Please take the article with a huge grain of salt. Hundreds of millions of years ago, vertebrate eyes originally evolved backwards. Evolution hill-climbs, so the backwardness (and ensuing disadvantages like the blind spot) can never be fixed. Tricks with glial cells are nature making the best of a bad deal.
Also, the author's ignorance of biology concerns me. In one comment, he thought that color-blind people saw in grayscale. If you know how human cone and rod cells are set up, such an idea seems preposterous.
Also, the author's ignorance of biology concerns me. In one comment, he thought that color-blind people saw in grayscale. If you know how human cone and rod cells are set up, such an idea seems preposterous.