Instrument for marking out the central optical zone of the cornea
OwnerBoris P. Golubkov, Svyatoslav N. Fedorov +2inventors
InventorsBoris P. Golubkov, Svyatoslav N. Fedorov, Valery V. Durnev, deceased, by Tamara S. Durneva, administratrix
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Abstract
An instrument for making out the central optical zone of the cornea having an oblong body featuring the edge of one of its ends sharpened, while the diameter of the body across said end equals a preset diameter of the central optical zone, and a sight is accommodated inside the body square with the longitudinal axis thereof, the sighting point of said sight lying on the longitudinal axis of the oblong body of the instrument.
Claims15
An instrument for marking out the central portion of the optical zone of the cornea, comprising an oblong hollow body featuring the edge of one of its ends sharpened, while the diameter of the body across said end equals a preset diameter of the central optical zone, and a sight accommodated inside the body at right angles with the longitudinal axis thereof, a sighting point of said sight lying on the longitudinal axis of the oblong body of the instrument.
An instrument for marking out the central optical zone of the cornea comprising:
- a generally oblong, hollow body;
- said body having a diameter at one end thereof substantially equal to a predetermined diameter of said central optical zone;
- said end having a cutting lip;
- and
- sighting means secured in said body substantially perpendicularly to the longitudinal axis thereof;
- said means having a pointed inner end lying on said longitudinal axis.
Dependencies are inferred from the claim text.