Corneal Topographic Study Using Orbscan II between Keratoconus and Keratoconus Suspect.
10.3341/jkos.2007.48.12.1599
- Author:
Seung Uk LEE
1
;
Chang Hwan LEE
;
Ji Eun LEE
;
Jong Soo LEE
Author Information
1. Department of Ophthalmology, College of Medicine, Pusan National University, Pusan, Korea. jongsool@pusan.ac.kr
- Publication Type:Original Article
- Keywords:
Anterior chamber depth;
Best fit sphere (BFS);
Keratoconus;
Keratoconus suspect;
Orbscan II corneal topography
- MeSH:
Anterior Chamber;
Corneal Topography;
Keratoconus*;
Pupil
- From:Journal of the Korean Ophthalmological Society
2007;48(12):1599-1606
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To compare corneal topographic changes using Orbscn II between keratoconus and keratoconus- suspected eyes. METHODS: Thirty-seven keratoconus eyes, 17 keratoconus-suspected eyes and 37 normal eyes were evaluated by using Orbscan II corneal topography. We compared central phachymetry, anterior elevation from best-fit sphere (BFS), posterior elevation from BFS, most protruded corneal thickness, central corneal thickness, anterior chamber depth, corneal diameter, and pupil size. RESULTS: Central pachymetry, anterior and posterior elevation from BFS, central corneal thickness, and anterior chamber depth were statistically significantly different between keratoconus and control eyes. Anterior elevation from BFS showed a significant difference between keratoconus-suspected and control eyes. There were statistically significant differences in central pachymetry, posterior elevation from BFS, central corneal thickness and most protruded corneal thickness between keratoconus and keratoconus-suspected eyes. Corneal diameter and pupil size showed no differences among the 3 groups. CONCLUSIONS: Suspected keratoconus eyes have a higher value of anterior elevation from BFS on Orbscan II topography as compared with control eyes. Central pachymetry, posterior elevation from BFS, central corneal thickness and most protruded corneal thickness may be helpful in distinguishing between keratoconus and keratoconus-suspected eyes.
