Assessment of Preoperative and Postoperative Changes in Corneal Astigmatism after Pterygium Excision by Different Techniques

Corneal Astigmatism after Pterygium Excision

  • Madhavi Chevuturu Professor and HOD, Department of Ophthalmology, ESIC Medical College, Hyderabad, Telangana, India.
Keywords: Amniotic Membrane Graft, Conjunctival Autograft, Pterygium

Abstract

Background: Pterygium causes visual problems due to induced corneal astigmatism or direct encroachment onto the visual axis. The present study was conducted to compare preoperative and postoperative changes in corneal astigmatism after pterygium excision by different techniques. Subjects and Methods: The present study was conducted from May 2018 to August 20018 on 69 patients of age range 20-55 years of primary Pterygium. Patients were divided into three groups of 23 each. Group I was treated with bare sclera (BS) technique, Group II with conjunctival autograft (CAG) technique and Group III with amniotic membrane graft (AMG) technique. All the patients were preoperatively assessed for visual acuity, anterior and posterior segments, autorefraction, and autokeratometry. After surgery, the patients were recalled on day 5, 1 month, and 3 months for the analysis. Results: Uncorrected visual acuity (UCVA) preoperatively was 0.57, on the 5th day was 0.45 after 1 month was and after 3 months was 35. The mean preoperative astigmatism value in group I was 3.45, in group II was 3.52 and in group III was 3.49. Postoperative astigmatism value in group I was 1.60, in group II was 0.92 and in group III was 0.81. The difference was significant (P< 0.05). Conclusion: Authors found that amniotic membrane graft and a conjunctival autograft is better surgical techniques than bare sclera in reducing astigmatism.

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Published
2020-07-06
How to Cite
Chevuturu, M. (2020). Assessment of Preoperative and Postoperative Changes in Corneal Astigmatism after Pterygium Excision by Different Techniques. Asian Journal of Medical Research, 9(2), 1-4. Retrieved from http://aijournals.com/index.php/ajmr/article/view/1616
Section
Ophthalmology