Accommodation and age-dependent eye model based on in vivo measurements
Conclusions The proposed eye model is able to predict changes in objective refraction and accommodation response. It has the potential to be a useful design and testing tool for devices (e.g. intraocular lenses or contact lenses) designed to correct the eye's optical errors. (Source: Journal of Optometry)
Source: Journal of Optometry - March 22, 2018 Category: Opthalmology Source Type: research
Refractive error magnitude and variability: Relation to age
Conclusions Mean ocular refraction and refractive error distribution vary with age. The highest magnitude of myopia is found in young adults. Similar to prevalence, the severity of myopia also appears to have increased since 1931. (Source: Journal of Optometry)
Source: Journal of Optometry - March 20, 2018 Category: Opthalmology Source Type: research
Comparison of contrast sensitivity in β-thalassemia patients treated by deferoxamine or deferasirox
Conclusions CS tests can detect visual disturbance in thalassemic patients before the impairment of visual acuity. It is suggested that CS tests be included in their regular eye examination. (Source: Journal of Optometry)
Source: Journal of Optometry - March 10, 2018 Category: Opthalmology Source Type: research
Validation of refraction and anterior segment parameters by a new multi-diagnostic platform (VX120)
Conclusions The VX120 provides consistent refraction and most anterior segment measurements in normal healthy eyes, with high levels of intra and inter-session repeatability. (Source: Journal of Optometry)
Source: Journal of Optometry - March 9, 2018 Category: Opthalmology Source Type: research
Tear instability importance, mechanisms, validity and reliability of assessment
Conclusions Fluorescein tear break up time assessments cannot be standardised and less-invasive methods are not yet standardised. Objective less-invasive and subjective fluorescein break up time tests do not appear to be measuring the same tear phenomena although both should be performed before other invasive procedures. (Source: Journal of Optometry)
Source: Journal of Optometry - January 14, 2018 Category: Opthalmology Source Type: research
Symmetry of peripheral retinal nonperfusion in diabetic retinopathy by ischemic index
Conclusion Asymmetrical retinopathy in diabetic patients is uncommon and additional pathological processes should be considered in the presence of asymmetric DR. (Source: Journal of Optometry)
Source: Journal of Optometry - January 14, 2018 Category: Opthalmology Source Type: research
Scientific information overload in vision: What is behind?
Publication date: January–March 2018 Source:Journal of Optometry, Volume 11, Issue 1 Author(s): David P. Piñero (Source: Journal of Optometry)
Source: Journal of Optometry - January 2, 2018 Category: Opthalmology Source Type: research
The effect of spherical aberration on visual performance and refractive state for stimuli and tasks typical of night viewing
Conclusion Ocular SA can be a significant contributor to changes in refractive state when viewing high-contrast point sources typically encountered in nighttime environments. (Source: Journal of Optometry)
Source: Journal of Optometry - December 30, 2017 Category: Opthalmology Source Type: research
Reply to: Central corneal thickness measurement with Cirrus HD-OCT and Topcon SP-3000P
Publication date: Available online 26 December 2017 Source:Journal of Optometry Author(s): Jorge A. Calvo-Sanz (Source: Journal of Optometry)
Source: Journal of Optometry - December 27, 2017 Category: Opthalmology Source Type: research
Reply to comment by De Bernardo and Rosa on “Evaluation of Goldmann applanation tonometry, rebound tonometry and dynamic contour tonometry in keratoconus”
Publication date: Available online 15 December 2017 Source:Journal of Optometry Author(s): Fatih Özcura, Nilgün Yıldırım (Source: Journal of Optometry)
Source: Journal of Optometry - December 15, 2017 Category: Opthalmology Source Type: research
Central corneal thickness measurement with Cirrus HD-OCT and Topcon SP-3000P
Publication date: Available online 14 December 2017 Source:Journal of Optometry Author(s): Maddalena De Bernardo, Francesco Antonio Salzano, Nicola Rosa (Source: Journal of Optometry)
Source: Journal of Optometry - December 14, 2017 Category: Opthalmology Source Type: research
Measuring the heterophoria: Agreement between two methods in non-presbyopic and presbyopic patients
Conclusion Cover test and von Graefe methods have a high level of agreement for both distance and near vision when considering presbyopic subjects. For non-presbyopic patients, the level of agreement is very low. Both methods for measuring heterophoria can only be considered interchangeable for presbyopic patients. For clinical purposes, this implies that any method can be used for measuring heterophoria in presbyopic patients. (Source: Journal of Optometry)
Source: Journal of Optometry - December 2, 2017 Category: Opthalmology Source Type: research
Visual outcomes and management after corneal refractive surgery: A review
Publication date: Available online 26 November 2017 Source:Journal of Optometry Author(s): Ane Murueta-Goyena, Pilar Cañadas Corneal refractive surgery procedures are widely performed to permanently correct refractive errors. Overall, refractive surgeries are safe, predictable and present high rates of satisfaction. Nevertheless, the induced epithelial, stromal and nerve damage alters corneal integrity and function, triggering a regenerative response. Complications that arise from corneal wound healing process might directly impact on visual outcomes of keratorefractive procedures. Most of these complications can be p...
Source: Journal of Optometry - November 27, 2017 Category: Opthalmology Source Type: research
Visual and binocular status in elementary school children with a reading problem
Conclusion Findings indicate that some children with an identified reading problem also present with abnormal binocular test results compared to published normal values. Further investigation should be performed to investigate the relationship between binocular vision function and reading performance. (Source: Journal of Optometry)
Source: Journal of Optometry - November 24, 2017 Category: Opthalmology Source Type: research
Visual outcome of penetrating keratoplasty, deep anterior lamellar keratoplasty and Descemet membrane endothelial keratoplasty
Conclusion Overall, DMEK proved superior over PK and DALK in terms of quality of vision, with PK offering slightly better outcomes than DALK in most visual function parameters under evaluation. (Source: Journal of Optometry)
Source: Journal of Optometry - November 13, 2017 Category: Opthalmology Source Type: research
