CX BOWMAN LECTURE. 



3 all died young, and IV, 6 all dead at record; IV, 9 

 (author's Case 8) affected ab'out same age as IV, 1 and 4, 

 seen at 25, improved very decidedly 2 to 3 years after 

 onset. In III, 1 there was interval of 8 years between 

 the two eyes, E. before L. ; and in III, 8 between 2 and 

 3 years, R. before L. All the five affected ones in III 

 had pterygium. 



In respect to prognosis, the chance of recovery has, 

 I think, been put too low how much too low it is 

 impossible to say. There do not seem to be any signs by 

 which we can forecast the future for a given attack ; but 



Fig. 51 



with our present knowledge I am sure we not only may, 

 but should, speak hopefully about any case seen within 

 a couple of years from the onset or even longer. I 

 find records of at least 25 affected persons (22 males, 

 3 females), in 16 genealogies who recovered either perfect 

 or quite useful central vision; and minor degrees 

 of improvement are probably rather common.*" Most 

 of these recoveries took place between the ages of 20 

 and 30, viz., at the period when the disease is most 

 frequent; but 2 were in children. In the same 

 genealogy and even in the same sib ship some may 

 recover and others not : thus in Hancock's recent remark- 

 able case (Fig. 47), 6 recovered out of 12 attacked; in 

 * Appendix VI, I. 



