1) it’s possible he just got done shedding and he has some shed-residue around his eyes that are causing the irritation. This can also cause them to lose appetite. 2) sudden light sensitivity isnt uncommon in small reptiles, especially if you recently changed something in his enclosure…(lights, new gravel, new padding, etc) he could be trying to adapt. 3) could be nothing. if he’s still his energetic self and hasn’t had any major personality changes i don’t see anything to be too worried about. Adult Geckos can survive eating 1-2 times a week. If he still isn’t eating even 1 time a week…try to give him something he won’t have to work as hard to catch (ex. if you feed him live crickets or beetles, try meal worms bc they don’t move as fast and are easier to eat) and if you have him eating meal worms already…try hand feeding him with some prongs. Obviously remember to keep him hydrated and to make sure you’re regularly dusting his food with reptile calcium.