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Tests for Color Blindness
376
OPHTHALMIC SECTION, A. M. A.
OPHTHALMIC SECTION, A. M. A. The largest annual meeting of ophthalmologists held anywhere in the world is that of the Section on Ophthalmology of the American Medical Association. This year when its chief rivals are all more immediately under the adverse influence of the war, its supremacy will be more striking than usual. The place of meeting, Chicago, the headquarters of the Association, within an easy journey of the great majority of its members, favors a good attendance ; and a good series of practical subjects will be presented for discussion. The local arrangements include five days of clinics extending from June 6th to June 11th. Besides its undergraduate and graduate medical schools, every large hospital and dispensary in the city has its ophthalmic department, which will be utilized to the full to provide instruction and entertainment for those who come to attend the meeting. The announcement of detailed plans will be found in the Journal of the A. M. A. If for no other reason, any ophthalmologist would be justified in going to considerable expense and inconveni-" ence to attend the meeting and get his name on the register of Section members, in order that he might receive from year to year the presession volu m e o f papers to be presented to the Section. The section headquarters and meeting place will be at the Hotel La Salle. BOOK NOTICES. TESTS FOR COLOR BLINDNESS, by Dr. Shinobu Ishihara, Major, I. J. A. M, C , Tokyo, Japan. Sixteen colored plates with explanatory text. Tokyo, 1917. Dr. Ishihara, who is instructor at the Military Medical Academy in Tokyo, has produced something novel in the way of tests for color blindness. They are the working out of a plan to which he first called attention in the Nippon Gankwa Zasshi (Journal of Japanese Ophthalmologists) in 1916. Each test is a plate of colored circles of various sizes. Part of these circles are of va-
rious shades and tints of one color constituting a figure; while the remainder are shades and tints of a color that is a confusion color for the first, and which form a background for the.figure. On most of the plates it is easy for the eye with normal color perception to see the figure against the background ; but the color blind fail to perceive it. On a few, the coloring is such that the figure is more readily perceived by the color blind than by the normal sighted; and there is one plate on which the figures are equally well perceived by both. The explanation and directions ,are given in English and also in Japanese. The work is a positive addition to our resources for the study of normal and defective color perception. E. J. STATE LEGISLATION CONCERNING T H E EXE, by Frank Allport, M. D., LL.D., of Chicago. 8vo, 552 pages. Riddle & Wunderle Company, Chicago, 111., 1917. This volume includes a series of articles published in Ophthalmology in July, 1915, to July, 1917, to which has been added a brief preface. It is about as good and up-to-date a presentation of its subject as we can conceive possible; although, as the author points out, since the first article was printed, some legislatures have met and passed laws relating to the eye. It is arranged according to the subjects of legislation as follows: "Examination of School Children's Eyes, Ears, Noses and Throats," laws in 17 states, 27 pages. "Legislation Concerning Ophthalmia Neonatorum in 31 States," 51 pages. "Legislation Concerning Trachoma," special laws in 8 states, classing it as a contagious disease in 23 states, total 31 states, 17 pages. "Legislation Concerning Wood Alcohol," 31 states, 34 pages; "Concerning Shop Lighting," 14 states; "Accid e n t s , " 22 states; "The Common Towel," 16 states; "Conditions of Labor Compensation," etc., 15 states; in all, 60 pages.
OPHTHALMIC SECTION, A. M. A.
OPHTHALMIC SECTION, A. M. A. The largest annual meeting of ophthalmologists held anywhere in the world is that of the Section on Ophthalmology of the American Medical Association. This year when its chief rivals are all more immediately under the adverse influence of the war, its supremacy will be more striking than usual. The place of meeting, Chicago, the headquarters of the Association, within an easy journey of the great majority of its members, favors a good attendance ; and a good series of practical subjects will be presented for discussion. The local arrangements include five days of clinics extending from June 6th to June 11th. Besides its undergraduate and graduate medical schools, every large hospital and dispensary in the city has its ophthalmic department, which will be utilized to the full to provide instruction and entertainment for those who come to attend the meeting. The announcement of detailed plans will be found in the Journal of the A. M. A. If for no other reason, any ophthalmologist would be justified in going to considerable expense and inconveni-" ence to attend the meeting and get his name on the register of Section members, in order that he might receive from year to year the presession volu m e o f papers to be presented to the Section. The section headquarters and meeting place will be at the Hotel La Salle. BOOK NOTICES. TESTS FOR COLOR BLINDNESS, by Dr. Shinobu Ishihara, Major, I. J. A. M, C , Tokyo, Japan. Sixteen colored plates with explanatory text. Tokyo, 1917. Dr. Ishihara, who is instructor at the Military Medical Academy in Tokyo, has produced something novel in the way of tests for color blindness. They are the working out of a plan to which he first called attention in the Nippon Gankwa Zasshi (Journal of Japanese Ophthalmologists) in 1916. Each test is a plate of colored circles of various sizes. Part of these circles are of va-
rious shades and tints of one color constituting a figure; while the remainder are shades and tints of a color that is a confusion color for the first, and which form a background for the.figure. On most of the plates it is easy for the eye with normal color perception to see the figure against the background ; but the color blind fail to perceive it. On a few, the coloring is such that the figure is more readily perceived by the color blind than by the normal sighted; and there is one plate on which the figures are equally well perceived by both. The explanation and directions ,are given in English and also in Japanese. The work is a positive addition to our resources for the study of normal and defective color perception. E. J. STATE LEGISLATION CONCERNING T H E EXE, by Frank Allport, M. D., LL.D., of Chicago. 8vo, 552 pages. Riddle & Wunderle Company, Chicago, 111., 1917. This volume includes a series of articles published in Ophthalmology in July, 1915, to July, 1917, to which has been added a brief preface. It is about as good and up-to-date a presentation of its subject as we can conceive possible; although, as the author points out, since the first article was printed, some legislatures have met and passed laws relating to the eye. It is arranged according to the subjects of legislation as follows: "Examination of School Children's Eyes, Ears, Noses and Throats," laws in 17 states, 27 pages. "Legislation Concerning Ophthalmia Neonatorum in 31 States," 51 pages. "Legislation Concerning Trachoma," special laws in 8 states, classing it as a contagious disease in 23 states, total 31 states, 17 pages. "Legislation Concerning Wood Alcohol," 31 states, 34 pages; "Concerning Shop Lighting," 14 states; "Accid e n t s , " 22 states; "The Common Towel," 16 states; "Conditions of Labor Compensation," etc., 15 states; in all, 60 pages.