Severe eye problems likely due to phototherapy light treatment

I've been searching the internet for months, to no avail, trying to get information on what kind of damage can be done to an infant's eyes (a preemie at that) when their eyes are not properly protected during phototherapy treatment. I posted a couple of pages online, going into detail about what my Grandson went through while receiving phototherapy. It is a bit lengthy. Could you possibly take the time and look over the pages and give me your personal opinion?

I have been worried the whole time (he is now 6 1/2 mos old) about him having eye problems due to inadequate eye care. He just had a 6 mo. eye checkup and the eye dr. said that he is very, severely farsighted and nearsighted. He said that he is basically legally blind, as he cannot focus on anything. It says all over the internet that one reason the eyes are to be covered is to prevent retinal damage.

Please take a few moments when you have some time, as I am not able to get any definitive answers online because there just are no answers because they just simply cannot do studies to find out what kind of damage the lights can cause. Not human studies anyway.

Thank you for your cooperation and concern.