Surgical Results of Trabeculotomy Ab Externo for Developmental Glaucoma

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Abstract
Objective: To elucidate long-term surgical outcome of trabeculotomy ab externo in the treatment of developmental glaucoma. Patients: Included in this retrospective study are 116 eyes of 71 patients with developmental glaucoma. We classified patients into three groups based on their age: congenital (33 eyes), existing before age 2 months; infantile (31 eyes), occurring from ages 2 months to 2 years; and juvenile (52 eyes), age 2 years or older. Results: A life-table analysis showed that the total success probabilities at 5 and 10 years with one or more trabeculotomy ab externo operations were, respectively, 92.5%±2.7% and 76.5%±6.2%. The success probability of patients with congenital glaucoma (60.3%±15.9%) was significantly lower than it was for those with infantile (96.3%±3.6%) or juvenile (76.4%±7.5) glaucoma (P<.01 for both). Conclusions: Surgical results of trabeculotomy ab externo remain effective for a long time. Congenital glaucoma has the worst prognosis, and infantile glaucoma has a better prognosis than does juvenile glaucoma.

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