Ophthalmologic device for measuring eye refractive power

Details Ophthalmologic device for measuring eye refractive power Ophthalmologic device for measuring eye refractive power

1996-10-29

1998-10-27

Mai, Huy

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351211, A61B 310

Patent

active

058284397

ABSTRACT:
Ophthalmologic apparatus and methods are disclosed that permit reliable measurement of the refractive power of an eye both after and during invasive eye surgery. The refractive-power measurement is based on the output of a light sensor when a light flux, projected onto the retina, is reflected from the retina. The apparatus comprises a processor in which data regarding the intraocular pressure of the eye, before surgery and/or during surgery, can be entered. With refractive-power measurements obtained during surgery, the processor is operable to calculate, from the intraocular pressure data, a corrected refractive-power value for the subject eye under normal intraocular pressure conditions.

REFERENCES:
patent: 4390255 (1983-06-01), Nohda et al.
patent: 5555039 (1996-09-01), Iki et al.

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