How would I tell if a baby I have is blind. He is a month old. temps, humidity, and feedings and lights are all good. All the others are doing great. I have separated him thinking it would help but he still hardly eats and seems like he has no depth perception and likes to keep his eyes closed. He will open them but doesn't seem to be very responsive with movement around him. If he is blind will he be ok or is the little guy going to starve to death?