About two weeks ago I had a migraine aura.
The next day, because of bright sunshine I wore large wrap around polarised dark sunglasses over my distance glasses. These are optically good.
After being out for 15 minutes I removed my sunglasses indoors, and what happened was bleak.
The top 30% of my vision was missing, just black nothingness.
I quickly surmised that what I was seeing was my missing vision due to my eyebrows and forehead.
I assume that my eyes can see 80 degrees off axis in any direction as I can see this sideways.
The missing top vision is completely compensated for by the brain, which sees an overall equal picture.
I thought that my vision would return to normal in ten to fifteen minutes, which is what it slowly did in varying shades of grey. Not fifty, but several.
My optician has never heard or read of this, and says I should repeat it to be scientific, but it is a bit too frightening to try again. Although I am pretty sure what happened.
We definitely do not see what we think we see.
Does the bottom part of our retina have less cells because we don't use this top vision much?
What we see is actually what our brain lets us see.
The next day, because of bright sunshine I wore large wrap around polarised dark sunglasses over my distance glasses. These are optically good.
After being out for 15 minutes I removed my sunglasses indoors, and what happened was bleak.
The top 30% of my vision was missing, just black nothingness.
I quickly surmised that what I was seeing was my missing vision due to my eyebrows and forehead.
I assume that my eyes can see 80 degrees off axis in any direction as I can see this sideways.
The missing top vision is completely compensated for by the brain, which sees an overall equal picture.
I thought that my vision would return to normal in ten to fifteen minutes, which is what it slowly did in varying shades of grey. Not fifty, but several.
My optician has never heard or read of this, and says I should repeat it to be scientific, but it is a bit too frightening to try again. Although I am pretty sure what happened.
We definitely do not see what we think we see.
Does the bottom part of our retina have less cells because we don't use this top vision much?
What we see is actually what our brain lets us see.