I have a Lutino Cockatiel that's around 1 year and 3 months old. He uses to close his left eye most of the time when he was young, the Vet told it might be a infection and told my to give him BETNESOL-N(eye drops) for a week. He was totally fine after that. But today I found something on his left eye(same eye as before).
I've attached few pics for reference, can someone let me know what is it and what should I do? (His right eye is perfectly normal)
The Vet isn't available and 'cause of Covid, so I really can't take him anywhere.
I've attached few pics for reference, can someone let me know what is it and what should I do? (His right eye is perfectly normal)

The Vet isn't available and 'cause of Covid, so I really can't take him anywhere.