| Changes in the Corneal Curvature and Recurrence Rate following Pterygium Surgery with Relation to Pterygium Size and Morphology. |
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Seok Won Kang, Beom Jin Cho |
1Department of Ophthalmology, Gachon Medical School, Gil Medical Center, Inchon, Korea.
2Department of Ophthalmology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea. |
| 익상편의 크기 및 비후형태에 따른 익상편절제술 후의 각막만곡도변화와 재발률의 차이에 대한 비교 |
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조범진(Beom Jin Cho),강석원(Seok Won Kang) |
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| Abstract |
PURPOSE
We examined changes in the corneal curvature and recurrence rate following pterygium surgery with relation to pterygium size and morphology. METHODS: One hundred eyes with primary nasal pterygia were graded as atrophic(Group 1), intermediate (Group 2), or fleshy(Group 3) according to morphology and grouped as small area group or large area group according to an assessment of pterygium length from and along the limbus. Corneal curvature was measured with autokeratometer at 3 days, 1 week, 1 month, and 6months preoperatively and postopera-tively as well. Recurrence was evaluated at the same periods. RESULTS: Each group had no significant difference(p>0.05) to preoperative corneal curvature when pterygia were divided according to morphology. Large area group had significantly smaller corneal curvature than the preoperative one(p<0.05), but small area group didn't(p>0.05). The angle of astigmatism had the tendency of against-the-rule at 3 days postoperatively(163.3degrees), more strikingly in small area group(159.1degrees). The recurrence rate was 10% totally with no significant difference among each group(p>0.05). CONCLUSIONS: The magnitude of the corneal curvature following pterygium surgery was smaller than the preoperative one and the change of angle had the tendency of against-the-rule astigmatism. Surgically induced changes in the corneal curvature and recurrence rate related to morphology had no significant difference, but preoperative corneal curvature and postoperative changes were related to pterygium size. |
| Key Words:
Angle of astigmatism;Pterygium morphology;Pterygium size;Recurrence rate;Surgically |
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