Kitten with a cloudy eye

[Kibonumwe]

I have new kitten, an orphan I adopted a week ago. He is approximately four weeks old. He fell out of a ceiling and is skinny, but seems to be otherwise in good health. Over the past two days the right eye has become cloudy to the point of opacity and is a blueish-gray color. There is no discharge from the tear duct or residue on the eyelids or cornea. Finding a vet soon is not a realistic option because I live in the remote highlands of Rwanda. The only medicines I have are OTC's, and the antibiotics erythromicin and Ciprofloxacin. I need some solid, low-resource advice from knowledgeable cat experts. Please help.