The most basic eye change is connected with variations in light intensity.

The eyes cannot form images, but are still capable of registering light intensity.

Most of the results obtained in varying light intensity have been as expected.

You can see a sharp change of something like 3% in light intensity, but less than that gets difficult.

The hue of the leaves varies according to light intensity.

Of course, measuring light intensity only gives us a black-and-white image.

For five or six minutes there was a slow reduction in light intensity.

It can only operate in a fairly narrow range of light intensity.

The light intensity is different above and below water.

However, their reaction time to a change in the light intensity is long, about 140 ms at 25 C.