A New Method of Cryoextraction

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Abstract
A new technique of cryoextraction employs an instrument with the freezing confined to the undersurface of the probe tip. The probe lip can be used to retract the iris and apply the freezing to the equator of the lens without the use of an iris retractor. Spread of surface ice is prevented and the warm sides of the probe will not damage the corneal endothelium if it is inadvertantly touched. No assistant is required to retract the cornea which is performed with the surgeons free hand. This hand can also be used to break the zonules or vitreous adhesions under direct vision. Corneal folding is minimized as its cut edge can lie on the probe sides. Extraction is more easily controlled. The new method obviates the few disadvantages of cryoextraction.

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