HOW DOES THE EYE RESEMBLE THE CAMERA? 153 



7. Do not use the eyes when they ache or when you are 

 fatigued. Remember that your eyes are the most valu- 

 able asset you have. Never abuse them. If tired, a 

 wash of boric acid will help. Do not use any patented 

 drops as they may contain dangerous poisons, and usually 

 you buy only boric acid and salt, which you could mix 

 yourself. Above all, consult a reliable oculist or eye 

 specialist in case your eyes need attention. 



SELF-TESTING EXERCISE 



Select from the following list those words which best Jill the blank spaces 

 in the sentences below and arrange them in proper numerical order. A 

 word may be used more than once. 



front reading image automatically 



back cornea bend accommodation 



side iris decreases glasses 



lens retina increases shaped 



mirror pupil curvature astigmatism 



harmful light focus enters 



beneficial diaphragm inverted farsightedness 



It is the (1) of the eye that produces an (2) on the 



(3) The amount of light which (4) the eye is regulated 



by the (5) which (6) and (7) the size of the 



(8) It is very (9) to have light directly in (10) of 



one when (11) Uneven (12) of the (13) or of the 



(14) may cause (15) In nearsightedness the image is in 



(16) and in farsightedness the image is in (17) of the retina. 



(18) to correct these defects may be (19) , so that they 



bend the rays of light to make them (20) properly. 



STORY TEST 



BEULAH'S FATHER Is AN OCULIST 

 Read carefully and critically. List all the errors and suggest corrections. 



My father is an oculist and fits people with glasses. I have 

 an uncle who is an optometrist; he treats diseases of the eye. 

 So you see I am just the one to talk to you about the human eye. 

 In the first place the eye is rounded or ball-shaped ; this makes it 



