CHAPTER XVI 

 IMPORTANCE OF OUR EYES 



Problems. i. To see how the eye resembles a camera 

 in structure. 



2. To find out what colors are. 



3. To learn what the common defects of the eye are and how 

 to remedy them. 



4. To find out the defects of my own eyes. 



5. To learn rules for proper care of the eyes. 



Experiments and demonstrations. i. To show how the pupil of the 

 eye changes size in looking from a dark room toward a strong source of 

 light. 



2. To test my own eyes for defects. 



Project I. To REMEDY ANY EYE DEFECTS YOU MAY HAVE. 



1. Have a competent person test your eyes for astigmatism, near- 

 sight, farsight, and color blindness. You can tell if you have eye- 

 strain. 



2. Remedy any serious defects. 



3. Explain the science involved in the eye defect and in the appli- 

 cation of the remedy. 



How we see. One of the saddest results of the World 

 War is seen in a hospital where men blinded by gas or 

 other causes grope their way around in somber darkness. 

 How we pity them ! The loss of sight would be one of the 

 most terrible things that could happen to us. Then why 



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