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Abstract #8644 Published in IGR 5-1
Ocular biometry in occludable angles and angle closure glaucoma: a population based survey
George R; Paul PG; Baskaran M; Ramesh SV; Raju P; Arvind H; McCarty C; Vijaya LBritish Journal of Ophthalmology 2003; 87: 399-402
AIM: To compare ocular biometric values in a population based sample of eyes with occludable angles, angle closure glaucoma, and normal subjects. METHOD: Two thousand eight hundred and fifty subjects from a population based glaucoma prevalence study underwent complete ocular examination including indentation gonioscopy. Ocular biometry was performed in all subjects classified to have occludable angles (n = 143); angle closure glaucoma (n = 22), and a random subgroup of 419 normal subjects. Ocular biometry readings between the groups were compared and statistically analyzed using 't', 'z', and Mann-Whitney U tests. RESULTS: The mean age of subjects with occludable angles (54.43 (SD 9.53) years) and angle closure glaucoma (57.45 (8.5) years) was significantly higher (p< 0.001) than that of normal subjects (49.95 (9.95) years). Axial length was shorter (p < 0.001) in the occludable angle group (22.07 (0.69) mm) compared to the normal group (22.76 (0.78) mm). Anterior chamber depth (ACD) was shallower (p < 0.001) in subjects with occludable angles (2.53 (0.26) mm) than in normal subjects (3.00 (0.30) mm). Lens thickness (LT) was greater (p<0.001) in subjects with occludable angles (4.40 (0.53) mm) compared to normal subjects (4.31 (0.31) mm). No significant difference was noted in axial length, ACD (p = 0.451), and LT (p = 0.302) between angle closure glaucoma and occludable eyes. CONCLUSIONS: South Indian eyes with angle closure glaucoma and occludable angles seem to have significantly shorter axial lengths, shallower anterior chambers and greater lens thickness compared to the normal group.
Dr. Lingam Vijaya, Medical and Vision Research Foundation, Sankara Nethralaya, 18 College Road, Chennai, India - 600 006. chennaigs@rediffmail.com
Classification:
9.3 Primary angle closure glaucomas (Part of: 9 Clinical forms of glaucomas)
