A Clinical Study to Assess Retinal Morphology In Various Grades Of Myopia Using Spectral Domain Optical Coherence Tomography
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2019, Vol 18, Issue 2
Abstract
Aims And Objectives: To evaluate retinal nerve fibre layer thickness and central foveal thickness in various degree of myopia during 2015to 2018. Methodology: A total of 200 eyes of myopic patients between age group of 18-40 years were selected and complete ophthalmic examination was done. Subjects were categorised into low (-.50D SE, <-3.00D); moderate (-3.00D SE≤ -.600D) and high(-6.00D SE<-8.00D) degree of myopia. Using SD-OCT the CFT and RNFL thickness were measured. Axial length measured using A-SCAN Biometry for every subject. Result: The CFT of high myopia 230±3.37µm (23 eyes) was greater than low 213.87±10.38µm (40 eyes) and moderate 219.64±4.2µm (37 eyes). The average RNFL thickness was (48.26±4.9)µm; (51.64±6.62)µm; (79.17±7.1)µm in high, moderate and low myopic group respectively. The average RNFL thickness was thin in highly and moderately myopic eyes as compared to low myopic. A significant linear correlation was found between SE and RNFL thickness. Conclusion: The CFT and RNFL thickness vary with refractive status and axial length of eye. Myopia can be a confounding factor in RNFL thickness attributed to its influence on RNFL thickness. Myopics with thin RNFL should be screened for glaucoma at regular interval. As early detection of such change in CFT helpful in understanding mechanism and factors affecting the structural changes of myopic eyes.
Authors and Affiliations
Dr. Jyoti Kanoje
Keywords
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- EP ID EP467652
- DOI 10.9790/0853-1802121625.
- Views 38
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