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https://ptsldigital.ukm.my/jspui/handle/123456789/460456| Title: | Peripheral refraction profile among Chinese school children in Kuala Lumpur |
| Authors: | Uma Mageswari Batumalai (P55576) |
| Supervisor: | Sharanjeet Kaur, Professor Dr. |
| Keywords: | Peripheral refraction Retinal periphery Children Dissertations, Academic -- Malaysia |
| Issue Date: | 6-Apr-2016 |
| Description: | Peripheral refraction can assess the amount of refractive error or defocus in the retinal periphery. This study describes the baseline data of peripheral refraction among Chinese schoolchildren in Kuala Lumpur. A total of 130 Chinese schoolchildren aged between 7 to 12 years were recruited. Peripheral refraction was conducted under cycloplegic condition using the Grand Seiko WR5100-k. An eye rotation method to view eccentric target was used. The mean age of the subjects was 9.46±1.59 years. Peripheral refraction measurements were converted into vector components for analysis: M being spherical equivalent, J45 being 45°-135° astigmatism and J180 being 90°-180° astigmatism. The M component and Relative Peripheral Refractive Error (RPRE) for moderate and low myopes exhibited a hyperopic defocus; emmetropes showed a flat to slightly myopic profile and low hyperopes had a myopic shift at both eccentricities. The J45 astigmatic component had a linear distribution with a mean slope rate of 0.004D/degree. The J180 astigmatic component showed increasing negative values at both eccentricities. Within each refractive group, the J45 and J180 showed significant difference between the centre and periphery but for the M component, a significant difference was not found for the emmetropes only. A comparison between refractive groups showed a significant difference in M component at all eccentricities. However, the J45 and J180 component showed no significant difference. A symmetrical pattern was observed for M component for all refractive groups except for low hyperopes at 30° eccentricity. Both J45 and J180 component exhibited asymmetry in all refractive groups. The box model fitted best for the myopes whereas the linear model for the hyperopes and emmetropes. Our study was able to provide a baseline peripheral profile pattern across the horizontal meridian among Chinese schoolchildren in Kuala Lumpur.,Ijazah Sarjana Sains Kesihatan (Optometri) |
| Pages: | 138 |
| Call Number: | WW310.U48p 2016 9 |
| Publisher: | UKM, Kuala Lumpur |
| Appears in Collections: | Faculty of Health Sciences / Fakulti Sains Kesihatan |
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|---|---|---|---|---|
| ukmvital_97260+Source01+Source010.PDF Restricted Access | 327.3 kB | Adobe PDF |  View/Open |
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