Evaluation of anterior segment parameters with two anterior segment optical coherence tomography systems: Visante and Casia, in primary angle closure disease

• DOI: 10.4103/ijo.ijo_641_18
• Publication Date: 2019-04-04T11:31:02Z
• Authors: Dewang Angmo; Reena Singh; Shweta Chaurasia; Suresh Yadav; Tanuj Dada
• Keywords: Anterior chamber angle

To determine the comparability of anterior chamber biometric measurements in primary angle closure disease (PACD) patients using two commercially available segment optical coherence tomography machines (ASOCT): Visante and Casia.This was a cross-sectional observational study, which included clinically, diagnosed cases PACD. Anterior were done Casia ASOCT. Parameters studied central corneal thickness (CCT), depth (ACD), nasal (N) temporal (T) opening distance at 500 μm (AOD500) 750 (AOD750), N T trabecular iris space area (TISA500) (TISA750).Total 36 PACD (72 eyes) with average age 59.48 ± 7.95 years recruited, out 25 females (69.44%) 11 males (30.56%). The mean CCT, ACD, AOD500, TISA on 522.5 34.75 539.55 29.56 (P = 0.00); ACD- 2.144 0.38 mm 2.133 0.39 0.487); AOD500-0.27 0.16 0.21 0.10 0.04); TISA500-0.100 0.07 0.063 0.03 0.00), respectively. A statistically significant difference noted AOD, TISA. good corelation for ACD CCT (ACD 0.9816 0.772) only between machines. Bland-Altman plot analysis different parameters has revealed agreement measurement but poor rest parameters.It is advisable not use interchangeably because wide limits correlation values