During training for night combat, soldiers are trained to look slightly to one side of objects they detect. This is because
A) looking directly at an object places the image on the fovea centralis.
B) looking directly at an object places the image on the optic disk.
C) color vision is better if you look slightly to one side of an object.
D) the fovea has very few rod cells, which are necessary for vision in dim light.
E) of both looking directly at an object places the image on the fovea centralis and the fovea has very few rod cells, which are necessary for vision in dim light.

Question

Quizplus · Accepted Answer

The fovea centralis is packed with cone cells responsible for color vision and high-resolution vision in bright light, but it has very few rod cells, which are more sensitive and crucial for low-light vision. Looking slightly to the side allows the image to fall on areas of the retina that have a higher density of rod cells, improving the ability to see in dim light.

During Training for Night Combat, Soldiers Are Trained to Look