Sunanda Sarkhel*, Md Masihuzzaman, Vishal Biswas and Roshni Majumder

Department of Optometry and Vision Science, Amity University, Haryana, India

*Corresponding Author: Sunanda Sarkhel, Department of Optometry and Vision Science, Amity University, Haryana, India.

Received: July 20, 2023; Published: September 04, 2023

Abstract

Background: In the past, several investigations on myopia and the size of the optic disc were conducted. It has been proposed that the size of the optic disc varies with refractive error, growing larger with myopia and shrinking with hyperopia. Myopes have a probability of developing glaucomatous disc alterations, much as the population of myopia is growing in Asia's countries like India.

Purpose: The current study's goal was to assess the association between longer axial lengths, disc sizes, and disc volumes in the East Indian population's myopic population.

Methods: A cross-sectional study was performed in a Tertiary Eye Care centre. 276 eyes from 138 people between the ages of 18 and 40 were included, along with best corrected visual acuity of greater than 6/18, myopia (ranging from -0.25 to -8.00 DS), and astigmatism less than -3.00cyl. Subject with any cases with pathological myopia, retinal disease, or any eye surgery were excluded from the study. All subjects underwent for subjective refraction, slit-lamp examination, applanation tonometry, gonioscopy, A-scan ultrasonography, funduscopy, and color optic disk stereo photography, peripapillary RNFLT imaging were performed. Disk ovality was assessed using the ratio of minimum to maximum disk diameter (index of tilt). A ratio of ≥ 0.8 was considered as significant disk tilt.

Results: A total of 138 subjects were included. Among them 71 (51%) were female and 67 (49%) were male with mean age of 28.3 ± 6.99 years. The mean AXL was 23.90 ± 1.03 mm. In group-I, 167 eyes with refractive error ranging from (-0.25 to -1.00 Ds), followed by 62 eyes from Group-II with a refractive error ranging from (-1.25 to -3.75 Ds), 32 eyes from Group-III where the refractive error ranged from (-4.00 to -5.75 Ds), and lastly 15 eyes from Group-IV with refractive error ranged from (-6.00 to -8.00 Ds) respectively. It was found that with the increase in myopic error there was no significant increase in disc size and disc volume. Also, when eyes with AXL ranging from (22 -28 mm) were compared against disc area & disc volume, there was no significant glaucomatous changes noticed. The Pearson correlation test did not show any statistical significance. With mean axial length (AXL) 23.9 ± 1.03 mm, the results indicated that optic disc size is mostly independent of refractive error within the range of -0.25 to -8.00 D respectively.

Conclusion: The introduction of SD-OCT and IOL Master700, the relationship between longer axial length disc size and disc volume in the north Indian myopic population was shown to be insignificant.

Keywords: Scleral Buckling; Subretinal Fluid Drainage; Rhegmatogenous Retinal Detachment

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Citation

Citation: Sunanda Sarkhel., et al. “Distribution of Optic Disc Parameters and Association of Axial Length in East Indian Myopic Population: A Correlational Study".Acta Scientific Ophthalmology 6.10 (2023): 03-08.

Copyright

Copyright: © 2023 Sunanda Sarkhel., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.