The eye is of such supreme importance to man in the conduct of his daily life, and its mechanism is so delicate in its structure and adjustments, that it is quite naturally regarded as peculiarly susceptible to all sorts of offending agencies and exposed to a myriad of unsuspected dangers. Many of these fears and beliefs are well grounded. Some of them, on the other hand, have led to unwarrantable conclusions. Certain of the modern illuminants have acquired the reputation, in a somewhat popular way, of being dangerous by reason of injurious effects of the ultraviolet radiation delivered by them.
Drs. Verhoeff and Bell1 of Boston have just published a preliminary summary of an extensive investigation of the effects of radiation on the various mediums of the eye from the corneal epithelium back to the retina. This work deserves careful study because they have properly emphasized the quantitative aspect