I made a mistake. I went to get a UVB for my little sulcata boy and I *assumed* that if it was advertised towards animals, it wouldn't literally cause blindness. I got a coil UVB and used it for around a 2 weeks. My tortoise has recently began closing his eyes when he is awake/walking around with one eye closed. Has anyone had experience with this and know how bad it is and how to treat it?