Population-Based Normative Data Of Anterior Segment Optical Coherence Tomography And Ocular Biometry In Elderly Suburban Thai Population: A Preliminary Report From The Bangkoknoi Model Project (Banmop)
Published 2025 - 43rd Congress of the ESCRS
Reference: PO258 | Type: Free paper | DOI: 10.82333/0e73-s345
Authors: Luis Izquierdo* 1 , Cathiana Garcia 2 , Isabel Gomez 3 , Ana Paola Mercado 3 , Rolando Rojas 3 , Samuel Arba Mosquera 4 , Maria A Henriquez 5
1Research Department,Oftalmosalud Instituted of Eye,Lima,Peru;San Fernando School of Medicine,Universidad Nacional Mayor de San Marcos,Lima,Peru, 2Cornea Department,Oftalmosalud Instituted of Eye,Lima,Peru, 3Research Department,Oftalmosalud Instituted of Eye,Lima,Peru, 4Optical & Visual Researcher,SCHWIND eye-tech-solutions GmbH,Kleinostheim,Germany, 5Research Department,Oftalmosalud Instituted of Eye,Lima,Peru;Faculty of Human Medicine,Universidad Ricardo Palma,Lima,Peru
Purpose
To describe various parameters of normative data for anterior segment optical coherence tomography (OCT) in an elderly population from suburban areas in Thailand.
Setting
This prospective cross-sectional study was conducted from April 2024 to August 2024 in Bangkoknoi district of Bangkok, Thailand. All participants were elderly volunteers aged > 50-year-olds.
Methods
Eyes with the history of glaucoma, ocular trauma, and ocular surgery were excluded. The ACA parameters were examined using AS-OCT in a normal room light condition. The horizontal scan (temporal-nasal meridian) was used for data analysis. If both eyes were eligible, only right eye was included.
Results
A total of 1,176 participants with the mean age of 65.2-year-olds included in the study. The mean anterior chamber depth was 3.12 mm. The average anterior opening distant (AOD) 500 and AOD750 were 0.30 and 0.39, respectively. Mean trabecular iris space area (TISA) 500 and TISA750 were 0.11 and 0.19, respectively. There were 55 eyes (4.7 %) with ADC less than 2.5 mm (angle-closure at risk). Angle-closure at risk eyes had mean AOD500, AOD750, TISA500 and TISA750 of 0.15, 0.16, 0.06, 0.09, respectively, compared to 0.30, 0.40, 0.11, 0.19 in eyes with open-angle (1150 eyes), respectively. All ACA parameters were significantly lesser(P<0.001) in angle-closure eyes than open angle eyes.
Conclusions
This study reported the normative data of ACD and ACA parameters using AS-OCT in elderly adults from suburban area of Thailand. Eyes with the risk of angle-closure had statistically significant less ACA value than open angle. AS-OCT had diagnostic value to identify PACD at risk in population-based survey.