At about 50 I began getting corneal abrasions. My eyes dry out while sleeping and when I open them in the morning, my eyelid would take a certain amount of my cornea with it. Usually just one eye but sometimes both.

I trained myself to not open my eyes when I wake up. I work them carefully until I feel safe. Sometimes it still happened a few blinks later.

Besides being excruciating, the abrasion mostly blinds me for a few hours. One eye is shot and the other is gushing water. It's a tough way to start the day and I can't recommend it.

For a few weeks afterward, I'll see a 25% halo just above a light source. Together they resemble a parasailer at a distance.