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Utility of objective refraction measured with a wavefront sensor in keratoconic eyes Sanae Asonuma 1 , Shizuka Koh 1,2 , Naoyuki Maeda 3 , Asaki Suzaki 4,5 , Takashi Fujikado 5 , Kohji Nishida 1 1Department of Ophthalmology, Osaka University Graduate School of Medicine 2Department of Innovative Visual Science, Osaka University Graduate School of Medicine 3Kozaki Eye Clinic 4Clinical Research & Development Center, Menicon 5Department of Applied Visual Science, Osaka University Graduate School of Medicine pp.1729-1736
Published Date 2018/12/15
DOI https://doi.org/10.11477/mf.1410212995
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Abstract Purpose:To evaluate the utility of the objective refraction value measured using a wavefront sensor(WF)in eyes with keratoconus.

Subjects and Methods:Thirty-four eyes of 26 patients with keratoconus were enrolled. Best-corrected visual acuity ranged from 0.5 to 1.5(median 1.1), and mean keratometric power was 52.1±3.0D(range, 48.2-58.2D). Spherical equivalent values measured with an autorefractometer(REF), a WF, and using subjective refraction(SUB)were compared.

Results:All eyes were examined with a WF, but eight eyes could not be examined with an REF. A significant correlation was observed between values measured using SUB and an REF, and between those measured using SUB and a WF(r=0.703, p<0.001 and r=0.828, p<0.001). The difference between the values from SUB and objective refraction was≦2.00D in 19(55.9%)eyes in REF and 27 eyes(79.4%)in WF. Measurements obtained using a WF had a significantly smaller error than those obtained using an REF(p=0.027). In addition, WF and SUB values showed a significant positive correlation even in eyes that could not be examined with an REF(r=0.976, p<0.001).

Conclusion:Objective refraction measured with a WF is useful as reference data for the SUB test in eyes with keratoconus


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