Convergence insufficiency (CI) is a binocular anomaly associated with difficulty of the two eyes to converge during near vision. This study investigated the performance of binocular vision in subjects with CI. The performance of binocular vision that comprised of distant binocular visual acuity (VA), near binocular VA and stereoacuity of subjects with CI were compared with normals. Thirty subjects with CI of mean age 17.33 ±5.49 year-old and 30 normal subjects of mean age 18.77 ± 6.08 year-old with visual acuity of VA 6/6 or better, spherical refractive error of no more than ± 4.00 DS, astigmatism no more than 2.00 DC, non-strabismic and never had vision therapy, with good general and ocular health were recruited for the study. The monocular VA of the right eye, monocular VA of the left eye, binocular VA and stereoacuity of the two groups of subjects were measured and the data were compared. Results of the study showed significant differences in the distance binocular VA (t = 2.31, p < 0.05), near binocular VA (t = 0.89, p < 0.05) and stereoacuity (Z = -2.81, p < 0.01) between CI and normal subjects. The study concludes that subjects with CI experienced reduced performances distance binocular VA, near binocular VA and stereoacuity compared with normal subjects.

Background: IntraLASIK is a LASIK surgery that involved IntraLase femtosecond laser for the corneal flap creating. The objective of this research was to investigate and compare the changes in tear status at 1 and 3 months after undergoing conventional IntraLASIK with Bausch & Lomb PlanoScan (PS) algorithm, Bausch & Lomb Zyoptix Tissue Saving (ZTS) algorithm, and wavefrontguided (WG) IntraLASIK with VISX CustomVue. Methods: Tear status of 36 patients who were divided into 3 groups depending on the type of IntraLASIK they underwent (PS, n = 13; ZTS, n = 9; WG, n = 14) was evaluated. Tear status was determined by classifying the category of the thickness of pre-corneal tear lipid layer, non-invasive tear break-up time, and tear meniscus height. Repeated measures analysis of variance (ANOVA) and one way ANOVA were used for the statistical analyses. Results: The category of the thickness of tear lipid layer, non-invasive tear break up time and tear meniscus height were neither significantly changed after IntraLASIK for all groups nor showed significant difference among groups at 1 and 3 months post-IntraLASIK (P > 0.05). Blinking rate and palpebral aperture also had no significant changed after IntraLASIK. Conclusion: Both conventional (PS and ZTS) and WG IntraLASIK did not affect tear status up to 3 months post-IntraLASIK. WG IntraLASIK did not show superiority in preserving tear status 1 and 3 months post-surgery compared with conventional IntraLASIK.

An experimental investigation was conducted to explore visual reaction time and visual anticipation time between athletes and non-athletes. These visual perceptual skills form the base for cognitive processes required by the brain to respond instantaneously to a stimulus. A total of 228 adolescents, equally distributed between athletes and non-athletes, aged 13 to 16 years (mean age 14.69 ± 0.99 years) were examined. The visual reaction time and visual anticipation time were measured using a Lafayette Reaction Timer (Model 63035) and Bassin Anticipation Timer (Model 35575) respectively. The visual reaction time results revealed that athletes have faster reaction time scores as compared to non-athletes, whereas with visual anticipation time, athletes had fewer errors and a higher consistency compared to non-athletes. There was, however, no interaction between gender and sports participation noted for both these visual perceptual skills. These research findings indicate that gender was not an obstacle in sports participation, therefore not limiting the potential to excel in sports performance. Knowledge gained from these research findings will benefit the sports industry, specifically in athletic and sports training as well as provide a basis for the identification of an individual’s potential in their sports.
athletes ; non-athletes ; sports ; visual anticipation time ; visual reaction time

The lack of awareness about comprehensive eye examination amongst athletes could impact their eye health, hence it needs to be addressed. The authors hypothesize that a majority of athletes in Malaysia have never undergone a thorough eye examination. The present study aims to determine Malaysian athletes’ awareness of the importance of eye assessment. One hundred and twenty-one junior athletes, aged 13 to 16 years participated in the visual screening programme. A questionnaire consisting of fourteen dichotomous questions was developed in two languages, each being English and Malay language and administered prior to eye examination. The questionnaire was designed to measure self-reported visual function, ocular symptoms, and perceptions towards eye health. Questionnaire analysis showed 67.8% of participants never underwent any eye examination. A majority of participants, 66.9% and 75.2%, complained of visual and ocular symptoms respectively. The critical finding of this study showed that 57.9% of participants had reduced vision which could be visually corrected. Overall 90.9% of the participants agreed that eye examination was important. Almost none of the athletes owned any sports safety eyewear nor had undergone any visual training. The importance of wearing protective eyewear during sports needs to be given emphasis. This study implies that athletes' awareness of eye health, as well as visually related issues, is still at a very low level. Hence, the need for comprehensive eye examination and regular review among athletes’ needs to be emphasized. Athletes should also be educated on the importance of regular eye examinations from a young age.