1916] 



on Eyesight and the War 



699 



due to age, was made from 150 patients, and amongst these he owns 

 that he probably included some with latent hypermetropia. 



The following diagram was made by me from 1200 patients, all 

 of whom were rendered normal before their accommodation was 

 taken : — 



Fig. 2. 



The line on the diagram is Bonders' mean line, and it is seen to 

 coincide from the age of thirty with what would be my minimum line, 

 my mean line being considerably above it, showing that age for age 

 the individual has more accommodative power than Bonders allowed. 



The following table shows the minimum, mean, and maxi- 

 mum accommodative power for different ages, deduced from my 

 diagrams : — 



