Clinical and Experimental OptometryThis is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

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Progressive addition lens design and the short of statureEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - November 13, 2009 Category: Opthalmology Authors: Santos Shan-Yu Tseng, James I-Chih Chan Source Type: journals

Correction of astigmatism after penetrating keratoplasty using the Acri.Comfort toric intraocular lensEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - November 12, 2009 Category: Opthalmology Authors: Michael Statham, Andrew Apel, David Stephensen Source Type: journals

Juxtapapillary choroidal neovascular membrane following optic neuritisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - November 5, 2009 Category: Opthalmology Authors: Eva Duchnowski, Julie A Rodman Source Type: journals

The Orinda Study: should the 'modified clinical technique' retain its 'gold standard' status as a vision screening tool?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - November 4, 2009 Category: Opthalmology Authors: Merri Paech Source Type: journals

Advice for medical students and practitioners with colour vision deficiency: a website resourceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - October 28, 2009 Category: Opthalmology Authors: J Anthony B Spalding, Barry L Cole, Fraz A Mir Source Type: journals

Bacteriology of external ocular infections in Aba, South Eastern NigeriaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: The study recommends that quinolones be available as ophthalmic preparations to be prescribed by the qualified practitioners to avoid development of resistance from indiscriminate use. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - September 22, 2009 Category: Opthalmology Authors: Udo Ahanna Ubani Source Type: journals

Influenza A(H1N1) and infection control guidelines for optometristsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The emergence of a novel influenza A virus (Influenza A[H1N1]), which has not circulated previously in humans, has led to the first global influenza pandemic in 41 years. Influenza A(H1N1), commonly called 'swine flu', is a novel influenza virus made up of porcine, avian and human genes, and preferentially infects younger people. Although Influenza A(H1N1) does not appear to be likely to cause as many fatalities as previous influenza pandemics, attempts to contain it are necessary because people whose health is already compromised through underlying chronic medical conditions are at risk of death if they contract the virus...
Source: Clinical and Experimental Optometry - September 14, 2009 Category: Opthalmology Authors: Patricia M Kiely, Ka-Yee Lian, Genevieve Napper, Carol Lakkis Source Type: journals

Effect of cycloplegia on axial length and anterior chamber depth measurements in childrenEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Effects of cycloplegia on axial length measurement in children made with IOLMaster and Sonomed A-5500 were insignificant. In contrast, ACD measurement was significantly affected by cycloplegia and different instruments. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - August 31, 2009 Category: Opthalmology Authors: Sin Wan Cheung, Rufina Chan, Roy CS Cheng, Pauline Cho Source Type: journals

Bilateral manifestation of severe anterior capsule contraction syndrome after implantation of a preloaded intraocular lensEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - August 24, 2009 Category: Opthalmology Authors: Ioannis T Tsinopoulos, Konstantinos T Tsaousis, Chrysanthos Symeonidis, Stavros A Dimitrakos Source Type: journals

Management of a silicone sponge explant eroding through the scleral wallEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - August 23, 2009 Category: Opthalmology Authors: Steve Yu-Wen Liang, Lawrence Reginald Lee Source Type: journals

Astigmatic shift and conjunctival epithelial ingrowths following late-onset iatrogenic LASIK flap dehiscence during scleral buckling surgeryEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - August 23, 2009 Category: Opthalmology Authors: Quan Liu, Chi Ho To, Jian Ge, Chu Yan Chan, Lin Lv, Thomas Chuen Lam, Andrew W Siu Source Type: journals

Biomechanical properties of the cornea measured by the Ocular Response Analyzer and their association with intraocular pressure and the central corneal curvatureEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: The results of this study indicate that there is no correlation between the parameters measured with the Ocular Response Analyzer and central corneal radius of curvature. Some of the biomechanical properties of the cornea studied were found to differ in the normal eyes compared to the post-LASIK eyes. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - August 19, 2009 Category: Opthalmology Authors: Sandra Franco, Madalena Lira Source Type: journals

Comparison of horizontal corneal diameter measurements using Galilei, EyeSys and Orbscan II systemsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: These results suggest that measurements made with the Orbscan II are smaller than those obtained with the EyeSys Corneal Analysis system and the Galilei. Among the three devices, the Galilei and the Orbscan II showed the best agreement, however, it is inadvisable to use the three devices interchangeably in every clinical situation. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - July 21, 2009 Category: Opthalmology Authors: Ramin Salouti, Mohammad H Nowroozzadeh, Mohammad Zamani, Maryam Ghoreyshi, Rosa Salouti Source Type: journals

Overnight corneal reshaping for the correction of childhood myopia: a single case studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - July 14, 2009 Category: Opthalmology Authors: Laura E Downie, Russell Lowe Source Type: journals

Secondary pseudotumour cerebri in a patient undergoing sexual reassignment therapyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 24, 2009 Category: Opthalmology Authors: Ashley D Mowl, Jane Ann Grogg, Judith Klein Source Type: journals

Anaphylaxis with use of eye-drops containing benzalkonium chloride preservativeEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 21, 2009 Category: Opthalmology Authors: Diana Anderson, Bela Faltay, Nairmeen A Haller Source Type: journals

Keratometric alterations following the 25-gauge transconjunctival sutureless pars plana vitrectomy versus the conventional pars plana vitrectomyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Both 25-gauge transconjunctival sutureless and conventional pars plana vitrectomy are effective surgical modalities for selected diseases of the posterior segment. Surgical procedures are critical for the visual rehabilitation of the patients. The post-operative corneal astigmatism of the vitrectomised eyes can be accurately determined at least two months post-operatively (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 21, 2009 Category: Opthalmology Authors: Mehmet Citirik, Cosar Batman, Tolga Bicer, Orhan Zilelioglu Source Type: journals

Refraction, intraocular pressure and anterior chamber depth changes after Nd:YAG laser treatment for posterior capsular opacification in pseudophakic eyesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Nd:YAG laser capsulotomy is an effective and safe method of treatment of posterior capsular opacification. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 21, 2009 Category: Opthalmology Authors: Yelda Buyru Ozkurt, Tomris Sengör, Tufan Evciman, Melih Haboğlu Source Type: journals

Macular haemorrhage after repetitive roller coaster ridingEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 21, 2009 Category: Opthalmology Authors: Baharak Asefzadeh, Nyssa Connell Source Type: journals

Chromaticity co-ordinates of Ishihara plates reveal that hidden digit plates can be read by S-conesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Normal trichromats read Ishihara plates using their chromatic discrimination ability along the L/(L + M) axis. Red-green colour vision defective observers rely on S-cones in reading the plates. Some normal trichromats can read the hidden digit plates because they can extract S-cone differences efficiently despite the distraction from the L/(L + M) axis. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 21, 2009 Category: Opthalmology Authors: Eriko Miyahara Source Type: journals

The effect of the first application of verteporfin photodynamic therapy on lesion growth in choroidal neovascularisation and its potential impact on combination therapyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: Our study demonstrates that following the first application of VPDT, smaller lesions enlarge disproportionately more than larger lesions. As we have entered into the era of using angiostatic agents in combination with VPDT, it may be important to evaluate this effect with regards to the timing of VPDT commencement. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 21, 2009 Category: Opthalmology Authors: Muhammad Amer Awan, Randhir Chavan, Khaik K Peh, Yit C Yang Source Type: journals

Optometrists Association Australia Universal (entry-level) and Therapeutic Competency Standards for Optometry 2008Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Discussion: Competency standards are used by Australian and New Zealand registration authorities for the purposes of registration and therapeutic endorsement of registration via the Optometry Council of Australia and New Zealand accreditation and assessment processes. They have also been used as the basis of the World Council of Optometry Global Competency-Based Model. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 17, 2009 Category: Opthalmology Authors: Patricia M Kiely Source Type: journals

Posterior subcapsular opacity in two patients with thalassaemia major following deferiprone consumptionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 11, 2009 Category: Opthalmology Authors: Morteza Mehdizadeh, Mohammad Hosein Nowroozzadeh Source Type: journals

Colour blindness does not preclude fame as an artist: celebrated Australian artist Clifton Pugh was a protanopeEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: A severe colour vision deficiency does not preclude success as a painter. It is a handicap but there are strategies artists can use to overcome it. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - June 10, 2009 Category: Opthalmology Authors: Barry L Cole, Ross W Harris Source Type: journals

Traumatic interface oedema two years after LASIKEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - April 21, 2009 Category: Opthalmology Authors: Sunil Kumar Source Type: journals

A medical device/drug delivery system for treatment of glaucomaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Drugs commonly used for glaucoma treatment can be passively transferred to a hydrogel contact lens and then eluted from the polymer. Data obtained from a limited number of patients suggest that this contact lens/drug delivery system may be a feasible means of controlling IOP. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - April 9, 2009 Category: Opthalmology Authors: Clyde L Schultz, Timothy R Poling, Janet O Mint Source Type: journals

Statistical generation of normal and post-refractive surgery wavefrontsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: The matrix techniques illustrated here can be used to generate wavefronts that are consistent with various populations of interest to the ophthalmic community. Generation of wavefronts enables techniques such as Monte Carlo simulations to be performed that aid in the development of ophthalmic instrumentation and visual performance metrics. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - April 2, 2009 Category: Opthalmology Authors: Jim Schwiegerling Source Type: journals

Evaluation of optical quality in white light from wavefront aberrations for a myopic population of human eyesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: The fourth-order and spherical aberrations have a greater effect on vision than other order aberrations. The impact of monochromatic aberrations on optical quality is greater than that of chromatic aberrations. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - April 1, 2009 Category: Opthalmology Authors: Lihua Fang, Yan Wang, Xingdao He Source Type: journals

The effect of soft contact lens wear and time from blink on wavefront aberration measurement variationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: Variability in measurements of aberrations increased significantly for odd-order aberrations when a contact lens was worn or between blinks. Fourth-order aberrations showed less effect of contact lens wear. Therefore, verification of the performance of lenses with aspheric optics on eye is feasible. Accurate assessment of higher-order aberrations is more difficult when a contact lens is worn. Both contact lens wear and time from blink increase variability in aberrations, which suggests a role for the tear film in increased aberrations with soft contact lens wear. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - April 1, 2009 Category: Opthalmology Authors: Sheila M Rae, Holly C Price Source Type: journals

Controlled induction of spherical aberration with custom soft contact lensesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: Defined levels of SA can be manufactured and induced (non-invasively) with WFG soft contact lenses and their effect on logMAR high contrast visual performance can be measured. Results show that subjects' best logMAR HCVA occurs with the presence of positive residual SA. When designing the actual test lens, the targeted change in aberrations for each subject will likely be better achieved by first measuring the aberrations of a template lens on the eye and then compensating for unique subject dependent eye-lens interactions. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - April 1, 2009 Category: Opthalmology Authors: Katrina E Parker, Jason D Marsack, James D Elswick, Tyson J Brunstetter, Raymond A Applegate Source Type: journals

Comparison of two artificial tear formulations using aberrometryEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: This study shows artificial tears can have a measurable and significant impact on aberrations of healthy eyes. This effect is sustained for at least one minute and its magnitude appears to be related to the viscosity of the tear formulation. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 31, 2009 Category: Opthalmology Authors: Jeffrey S Berger, Kyle R Head, Thomas O Salmon Source Type: journals

Measuring ocular aberrations and image quality in peripheral vision with a clinical wavefront aberrometerEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Measurement of off-axis wavefront aberrations of a model eye over a restricted range of eccentricities is possible with the COAS clinical wavefront aberrometer and auxiliary lenses to correct astigmatism. When central image quality is good, the off-axis aberrations will have a powerful effect on peripheral image quality. When central image quality is poor, the additional effect of off-axis aberrations will be minor. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 31, 2009 Category: Opthalmology Authors: Jie Shen, Larry N Thibos Source Type: journals

Detecting significant change in wavefront error: How long does it take?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: The ability to detect change in HO WFE over a short period due to normal ageing is difficult but possible with current WFE measurement technology. Single measurements of HO WFE become less predictive of true HO WFE with increasing measurement variability. Multiple measurements reduce the variability. Even with proper fixation and instrument alignment, pupil centre location uncertainty in HO WFE measurements is a non-trivial contributor to measurement variability. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 29, 2009 Category: Opthalmology Authors: Darren E Koenig, Raymond A Applegate, Jason D Marsack, Edwin J Sarver, Lan Chi Nguyen Source Type: journals

The effect of topical cyclosporine A treatment on corneal thickness in patients with trachomatous dry eyeEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: In the present study, the CsA treatment group exhibited significantly greater increases in CT compared to controls. Such an increase may indicate an improvement in the integrity of the ocular surface and resolution of the underlying inflammation as a consequence of topical CsA treatment. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 29, 2009 Category: Opthalmology Authors: Mustafa Guzey, Ahmet Satici, Suleyman Korhan Karaman, Fikriye Ordulu, Sezgin Sezer Source Type: journals

The range of local wavefront curvatures measurable with Shack-Hartmann wavefront sensorsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Shack-Hartmann wavefront sensor systems are studied to assess the range of local wavefront curvatures that may be measured for a given choice of lenslet size and focal length and illumination beam characteristics, with special emphasis on systems design for use in wavefront eye refractors. Effects considered include blur effects on detected spot size, spot differential movement due to local wavefront curvature and source size effects. Examples are given, using a full diffractive treatment of the spot intensity patterns, to illustrate that the maximum range values found using the method of this paper result in neighbouring ...
Source: Clinical and Experimental Optometry - March 29, 2009 Category: Opthalmology Authors: Charles E Campbell Source Type: journals

Predicting visual performance from optical quality metrics in keratoconusEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: As in normal eyes, visual performance in keratoconus was predicable from optical quality; albeit by different metrics. Optical quality metrics predictive of visual performance in normal eyes, for example, visual Strehl, lack the dynamic range to represent visual performance in highly aberrated eyes with keratoconus. Optical quality outcomes for keratoconus could be reported using many different metrics, but pupil fraction metrics, for example PFWc, perform best for highly aberrated eyes. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 29, 2009 Category: Opthalmology Authors: Paul Schoneveld, Konrad Pesudovs, Douglas J Coster Source Type: journals

Toric orthokeratology: a case reportEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
(Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 26, 2009 Category: Opthalmology Authors: Ben Chan, Pauline Cho, Arjan de Vecht Source Type: journals

Repeatability of corneal and ocular aberration measurements and changes in aberrations over one weekEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: The variability found in all the measurements was small and not clinically significant and could be attributable to instrument noise, changes in the tear film and to small fixational eye movements. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 21, 2009 Category: Opthalmology Authors: Marco A Miranda, Clare O'Donnell, Hema Radhakrishnan Source Type: journals

Contralateral comparison of wavefront-guided LASIK surgery with iris recognition versus without iris recognition using the MEL80 Excimer laser systemEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: LASIK performed with iris recognition results in better VA, lower mean higher-order aberrations, lower refractive post-operative angles of error and better contrast sensitivity at three months post-operatively than LASIK performed without iris recognition. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 19, 2009 Category: Opthalmology Authors: Fang Wu, Yabo Yang, Paul J Dougherty Source Type: journals

Describing ocular aberrations with wavefront vergence mapsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A common optometric problem is to specify the eye's ocular aberrations in terms of Zernike coefficients and to reduce that specification to a prescription for the optimum sphero-cylindrical correcting lens. The typical approach is first to reconstruct wavefront phase errors from measurements of wavefront slopes obtained by a wavefront aberrometer. This paper applies a new method to this clinical problem that does not require wavefront reconstruction. Instead, we base our analysis of axial wavefront vergence as inferred directly from wavefront slopes. The result is a wavefront vergence map that is similar to the axial power...
Source: Clinical and Experimental Optometry - March 19, 2009 Category: Opthalmology Authors: Jayoung Nam, Larry N Thibos, D Robert Iskander Source Type: journals

Normality of colour vision in a compound heterozygous female carrying protan and deutan defectsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Apart from Schmidt's sign, we found the colour vision of the compound heterozygote to be indistinguishable from that of a normal trichromat. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 17, 2009 Category: Opthalmology Authors: Diane M Tait, Joseph Carroll Source Type: journals

An evaluation of the Bausch & Lomb Zywave aberrometerEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: The Zywave provides valid and repeatable estimates of refractive error. We attribute the myopic shift for larger pupils to the eye's spherical aberration. The repeatability of the Zernike terms measured with the Zywave was acceptable for the second-order and spherical aberration terms but for other higher-order terms, the variation between sessions may exceed the variation between subjects indicating unacceptable repeatability. This may have important ramifications for wavefront-guided LASIK. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 17, 2009 Category: Opthalmology Authors: Michael J Dobos, Michael D Twa, Mark A Bullimore Source Type: journals

Role of ocular aberrations in dynamic accommodation controlEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Accommodation in humans appears to derive a cue from the even-order aberrations of the eye to help guide the initial direction of responses to reductions in stimulus vergence (that is, disaccommodation). With all aberrations and even-order aberrations inverted, the number of incorrect directional responses to outward moving stimuli increases, suggesting that aberrations are important in determining the initial path of stepwise accommodative responses. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - March 17, 2009 Category: Opthalmology Authors: Sem Sem Chin, Karen M Hampson, Edward A H Mallen Source Type: journals

New methods and techniques for sensing the wave aberrations of human eyesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
During the past decade, there has been a remarkable expansion of the application of wavefront-related technologies to the human eye. The ability to measure the wavefront aberrations (WA) of an individual eye has greatly improved our understanding on the optical properties of the human eye. The development of wavefront sensors has further generated an intensive effort to revise methods to correct vision. Wavefront sensors have offered the promise of a new generation of visual correction methods that can correct high order aberrations beyond defocus and astigmatism, that is, the wavefront-guided excimer laser platforms and a...
Source: Clinical and Experimental Optometry - February 24, 2009 Category: Opthalmology Authors: Marco Lombardo, Giuseppe Lombardo Source Type: journals

Pentacam posterior and anterior corneal aberrations in normal and keratoconic eyesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusions: With the Pentacam system, higher levels of vertical coma, primary coma and coma-like aberrations are present in keratoconic eyes compared to normal eyes. The values provided by this device for posterior corneal aberrations are erroneous. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - February 24, 2009 Category: Opthalmology Authors: David P Piñero, Jorge L Alió, Alicia Alesón, Munir Escaf, Mauricio Miranda Source Type: journals

Dynamic wavefront aberrations and visual acuity in normal and dry eyesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: Dynamic changes in wavefront aberrations and VA are highly individual dependent, while the dry eye tends to be less stable than the normal eye. The results suggest that tear-film fluctuation might play a role in determining dynamic wavefront aberration and VA, however, contributions from other factors should not be overlooked. For dry eye, dynamic change in VA depends on blink rate. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - February 18, 2009 Category: Opthalmology Authors: Yan Wang, Jianjiang Xu, Xinghuai Sun, Renyuan Chu, Hong Zhuang, Ji C He Source Type: journals

Effect of spectacle and contact lenses on the effective corneal refractive zoneEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The effective corneal refractive zone is that portion of the cornea traversed by the light that enters the pupil of the eye from object points at a specified angle from the line of sight. It is of relevance in corneal surgery and for understanding the effect of corneal opacities and lesions on vision. Gaussian optics is used in this paper to obtain explicit equations for the geometry of the effective corneal refractive zone for a simplified eye, when spectacle and contact lenses are worn. The theory shows that lenses of positive power increase the diameter of the effective corneal refractive zone and lenses of negative pow...
Source: Clinical and Experimental Optometry - December 12, 2008 Category: Opthalmology Authors: William F Harris Source Type: journals

Post-capsulotomy dysphotopsia in monofocal versus multifocal lensesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: The posterior capsule is an important optical medium, which has not been fully considered in other comparative studies and its complete removal eliminates any confounding contribution. The results suggest that after capsulotomy, there is no significant difference in objective or subjective photic phenomena between monofocal and multifocal silicone lenses. Dysphotopic symptoms in patients with refractive multifocal IOLs were comparable to monofocal IOL patients after capsulotomy. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - December 3, 2008 Category: Opthalmology Authors: Richard Allen, Gregory O Ho-Yen, Adrian B Beckingsale, Fred W Fitzke, Andrea G Sciscio, George M Saleh Source Type: journals

Functional deficits in early stage age-related maculopathyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: The subjects with very early ARM showed significant loss of low spatial frequency static contrast sensitivity before the loss of high contrast VA, indicating that static contrast sensitivity may be one of the earliest functional losses in early ARM and this loss was found to extend across the central 10 degrees of the retina. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - November 12, 2008 Category: Opthalmology Authors: Feng Qiu, Susan J Leat Source Type: journals

Uncorrected refractive error in the northern and eastern provinces of Sri LankaEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion: The high proportion of people who had not previously had an eye examination, particularly those with significant uncorrected refractive error, provides evidence for the acute need for further development and support of community-level eye-care services in the regions visited. Women and older people should be targeted by future programs to achieve equity of blindness prevention. (Source: Clinical and Experimental Optometry)
Source: Clinical and Experimental Optometry - October 31, 2008 Category: Opthalmology Authors: Nina Tahhan, Timothy R Fricke, Thomas Naduvilath, Jane Kierath, Suit May Ho, Gerhard Schlenther, Brian Layland, Brien Holden Source Type: journals