Have the volunteer stand be eye chart. Have the volunteer cover one eye while he

Question

Have the volunteer stand be eye chart. Have the volunteer cover one eye while he/she tries to read the letters on each successively smaller line. The last line that can be read without any mistakes identifies the visual acuity for that eye. . hind the tape on the floor that is 20 feet away froli Record your visual acuity below. . Right eye 2dd Left eye sharp focus diameter of the pupil and the position of the eyebals also play a role in creating a sharp focus for the eyes . Have a volunteer focus on a distant object at least 20 feet away. Then notice the change in pupil diameter and the inward movement of the eyeballs as the volunteer focuses on a pencil 10 inches in front of his/her nose. 6. Which extrinsic eye muscle is involved in the convergence of the eyeballs? . What area of the retina do you want the image of the pencil to stimulate for visual acuity and how does this relate to the convergence of the eyeballs?

Explanation / Answer

Question 7-

In retina, the posterior part is requiring to get high visual acuity. This part contains rods, cones, and calls as the retinal pigment epithelium. Distant vision the eyeball need to converge wider to collect more light while in near vision it is opposite. It does not correlate directly with visual acuity.

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