Priyanka¹*, Sadaf Fatima², Savaira Sarwar², Malik Anjum Fayyaz², Manoj Johrani² and Rabia Akbar²

¹BS (Vision Sciences), M.Phil Optometry, Lecturer, ISRA School of Optometry, Al-Ibrahim Eye Hospital, Karachi, Pakistan
²BS (Vision Sciences), Internee Optometrist, Al-Ibrahim Eye Hospital, Karachi, Pakistan

*Corresponding Author: Priyanka, BS (Vision Sciences), M.Phil Optometry, Lecturer, ISRA School of Optometry, Al-Ibrahim Eye Hospital, Karachi, Pakistan.

Received: February 01, 2022; Published: February 28, 2022

Abstract

Introduction: Anisometropia is a condition in which the two eyes have unequal refractive power one eye may be markedly stronger than the other. Anisometropia affects our binocular vision. Individual with anisometropia typically see one eye larger image in one eye and one smaller image in the other eye.

Objective: To determine the effect of anisometropic correction on binocularity in Al-Ibrahim eye hospital, Malir Karachi.

Methods: A Cross Sectional Descriptive study was carried out in Al-Ibrahim eye hospital, Malir Karachi from July 2021 to December, 2021. Non-Probability Convenient sampling technique was used. This study involved 52 subjects who diagnosed with different types of Anisometropia of age range 10-30 years, of both genders. Demographic data, history of onset, visual acuity of every subject was checked and recorded separately both for near and distance, with and without glasses and with pin-hole, objective and subjective refraction were performed. Stereopsis was evaluated by Lang I, Lang II and Frisby test. Worth four dots test was also performed to evaluate the binocular single vision. SPSS version 20.0 was used to analyze the data.

Results: A total of 52 subjects were included in this study. Out of 52 subjects, 29 were males and 23 were females. Most of the subjects showed the degree of anisometropia of range (2.50 -3.00D). Astigmatism was most commonly presented in subjects among other refractive errors. Visual acuity was seen to be better after anisometropic correction showed significant result with p-value 0.000. There was slight change in stereo acuities with Lang I, Lang II and Frisby stereo acuity tests and all the subjects were indicated with normal fusional status by worth four dot test.

Conclusion: This study revealed that there was change in stereo acuities among all groups of degrees of anisometropia. There was no any association found between the age and degree of anisometropia on the Stereopsis and binocular single vision. Fusional status was normal showed the normal retinal correspondence.

Keywords: Anisometropia; Stereopsis; Lang I; Lang II; Frisby; Worth Four Dot Test

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Citation

Citation: Priyanka., et al. “Effect of Anisometropic Correction on Binocularity at Al-Ibrahim Eye Hospital, Karachi".Acta Scientific Ophthalmology 5.3 (2022): 60-64.

Copyright

Copyright: © 2022 Priyanka., 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.