2M.D., İzmir University Faculty of Medicine, Department of Ophthalmology, İzmir/TURKEY Purpose: To comparison of anterior chamber depth (ACD) and axial length (AL) measurements by the IOLMaster and A-scan ultrasound.
Material and Method: Sixty right eyes of 60 patients (29 male and 31 female) were included in the study. Firstly, ACD and AL were measured IOLMaster (Carl Zeiss Meditec, Jena, Germany), after that A-scan ultrasound (SW-1000, Suowei Co., Tianjin, China) measurements were performed. Results were elaborated using Pearson’s correlation and paired-t test.
Results: The mean age of patients were 24.6±4.90 years (16-32). Mean values and ranges of ACD and AL were as follows respectively, 3.19±0.28 mm (2.63-3.66) and 22.85±0.75 mm (21.93-24.87) for IOLMaster, and 2.97±0.29 mm (2.46-3.35) and 22.76±1.00 mm (21.68-25.50) for A-scan ultrasound. Mean difference in ACD and AL measurements for IOLMaster was 0.22 mm and 0.09 mm higher than A-scan ultrasound, respectively (p<0.0001 and p=0.01, respectively). The correlation between two methods was statistically significant (r=0.922, p<0.0001 and r=0.985, p<0.0001, respectively).
Conclusion: Although there was high correlation between measurements, statistically significance was found between two methods. Optic biometry should be preferred since reducing the risk of potential refractive error associated with surgery.
Keywords : IOLMaster, A-scan ultrasound, anterior chamber depth, axial length