Abstract
Photocoagulation has become the most useful conservative treatment for small retinoblastomas since Hopping and Meyer-Schwickerath reported 13 cases successfully treated by this technique. Xenon arc photocoagulation is the type most commonly employed and can be used as primary treatment in cases that were initially treated with irradiation or cryotherapy. Photocoagulation is the treatment of choice for small retinoblastomas (less than 8 mm) but is not indicated when there is vitreous seeding of the tumor. In the authors' practice, larger lesions have been treated with xenon arc photocoagulation and also some cases localized in the papillomacular area. Both direct and indirect techniques have always been used. The authors report their results obtained with xenon photocoagulation and discuss the characteristic regression patterns.
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