Shakila Abbas, Rabia Saeed, Iqra Iqbal, Syed Barkat Islam, Nimra Gul, Ayesha Kiran, Sadaf Qayyum.
Assessment of Stereopsis with and without Spectacles in patients with Keratoconus.
Al-Shifa J Ophthalmol Jan ;16(2):57-62.

Purpose: The purpose of this study was to assess and compare the stereopsis in keratoconus subjects with and without glasses and to compare the stereoacuity in different levels of keratoconus. Methods: A Descriptive cross-sectional study was conducted from August 2018 to May 2019 in the Ophthalmology department, Madinah Teaching Hospital, Faisalabad. A total of 30 subjects from both genders with ages ranging between 12-25 years were included through a non-probability purposive sampling technique. Corneal topography was performed for diagnosis of keratoconus. Stereopsis was tested by TNO chart both with and without glasses. The test was performed after taking complete ocular, medical, surgical and drug history. The Stereopsis test was applied binocularly. Data were analyzed by using paired sampling T-test and chi-square in SPSS 20 software. Results: Stereopsis was found significantly reduced in cases with severe keratoconus (P<0.05). When Paired sample t-test was applied the result was found to be non-significant (P>0.05) for the comparison with and without their glasses. Conclusion: There was no significant difference between the results of stereopsis in keratoconus both with and without glasses. The stereopsis gets reduced in keratoconus both with and without glasses. However, stereopsis was found more reduced in severe type of keratoconus as compared to mild and moderate type.

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