So for some spells that do indeed have targets other than self (and also have a target entry) would Ocular spell make it now possible to score a critical?
Ocular spell states:
(...)When you release an ocular spell, its effect changes to a ray with a range of up to 60 feet. If the spell previously would have affected multiple creatures, it now affects only the creature struck by the ray. You must succeed on a ranged touch attack to strike your target with an ocular spell, and the target is still permitted any saving throw allowed by the spell.(...)
Every spell that has a touch attack (melee/range) and Rays have a critical hit chance (20X2)
So if I was to cast (and release) a spell such as Ocular: Finger of death (succeeded save) or Chain lightning the damage on a successful critical would be doubled.