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The authors reviewed three-year follow-up results of transscleral contact of the pars plana cyclophotocoagulation of the pars plana to treat neovascular glaucoma (NVG) in 78 eyes of 75 patients. Photocoagulation was performed with an Nd:YAG laser set to deliver burns over 360° with a power of 5 watts for one second. A total of 30-40 burns was applied 3-4 mm behind the limbus of 28 eyes and 70-80 burns were similarly applied in two lines in 50 eyes. After treatment, intraocular pressure (IOP) was kept in the range between 4 and 21 mmHg in 67.9% of eyes, including those treated with topical drops or other means to reduce IOP. However, visual acuity deteriorated in 76.9% of eyes. Phthisis bulbi, the most severe complication, occurred in 12 (15.4%) of the 78 eyes. The prognosis for IOP and visual acuity correlated with pretreatment IOP and visual acuity; a pretreatment IOP of more than 41 mmHg and pretreatment visual acuity of 0.01 or worse were poor prognostic factors. Phthisis bulbi was more frequent in the group with higher pretreatment IOP or poorer visual acuity and also in those who underwent a larger number of photocoagulation burns. The authors recommend avoiding excessive cyclophotocoagulation to control intraocular hypertension due to NVG.LA: Japanese
Dr. O. Yasui, Department of Ophthalmology, Nagoya National Hospital, 4-1-1 Sannomaru, Naka-ku, Nagoya 460-0001, Japan
9.4.5.1 Neovascular glaucoma (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.5 Glaucomas associated with disorders of the retina, choroid and vitreous)
12.10 Cyclodestruction (Part of: 12 Surgical treatment)