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09.04.2016 | Original Paper | Ausgabe 1/2017

International Ophthalmology 1/2017

Diode laser cyclophotocoagulation in Indian eyes: efficacy and safety

Zeitschrift:
International Ophthalmology > Ausgabe 1/2017
Autoren:
Kirti Singh, Divya Jain, Vikas Veerwal

Abstract

Diode laser cyclophotocoagulation (DLCP) has emerged as a time-tested procedure for end-stage glaucoma with fewer complications. By means of this study, we have evaluated its wide indications, its efficacy, and safety in darkly pigmented Asian Indian eyes. Ninety-one eyes with uncontrolled glaucoma presenting to glaucoma clinic of a tertiary care center over a period of 6 years were scheduled for DLCP. The semiconductor diode laser with a G probe was used with laser energy delivered about 1.5 mm behind the surgical limbus. The extent of clock hours of laser application was determined by pretreatment intraocular pressure (IOP) and superior area was spared in cases where future filtration surgery was contemplated. The DLCP was repeated earliest at 1 month in case of non-response and a maximum of three laser procedures were performed for any patient. Ninety-one eyes of 89 patients (40 males, 49 females) were included. Common indications included secondary glaucoma (37.3 %), failed trabeculectomies (27.4 %), angle closure glaucoma (17.5 %), etc. Laser power delivered ranged from 990 to 1800 mW, (mean 1396 + 182.14 mW) with an average of 17 spots. Patients improved from pretreatment IOP of 38.18 + 8.96 mmHg (range 20.6–64) to post treatment IOP of 17.86 + 7.75 mmHg (range 10–42). Qualified success was defined as final IOP of 20 mm Hg or less on topical medications that could be achieved in 70 % eyes with one or repeat treatment. Pre op visual acuity ranged from PL+ to 6/18 showing a slight improvement to PL+ to 6/12 post op. A 58.5 % reduction of IOP was noted. No incidence of serious complications was noted during follow-up ranging from 9 months to 3 years. DLCP is an effective and safe tool to be used in Indian population for control of IOP. It can be safely used as a primary modality to bring IOP to permissible levels before trabeculectomy.

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