Journal
CONTACT LENS & ANTERIOR EYE
Volume 38, Issue 4, Pages 277-282Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clae.2015.03.004
Keywords
Keratoconus; Anterior chamber angle; Visante (TM) OCT; Orbscan (TM) II; Apical protrusion
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Funding
- Alcon Foundation
- Bausch + Lomb
- Contamac
- CooperVision
- NEI [T35 EY07088]
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Purpose: To evaluate the anterior chamber angle in keratoconus eyes by use of the Visante (TM) OCT and Orbscan (TM) II. Methods: Anterior chamber angle was measured with the Visante (TM) OCT and Orbscan (TM) II in 52 subjects, 26 KC subjects and 26 age and control subjects. Results: When comparing the nasal and temporal angles obtained with the two techniques no correlation was found (R-2 always below 0.01) in either the control subjects or in the KC subjects. Despite this, there was an overall statistically significant difference in mean anterior chamber angles (p < 0.001) between Visante (TM) OCT and Orbscan (TM) II. There was no statistical difference (p > 0.05) between nasal and temporal anterior chamber angles when comparing controls and KC subjects with either of the two instruments. In general, the Visante (TM) OCT gave a smaller estimate of the anterior chamber angle. Conclusion: The values from the Visante (TM) OCT and Orbscan (TM) II cannot be interchanged since the difference in measurement of the anterior chamber angle was significantly different between the two instruments. (C) 2015 British Contact Lens Association. Published by Elsevier Ltd. All rights reserved.
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