light reflex

When doing the test, the light reflexes of both eyes are compared, and will be symmetrical in an individual with normal fixation.

"There are bizarre light reflexes in the atmosphere.

His paintings tend to feature calm, predominantly blue spaces, punctuated by white light reflexes that constantly reoccur in his later work.

Pupillary Light Reflex is modeled as a physiologically-based non-linear delay differential equation that describes the changes in the pupil diameter as a function of the environment lighting:

It followed the path of a steep parabola, thus forming a dazzling arch of swirling and foaming masses of water whose myriad light reflexes painted their picture screens with a scintillating riot of colours.