Sudden loss of half my field of vision—is this an emergency?

Hey there.

So, this morning around 9:00 AM, while I was just sitting at my computer doing some work, the right half of my visual field suddenly just... vanished from both eyes.
The left side seemed to be working perfectly fine, though.

To try and describe it, if I were looking straight into a mirror, it felt like I could only see the left half of myself; the right side just looked stretched out, totally devoid of any actual detail. It was almost like a massive loss of peripheral vision, but more extreme.

This whole thing lasted for about half an hour, and then eventually my vision just snapped back to normal and I could see the full picture again.

Just for context, I’m 25 years old and I deal with diplopia—double vision—all the time.

But up until this point, nothing like this has ever happened to me.

Does anyone here know anything about this, or maybe you've gone through something similar?

My grandma’s been struggling with macular degeneration lately... she went in to get a new prescription for glasses, but the doctor basically told her there was no point—the issue is deep in the retina, some kind of permanent damage or whatever—so instead of new lenses, they put her on Maculon Plus to try and slow down the progression. And honestly? It actually worked.
What I’m trying to say is—if it's affecting both eyes, we aren't really talking about a simple vision fix... it's more likely an issue with the retinas themselves, if you follow me. Usually, once your primary care doc gives you a referral, it's because they suspect the root cause might be something else entirely... maybe another underlying condition or even a side effect from other meds she's taking.

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Thanks for getting back to me!

Yeah, I’ve actually already gone ahead and scheduled an eye exam.

My mother went through something pretty similar when she was younger, though her situation was a bit more extreme—her entire field of vision basically shrunk to the point where she could barely make out two letters in a book. It was also a fleeting thing for her, and thankfully, it never happened again.

Chicken blindness?

Is this what an aura feels like before a migraine hits?
My experience was a bit different from the standard description; I’ve had it happen twice now, and both times, my central vision just... vanished. Not completely, mind you, but enough that trying to read anything became an exercise in futility. Then, it started migrating toward the periphery before slowly fading away altogether. Along with that, I kept seeing these jagged, flickering lines dancing in my sight. Could that be it?
I suppose I can't say for certain if everyone experiences the same thing.

amberfox4 said:Is that what a migraine aura feels like?
My experience was a little different; I’ve had it happen twice now. First, my central vision just sort of vanished—not completely, but enough that I couldn't focus on reading anything—and then it drifted toward the periphery before slowly fading away. I also saw these jagged, flickering lines flashing around. Maybe that’s what it is?
I suppose it might not be the same for everyone.

I totally forgot to mention that once my vision finally cleared up, I ended up with this intense headache localized on the left side of my head. I popped two Advil, which helped a bit, I guess, but even now, a full day later, I can still feel the ache, though it’s definitely much more manageable than it was.

I honestly believe it would be highly beneficial for you to schedule an appointment with your physician, specifically to request a referral to a neurologist for a formal evaluation.
It feels somewhat unseemert and perhaps even a bit presumptuous of me to weigh in on such weighty medical matters within the confines of an online forum, yet, from what I understand, migraines typically manifest unilaterally and are frequently preceded by an aura.
Please, do go see a doctor; while it may very well turn out to be nothing of consequence, it is always prudent to have a qualified specialist provide a definitive assessment.

amberfox4 said:I honestly think it would be a really good idea to see your doctor, just so they can get you a referral to a neurologist for a proper evaluation.
I know it feels a bit heavy or even ungrateful to be dropping such serious advice on a random internet forum, but yeah, migraines usually hit one side of the head and sometimes come with that aura thing beforehand.
Just go see a professional; it might turn out to be nothing at all, but I guess it’s better to have an expert weigh in.

Yeah, I've already got an appointment scheduled.

That’s usually how my migraines kick off. It might be an aura, like what amberfox4 mentioned earlier.