Clear-cornea trabeculectomy.

In most reported series of trabeculectomy results a failure rate of 10 to 15 per cent is quoted. It seems likely that some, perhaps the majority of these failures are due to conjunctival or tenon scarring. If a method of trabeculectomy could be devised so that the conjunctiva and tenon's capsule were not injured, the failure rate might be reduced. The clear-cornea approach has been developed with this in mind. The rational basis, the surgical method and results in a small number of cases will be described.