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C. Pacheco Del Valle, R. Velasco, A. Babayan, O. Baca; Anterior Chamber Depth and Angle Assessment by Optical Coherence Tomography (OCT Visante®) After Penetrating Keratoplasty. Invest. Ophthalmol. Vis. Sci. 2008;49(13):1954. doi: https://doi.org/.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the anterior chamber structural changes after penetrating keratoplasty with the OCT Visante ®.
This is a prospective and descriptive study, in which we included patients with penetrating keratoplasty of different etiologies. We evaluated clinical changes of the anterior chamber with the OCT Visante ® Carl Zeiss Meditec Inc Mod. 1000; 1300 nm, Dublin Ca. USA. We mesure each nylon sutura with Vernier's caliper, all eyes were discontinues suture. Sixteen images per case were performed. The anterior chamber (2.5 ml or more considered wide and 2.4 or less were considered narrow) and angle were evaluated (acordding to Shaffer degree 4: 35 -45°; degree 3: 25-35°; degree 2: 20° and degree 1: 10°. Angle and anterior chamber were measured and compare with leght suture.Three groups were made: Group I: donor and receptor with the sanme corneal diameter; Group II: Different (0.25 mm.) corneal donor and receptor diameter; Group III: Triple corneal procedure. Results were analyzed by student t with Microsoft Excel®.
We included 15 eyes of 15 patients. Nine eyes in group I, three eyes in group II and three eyes in group III. The age average was 32.58 years old. Penetrating keratoplasty indications were: 60% keratoconus, 20% interstitial keratitis and 20% were other etiologies. The angle for three group were 37.39 (degree 4); 34.35º(degree 3) and 33.72º (degree 3) for each group. We found that the anterior chamber depth were 2.81ml (wide); 2.62ml (wide) and 2.41ml (narrow) respectively. Comparing suture an angle t = 2.20 p>0.05 and suture and anterior chamber t = 2.17 p>0.05.
The Optical Coherence Tomography (OCT Visante®) is a useful tool to evaluate anatomic details and specific measures in anterior chamber structures.
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