Poor illumination produces ocular symptoms. The ophthalmologist is frequently consulted with regard to these symptoms, and he should be able to recognize and treat them effectively. He should, in addition, be prepared to do his part in preventing, as well as in ameliorating, conditions which might cause such symptoms.
The scope of such activities may vary from simple, obvious advice to full scale cooperation with the illuminating engineer, the architect and the decorator. With his understanding of individual differences and needs, his freedom from commercial bias and his awareness of the part played by good lighting in the comfort and welfare of the eyes, the ophthalmologist occupies an important position in this phase- of public health service. The purpose of this brief report is to outline the basic facts and principles of good lighting so that the ophthalmologist may be well guided in his individual or cooperative efforts to alleviate