Is to ever' Imre the effect of corneal trabeculectomy on corneal curvature
and to find out the degree of astigmatism induced by this technique.
Fifteen eyes of 9 patients with medically uncontrolled glaucoma and
which were determined to have corneal trabeculectomy were included.
Preoperatively, corneal topography was performed and the topographic
maps were analyzed regarding the overall and the central 3rnm corneal
curvature (power), the steepest and flattest meridia and delta k. Corneal
trabeculectomy was done and corneal topography was repeated 2 weeks
postoperatively. Topographic maps were compared to the preoperative
findings.
Corneal trabeculectomy results in marked steepening of the cornea at
the site of the corneal flap. However this effect is much less marked centrally.
Although corneal trabeculectomy entails the preparation of a partial
thickness corneal flap which is resutured to its bed by 4 sutures at the 4
corners. its effect on the corneal curvature within the central 3 mm zone is
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