Surgery – Instruments – Corneal cutter or guide for corneal cutter
Patent
1989-06-05
1991-05-07
Hafer, Robert
Surgery
Instruments
Corneal cutter or guide for corneal cutter
128898, 351212, 351205, A61D 100
Patent
active
050133195
ABSTRACT:
An apparatus for maintaining a patient's visual fixation and centration while marking the patient's cornea comprises a housing, a light source axially aligned and integral to the housing to maintain the patient's visual fixation and centration while the cornea is marked with the light source acting as a point source of light and enabling the patient to see a shadow image of the patient's pupil, and means for marking the cornea which are integral to the housing and positioned such that the light source and means for marking are axially aligned. A method for maintaining a patient's visual fixation and centration while marking the cornea employs the apparatus in such a manner that the patient looks directly at the center of the image emanating from the illuminated light source, which is a shadow image of the patient's pupil, and the means for marking are then employed to place a mark on the patient's cornea. The apparatus and method are advantageous in that they provide a simple and effective means of accurately marking the cornea prior to corneal surgery.
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Hafer Robert
Mount Sinai School of Medicine of the City University of New Yor
Owens Kerry
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