Measuring of ocular wavefront aberration in large pupils using OPD-scan.
Wavefront analysis using a scanning slit refractometer (the OPD-Scan) was evaluated in both artificial and human eyes, in comparison with the Hartmann-Shack wavefront sensor (H-S) currently often used. Comparison of different methods and configurations carried out in the artificial eyes yielded basically the same results in moderate refractive error cases. There was a closer match between the RMS (root mean square) wavefront error obtained by OPD-Scan and H-S in the 6 mm pupils than in the 4 mm pupils of the same normal human eyes. Although OPD-Scan employs a different approach in determining aberration, the aberration value is similar to that of H-S, especially in large pupils.
Hieda
Osamu
O
Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Kamigyo-Ku, Japan. ohieda@ophth.kpu-m.ac.jp
Kinoshita
Shigeru
S
D000328:Adult; D003315:Cornea / Q000473:pathology*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation; D006801:Humans; D008875:Middle Aged; D008954:Models, Biological; D009216:Myopia / Q000473:pathology*; D011680:Pupil; D014786:Vision Disorders / Q000175:diagnosis*