Trabeculotomy in late onset congenital glaucoma.

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Abstract
All eyes of children above the age of 1 year referred because of glaucoma were treated with trabeculotomy as the primary procedure. The surgery was modified by the excision of a rectangle of tissue in the deep scleral bed under the scleral flap instead of the classical radial incision. This serves to exteriorise Schlemm's canal while thinning the scleral tissue, without, however, entering the anterior chamber. A total of 7 eyes in 5 children between the ages of 1 and 9 years were operated upon. In 6 of the 7 eyes intraocular pressure has remained under 20 mmHg without treatment after follow-up of between 18 months and 4 years. In the seventh eye intraocular pressure was controlled for 2 years but has since required epinephrine drops twice daily for the maintenance of pressure below 20 mmHg. In 4 of the 7 eyes flat, diffuse conjunctival filtering blebs are present, but no complications have been encountered. We consider that trabeculotomy may be recommended for children with late-onset congenital glaucoma.