Hello,
How long has the eye been droopy? Are you sure he is blind in the other eye?
Please review your tank setup with us also, such as the type/brand of UVB, temperatures,
substrate & supplementation, too.
How old is your dragon?
If you have pictures of your tank setup, that is always helpful, too.
Droopy eyes can be from supplementation issues, or kidney problems or possibly heart problems.
Genetics also play a role as well.
Is his appetite good or has he not been eating?
Tracie