A researcher shines a very intense light at 850 nm into the open eyes of a research participant.Under these conditions, the pupil will instantly shrink and accommodation will occur.

Question

Quizplus · Accepted Answer

The pupil will indeed shrink in response to intense light due to the pupillary light reflex, but accommodation (adjustment of the lens for focusing) is not directly triggered by light intensity; it is a response to changes in visual focus, particularly for near objects.

A Researcher Shines a Very Intense Light at 850 Nm