(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
It was not until 1957 that resting electrocardiography was made an 
ICAO ...... designed to assess the effect of coronary artery bypass surgery on 
mortality ...... Diabetes mellitus is known to affect all parts of the eye, e.g.