(In the choice of a gift I had perhaps unconsciously emphasized the pleasure of human eyesight, which was so much more precise than any dog's.)

Some birds, such as hawks, are believed to have an acuity of around 20/2; in this respect, their vision is much better than human eyesight.

But he saw nothing; human eyesight was considerably better than his.

We need clouds and rain to conceal our getaway from ordinary human eyesight, since we have no true darkness at this time of year.

A 4:3 ratio mimics human eyesight visual angle of 155 h x 120 v, that is 4:3.075, almost exactly the same.

What lawrencium looks like is not known because not enough has been made to see it with human eyesight.

It was very dark down there and human eyesight is not good in the dark.

There are certain projects where human eyesight is advantageous over video cameras.

The sky was simply darkness overhead; even the flying clouds pursued their way invisibly to human eyesight.

Installing the die against these measurements, rather than by human eyesight, immediately cut the change-over to a mere hour and a half.