The waiting room had mostly ordinary glasses on display. But there were also several very splashy ones.
The blue at the bottom is the macula. And he pointed out where a few bits are breaking off. He didn't seem to worried at the moment. I couldn't make sense of this at first but he explained it was at the back of the inside of my eye. This picture I got online might help.
Image from dreamstime |
"The macula is part of the retina at the back of the eye. It is only about 5mm across but is responsible for all of our central vision, most of our colour vision and the fine detail of what we see.It's pretty important.
The macula has a very high concentration of photoreceptor cells that detect light and send signals to the brain, which interprets them as images. The rest of the retina processes our peripheral (side) vision."
If I understand this right, the white spot in the darkish area is the macula. Then there are other areas and layers of the eye as you can see in the chart above.
Here's a different view.
I need to wrap this up because Alaska's being given a bad rap again - a storm from the Gulf of Alaska is headed for (maybe already there) Northern California and we're supposed to get rain here in LA tonight. So I want to go for my bike ride before it starts. It's already pretty gray out.