Answer: sclerotic

AnswerCrossword Clue
SCLEROTICOf an eye membrane
scleroticOf or having sclerosis
sclerotichard, indurated also SCLEROID, SCLEROUS / the firm outer coat of the eyeball, which is often cartilaginous and sometimes bony
scleroticOf or relating to the sclera
scleroticBecoming rigid and unresponsive; losing the ability to adapt