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Lamellar transplants possible in the field with modified microkeratome

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IRVINE, Calif. — A modified microkeratome may help corneal surgeons in developing countries where cost, portability and electricity availability are issues.

The head of a Moria LSK One microkeratome was modified by researchers here at the University of California to make it large enough to incorporate the whole human anterior corneal surface in a pass. The gas-turbine-driven microkeratome was coupled to a manual vacuum pump. The resulting machine was capable of performing a sclerokeratectomy for purposes of lamellar transplantation.

The microkeratome was tested on fresh porcine globes using two blade depths, 170 µm and 200 µm. The resulting lenticules were fairly circular, with average diameters of 12.85 mm for the 170 head and 13.25 mm for the 200 head.

The study is published in the August issue of Cornea.