The lifetime risk in normal eyes is about 1 in 300.

Through them he could see all that could be seen with normal eyes, and something more as well.

The normal eye could see nothing, but through the glasses a clear trail was left.

She fairly glowed with energy now, even to normal eyes.

It was quite impossible, with normal eyes, to tell who was talking.

Somehow he was sure that with normal eyes it would not have been visible.

In a normal eye, light enters and passes through the lens.

The data was moving far too fast for normal eyes to follow, but neither of them mentioned it.

In his now normal eyes was a disappointed look.

Far out to sea, invisible from shore to any normal eyes, was a large boat.