nutting: chromatic aberration of human eye 



387 



660, all eyes show less variation in focal length than an equivalent 

 eye of pure water would have. In some eyes the correction in the 

 central region would compare favorably with that of a good photo- 

 graphic or telescopic objective. 



TABLE 1 

 Accommodation co 



SUBJECTS 



Several types of correction are shown that are new to lens optics. 

 The high order central corrections of L. A. J. and P. G. N. are 

 accompanied by decreased violet but normal red correction. 

 L. E. J. shows no correction except in the extreme red and violet 

 where the correction is normal. M. B, H. is slightly corrected 

 except in the extreme regions. C. H. B. is fairly well corrected 

 over a wide region from 480 to 780. 



