Comparison of anterior chamber depth in healthy myopic Thai eye using Orbscan and ultrasound.
OBJECTIVE
To compare the anterior chamber depth (ACD) using ultrasonic and optical measurements.


METHODS
In this prospective study, ultrasound and optical (Orbscan) devices were employed to measure ACD in 42 eyes of 21 myopic volunteers. ACD values were compared using the paired-sample Student t test. The correlation of ACD values obtained from two groups was assessed by linear regression analysis.


RESULTS
The difference of mean ACD values between the ultrasound (3.02 +/- 0.37 mm) and Orbscan (3.56 +/- 0.42 mm) method was statistically significant difference (p < 0.0001).


CONCLUSIONS
The optical measurement of ACD in healthy myopic Thai eyes is, on average, 0.54 mm greater than ultrasonic measurement; however, both methods posses a significant linear correlation.
Chaidaroon
Winai
W
Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand. wchaidar@mail.med.cmu.ac.th
Jengjalern
Atchareeya
A
D000328:Adult; D000867:Anterior Chamber / Q000000981:diagnostic imaging* / Q000473:pathology*; D044466:Asian People; D005260:Female; D006801:Humans; D008297:Male; D009216:Myopia / Q000000981:diagnostic imaging* / Q000473:pathology*; D011446:Prospective Studies; D013785:Thailand; D041622:Tomography, Optical; D014463:Ultrasonography