Yesterday I had an uncomfortable scare with my vision. My Libre sensor failed on my way to church - thankfully I was planning to travel right after, so I had all my diabetes stuff packed with me. Unfortunately, I have to wait 24 hours after applying a sensor before activating it or it’s wildly inaccurate and useless. That plus driving 5 hours after lunch meant I was distracted and more conservative treating my BG (and also just couldn’t test as often as I’d prefer because I was driving). I ended up hovering around 200 for over an hour.
About an hour into this, I started noticing pressure in my eyes, which has happened with both high blood sugar levels and fast shifts. Then an hour and a half in, I noticed the (sort of) white interstate divider to my left was tinged red; my peripheral vision on that side was red. Cue panic and more hurried treatment for my BG. The red gradually faded, as did the pressure, as my BG returned to normal levels, but I was still concerned - I wasn’t sure if blood had just settled out of my field of vision. I went to bed last night with a not insignificant level of trepidation, anticipating a return of red vision this morning, but all is fine.
Has this happened to anyone (and resolved without treatment)? I honestly had hoped that BG levels in the high 100/low 200s wouldn’t cause too many issues, because my control has not been as tight in recent months (burnout + mom on hospice 5 months and now passed 3 weeks ago, so I’ve been traveling/away from home a ton). I still try to keep it close to/under 100 when fasting and quickly address anything that gets above 180ish after meals - I never get up to 300 because I think I do still have some insulin production - but there have been many times I’ve lost track of things and found myself higher than I like for longer than I like. Now I have to figure out how to tighten control without burning myself out (and get in to see an eye doctor within the next week…).