Photosensitivity solution

A corneal ulcer is painful, and at least some of the pain comes from iris spasms, which are treated with eye dilating drops (paralyze the iris, it stops spasming). This is good for pain, but makes every light unbearably bright.

So, what does an enterprising self-employed person do, who needs to get some work done?

eyepain.jpg

She improvises (picture posted with permission).