Reta Use After Laser Eye Surgery and Related Vision Concerns

NAION damage is usually permanent because it kills optic-nerve tissue. The only plausible link I see is the dehydration angle you mentioned, plus being sick and skipping drops.

This does not sound like NAION to me; that usually hits one eye with sudden vision loss. It seems more like ordinary dry-eye irritation or maybe a mild viral conjunctivitis. Still, any vision change is worth having checked.

I get the same blurry episodes and I’m convinced it is the reta, probably from blood-sugar swings. The blur usually hits when I have gone a long time without food and clears once I eat. My eyes have also become more sensitive overall since I started the medication.

I would call the eye doctor for another appointment and mention the reta (or just say a GLP-1 if you prefer). Keep the drops, fluids and electrolytes going to see whether the sensation improves. My own dry-eye doctor always pushes hydration, and I have noticed that cleaner eating reduces blepharitis flare-ups that give the same “something in the eye” feeling.

I have the identical symptoms from dry-eye problems and use prescription drops for them. You also mentioned cutting back on drops right when the sensations started, so that is probably the simplest explanation.

One clear side effect I have noticed since starting GLP meds is drier eyes. After LASIK years ago the dryness only lasted the first week, then my eyes were fine. On tirzepatide they felt a bit drier but not enough to need drops. Once I added reta a few weeks ago the dryness became obvious; one morning my left eye was irritated and swollen-feeling. Over-the-counter drops helped and after two days it settled. I now carry mineral-oil lubricating drops and add electrolytes, which seems to help. The metabolic shift plus higher fluid needs appear to be the cause. I would not worry much about the old LASIK, but I would still follow up with the doctor if concerned.

I had LASIK a couple of years ago and felt the same “something in the eye” sensation during the first year. After a few visits they touched up the right eye at no extra cost. Since then I still get occasional dryness or that foreign-body feeling. It is a small trade-off for the vision I gained and I would do the surgery again. I am also on reta now and have not noticed any new eye changes, so this sounds like normal post-surgery behavior to me.

Four words: see an ophthalmologist.