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Objective phoropter system
专利权人:
发明人:
Marc Abitbol,Ran Yam,Haggai Herman,Ian Melnick
申请号:
US14390794
公开号:
US09462939B2
申请日:
2013.04.04
申请国别(地区):
US
年份:
2016
代理人:
摘要:
Systems for performing combined phoropter and refractive measurements to ascertain the aberrations present in the eye of a subject. The systems use a pair of phoropter wheel assemblies, one for each eye, each assembly comprising a number of lens wheels incorporating the series of lenses and wedges required to compensate for a range of refractive vision aberrations. The vision of each eye is corrected by a combination of a subjective phoropter measurement, iteratively performed with an objective wavefront analysis measurement to determine the residual aberrations existing after the initial phoropter correction. The system is able to automatically align the axes of each wavefront analyzer with is corresponding eye, by means of centering the pupil image in the wavefront analyzer camera, and to determine the pupil distance. By changing the focusing point on the wavefront analyzer of the light reflected from the eye, the corneal profile can be measured.
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