Eye refraction: a comparative study between autorefractometer, aberrometer and subjective test

Purpose To compare the ocular refractions given by three different techniques and to determine which provides better visual comfort. Methods All subjects underwent a completed optometric examination including clinical history, biomicroscopy of the anterior segment, subjective best corrected visual acuity, autoref/keratometer WAM‐5500 and aberrometer iTrace. Monocular measurements were made under natural accommodation and pupil size. The conditions of the tests were vertex distance 12mm, resolution of the refraction 0.12D, distance 7m and 3 measures each time. Subjects were classified as myopic group (20 eyes) if they presented subjective refraction ≥|‐0.50|D and low‐hyperopic/emmetropic group (22 eyes) if their subjective refraction was