defective vision

16 LETTERS · STARTS WITH D

defective vision is a valid 16-letter word worth 27 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

D2E1F4E1C3T1I1V4E1V4I1S1I1O1N1

2 + 1 + 4 + 1 + 3 + 1 + 1 + 4 + 1 + 0 + 4 + 1 + 1 + 1 + 1 + 1 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does defective vision mean?