Changes in mean corneal keratometry readings after pterygium excision surgery

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Nipaporn Maneerat


Background: Pterygium affects corneal curvature and consequently could affect intraocular lens calculation.

Objective: To study the effect of changes in average curvature of the central cornea after pterygium excision.

Materials and methods: This study is a descriptive analysis. Review of the history of patients with primary pterygium treated by the same ophthalmologist in the Department of Ophthalmology, Chaophraya Abhaibhubejhr Hospital was carried out from July 2014 to January 2018. All patients had preoperative and postoperative corneal keratometry readings (Canon RK-5).

Results: Forty-eight patients with pterygium were included in the study. The mean age of the 21 men and 27 women in the study was 58.2 years. The mean horizontal pterygium length was 2-8 millimeters. The mean corneal keratometry readings after pterygium surgery were significant from 43.51 diopters to 44.74 diopters and 44.38 diopters at 2 weeks and 3 months, respectively (Friedman Test, p < 0.001)

Conclusion: The postoperative mean corneal keratometry readings were significantly different compared to preoperative values.


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นิพนธ์ต้นฉบับ (Original article)


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