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Large series of biometric data shows correlation between measurements
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BERLIN — The largest data set of biometry results published to date shows that the correlation of axial length with corneal radii, anterior chamber depth and corneal diameter in typical eyes is not seen in extreme myopia and hyperopia, the study author said.
"Anatomy of the anterior chamber can be very disparate from axial length, especially in highly ametropic eyes," Peter C. Hoffmann, MD, said at the European Society of Cataract and Refractive Surgeons meeting here.
He presented a review of biometry results of 23,239 eyes of 15,448 patients measured from 2000 to 2006 with the IOLMaster (Carl Zeiss Meditec). The median age of the patients was 74 years. Eyes in the data set were measured for axial length, corneal radii, anterior chamber depth and horizontal corneal diameter.
Dr. Hoffmann found that the mean axial length was 23.43 ±1.51 mm, the mean anterior chamber depth was 3.11 ± 0.43 mm and the mean corneal radius was 7.69 ± 0.28 mm. He said that anterior chamber depth and axis of astigmatism were correlated with age.