(Jon of the Clue Crew shows an anatomical diagram on the monitor.)  When Lasik eye surgery is performed, a flap is made in the eye, folded back, & then the stroma, or middle section, of this eye part is reshaped using lasers
The 
procedure involves creating a thin flap on the eye, folding it to enable... [DOC] [TLE] Keratoconus Surgery and Cross-linking - elibraryweb.net [PAR] with keratoconus stabilize at a stage where functional vision can be maintained 
with spectacles, ... Medical Director, Midland Eye Institute, Solihull ..... 
Repeatability of corneal thickness measurements made by a scanning slit 
topography system.