242 THE WONDERFUL HOUSE THAT JACK HAS 



body, are weak. If, when in this condition, the 

 eyes are given the extra strain that naturally at- 

 tends school work, they may easily be permanently 

 injured. 



From every standpoint it is far better for weak, 

 sickly children to postpone entering school until they 

 become well and strong. The time lost by so doing 

 will soon be made up, and they will not be crippled 

 for life by weakness of the eyes. Many people with 

 painfully weak sight could trace it either to reading 

 while recovering from some illness, or to entering 

 school when they were weak, sickly children. Girls 

 sometimes injure their eyes by doing needle-work on 

 dark materials by artificial light. Such work is very 

 trying to the eyes, and should be done only by day- 

 light. Another practice of the feminine sex that may 

 prove injurious is that of wearing veils, especially 

 those that are thick or spotted. Surely few will 

 dispute that anything in the way of style or appear- 

 ance gained by wearing such articles would indeed 

 prove costly, if it injured in the least the precious 

 power of seeing. 



In a previous paragraph the importance of screening 

 the eyes from the glare of intense light was mentioned. 

 One should take special pains not to expose his eyes 

 to a very bright light after having been in darkness, 

 for, in spite of the contraction of the pupils, severe 

 injury and even blindness have been known to follow. 

 Sometimes it is necessary to adjust a very bright light, 



