Good vision in dim light and clusmy in day lights seen in-
Coical cataract
Morgagnian cataract
Nuclear cataract
Steroid induced cataract
In cupuliform type of senile coical cataract, saucer shaped opacity develops just below the capsule usually in the central pa of posterior coex (posterior sub-capsular) which gradually extends outwards. So vision is better in dim light when pupils are dilated. Ref: AK Khurana 6thE pg189 REF IMG
Lens