Lamellar flap corneal biopsy.

A modified technique of corneal biopsy is described that allows a lesion in the deep corneal stroma to be accessed for scraping or biopsy while sparing the stromal tissue anterior to the lesion. This technique may be especially valuable in cases of deep corneal pathology in which traditional methods of corneal biopsy risk excessive removal of tissue, which, in turn, can lead to complications such as thinning or perforation.