Final answer:
During a normal pupil exam, an expected finding is that both pupils become large in dim lighting due to the pupillary light reflex, which allows more light to enter the eye. Pupil size typically changes from around 3 mm in bright light to about 7 mm in darkness to adjust the amount of light reaching the retina.
Step-by-step explanation:
A normal finding during a pupil exam would be that both pupils are large in dim light. When the lighting is dim, the iris relaxes which causes the pupil to dilate, allowing more light to enter the eye, which is necessary for better vision in low-light conditions. This response is known as the pupillary light reflex.
With the pupils typically being around 3 mm in diameter in bright light and expanding to about 7 mm in dark conditions, the pupils can gather significantly more light. The change in pupil size is critical for protecting the retina from high light levels in bright conditions and for increasing visual sensitivity in the dark.
The uneven pupil size, known as anisocoria, or differing iris colors, a condition called heterochromia, are usually abnormal findings that may require further medical evaluation. The experiment involving the resolution of the eye, where the ability to distinguish two lines as separate diminishes as the distance increases, demonstrates how the size and adaptability of the pupil affect visual resolution.