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OBJECTIVE: To evaluate the use of the nerve fiber laser analyzer (GDx) in optic disc drusen patients. LOCATION: Hospital de Olhos de Pernambuco and Fundacao Altino Ventura (Recife, Pernambuco). METHODS: Twenty eyes were evaluated (ten patients and seven females) with a clinical diagnosis of optic disc drusen, and were submitted to complete ophthalmological examination and to nerve fiber laser analyzer. The sample was divided into two groups according to the anatomical localization of the drusen: groups 1 (superficial ones) and 2 (deep). RESULTS: Twelve eyes (60.0%) belonged to group 1 and eight (40.0%) to group 2. There was no meaningful difference between the groups when visual acuity and ocular pressure were compared (p = 0.90 and 0.22, respectively). Of 12 parameters evaluated by GDx, ten (83.3%) showed a statistically meaningful difference when the two groups were compared, demonstrating major involvement of the nerve fiber layer in group 1 patients. CONCLUSIONS: Analysis of optic disc patients using the GDx suggest a larger reduction of the nerve fiber layer in the superficial drusen cases compared to deep ones. The authors emphasize the possibility of using this examination in patients affected by this disease.LA: Portuguese
Dr. A.C.A. Cavalcanti, Fundacao Altino Ventura, Rua da Soledade, 170 - Boa Vista, Recife - PE - CEP: 50070-040, Brazil. fundacao@hope.com.br
2.13 Retina and retinal nerve fibre layer (Part of: 2 Anatomical structures in glaucoma)
6.9.1 Laser scanning (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis)