We really can’t tell you, see an optometrist or ophthalmologist.

I'm not sure why you were downvoted, but this does sound relatively serious. You really should see an eye doctor.

My peripheral vision is much more sensitive to light than my central vision in the dim lighting as well. Neither is very good anymore, but the difference is quite noticeable. Definitely talk to your doctor about it.

I have a blind spot and that’s how it works. Stuff just… disappears. But no one here can tell you anything for sure

most likely.