Examination of the Eyes
Examine the eye in a mirror with the aid of a strong light. For visual acuity, pin the eye chart on a wall at eye level, and stand back a measured twenty feet.
Fig. 6. The eyes are called the windows of the soul. Our most valuable physical possession, they are much abused and can develop many severe diseases. Eye care is extremely important.
1. Closely scrutinize the inner and outer surfaces of the eyelid, the eyeball itself, and the clear surface of the cornea. Observe any particle, hair or other substance embedded anywhere as a foreign body in the eye.
2. Observe the clear cornea and white of the eye. There should be no redness, large blood vessels or milky growth
of tissue present. Presence of these findings may mean eye inflammation, or pterygium.
3. Note the pupils, both of equal size, become smaller in bright light and larger in dim light. Failure of such pupil action, or any unequalness of size, may mean infection or disease within the brain.
4. Fix the vision on a distant light, such as a street lamp, during the evening. The appearance of rings, visible around the light with a blurring of the light itself, may indicate glaucoma.
5. With the vision fixed on a lighted object, quickly close and open the eyelids several times. Continuous blurring or distortion of one particular portion of the eye field may indicate astigmatism.
6. At a distance of twenty feet from the eye chart, accurately measured, determine the lowest correctly read line for each eye with glasses off and on. The 20-20 line is considered perfect vision. Determine the smallest readable print on the hand chart of varying size print. Print size No. 1 is considered perfect.
