Nonperforating glaucoma surgery, such as deep sclerectomy or viscocanalostomy, has been performed in infantile glaucoma as a primary and secondary intervention. The efficacy and surgical risks of this surgery are a matter of controversy. While some authors report good success rates of 75 % without essential surgical side effects, others emphasize the problems and risks of these procedures in refractory congenital glaucoma leading to a further thinning of the scleral envelope [36,53].
Nonperforating glaucoma surgery has been proposed as a safe and promising approach in episcleral venous pressure glaucoma (e.g., Sturge-Weber-Krabbe syndrome), as surgical risks are minimized and late goniopuncture can produce a late and "controlled" filtration .
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