Let's start with the human eye. The human eye has an angular resolution of about 1 arcminute. That's pretty impressive. Take a circle surrounding you on the horizon, divide it into 360 little bits, ...

Human eyes can’t decipher individual pixels from far away—this video shows why. A version of this story appears in the October 2018 issue of National Geographic magazine. Short for “picture ...

If I use 1 arcminute instead, the scale factor is smaller, about 3438. So let’s convert that to inches to see how small a pixel the human eye can resolve at a distance of one foot: 12 inches / 3438 = ...

Eventually, the human eye will reach a limit to how much more detail it can see as it can only discern sharpness to a certain degree. Developing resolution beyond about 576 MegaPixels would not be ...

Chapter 1, "The formation of the human eye," focuses on overall eye embryology ... for those of us over 50 of the way accommodation, resolution and other functions change over a lifetime.