noun
one eye; one of one's eyes
Refers to a single eye, often in contrast to both eyes or when one eye is closed, injured, or covered.
彼は片目をつぶって的を狙った。
He closed one eye and aimed at the target.
その猫は片目が青く、もう片方は緑色だ。
That cat has one blue eye and the other is green.
noun
blind in one eye; person blind in one eye
Can refer to the condition of being blind in one eye, or to a person with that condition. Often used in set phrases like 片目になる or 片目の人.
事故で片目になってしまった。
I lost sight in one eye due to an accident.
片目の人が使える補助具がある。
There are assistive devices that people blind in one eye can use.
Compound of 片 (kata, 'one side') + 目 (me, 'eye'). The reading かため is a standard rendaku form.