Variation of angle parameters in asians: An anterior segment optical coherence tomography study in a population of Singapore Malays

Abstract

Purpose: To assess variations in angle parameters using anterior segment optical coherence tomography (AS-OCT) and to investigate demographic, ocular and systemic associations of angle width. Methods: This was a substudy of a population based, cross-sectional survey of 3280 (78.7% response rate) Malay people aged 40 to 80 years in Singapore. All participants underwent a standardized interview and ocular and systemic examination. AS-OCT was performed on 291 consecutive patients in standardized dark conditions. Angle opening distance (AOD-500) and trabecular-iris space area (TISA-500) 500 μm from the scleral spur were determined for the nasal and temporal angles. Anterior chamber depth (ACD) w..