Developing
Night Vision
Developing night vision teaches the reader how to train their eyes to be more
useful in the dark. Through excercises and techniques one can greatly improve their
ability to see in the dark. This guide will teach you all you need to know.
You can see much more in the dark than you realize. However, to take
maximum advantage of this ability, you must understand how your eyes are constructed and
how to use them to see best under conditions of poor visibility.
Your Eyes Are Like a Camera
Certain parts of your eyes compare to a simple camera.
a. The lens focuses light entering the eye just as does the lens of a camera.
b. The iris corresponds to the diaphragm of a camera, opening and closing to regulate
the amount of light entering the pupil.
c. The retina corresponds to the camera film. Light rays strike the retina, form an
image, and cause an impression to be transmitted to the brain through the optic nerve. The
brain tells us what we see. In a camera, the image is stored and fixed on film.
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