meg- sometimes my husband's eyelids get twitchy--I have always assumed that ALS could affect them. his eyes get dry and very tired. he doesnt complain at all so I don't know if his vision is affected . I would think that if the eyelid muscles are not closing enough due to ALS, that the eyes would get dry and that would affect vision. I think I have even read on this forum about someone who's eyes wouldnot shut due to ALS and they had to be taped down at night. not sure how old you husband is, but remember that most all people over 40 experience a change in vison! I did--went from perfect to needing readers in just a year and sound like my mom now when I say "it's too dark in here to read" and "why are the directions on this box so small"
but, I rinse my hubby's eyes acouple of times a day with a pH balanced eyewash (not visine) just to make them feel better. He likes to be on the computer sometimes 10-12 hours per day snd I do notice that his eyes get very red and tired. books on audible.com is nice--we can listen together. he cant turn the pages anyway or hold a book so that works good.
It does suck always needing to adapt the way things are done! Hang in there!