How lovely. I have a white Japanese bantam hen who is almost blind too. As a chick I though she was a bit 'simple' in the head as she did not act normally.
Its amazing how they learn to cope. Real inspiration for me, as I am partially blind also. She never gets bullied. She seem to by pass the pecking order thing - strange. She has the top rooster as her best friend. She follows him around like glue, pecking at his large tail. Must me like a flag so she can see him.
She can find the large food bowl and water. She often pecks into the air several times before she can find the food, and sometimes dunks her whole head under the water by mistake! She eventually learned to use the roost by simply jumping random into the air and flapping till she eventually lands on the perch.
The only thing I think is sad is she misses out on treats. Even if I hold a meal worm to her face she can not see it. Poor baby. One strange thing is she is active in the dark. Just scratching about and wandering around as if its still daylight. Funny fist time I saw it.