New England College of Optometry - Scope Yearbook (Boston, MA)

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Mfr cf-W'J ,Zi Your professional standing . . . your future . T P. are reflected in your ofiice. Professional offices of the future must satisfy definite and exacting standards. They should be simple, modern, functional. . . with every instrument in proper place for efficient service. They should reflect good taste and characterize Professional Services. New standards call for planning . . . creative planning that requires specialized skills and expert advice. In 1924 American Optical Company recognized this need and established the AO Ofiice Planning Service. The AO Office Planning Service, with its wealth of infor- mation and practical experience, is at your service . . . without charge or obligation. Yom' own particular requirements will be analyzed, plans drawn and color schemes suggested. AO Ofiice Planning Service considers all details, suggests additional equipment, if necessary, for complete modernization. Your AO representative will be glad to furnish additional information on Ofiice Planning Service at your request.

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READY for IMMEDIATE DELIVERY QE .I are tl 5fi'i1ff3f'5I-V f ' 9 .- PS'-5A'3?EXv'.,1. 3522: V 'Ml ' . w -ncaa' V5 .4 ,.-Ea ,, I, if, iii -if-gglj-ing ii... i A ,ix , -Ni. . . 13, n P71 ' i s f: ,f .. ff- nfl' if-Q-Ili? . 3 .xy 5.0 'silt 3 -:QE 3 5 the SHURCN 82-A ALL SHAPE CUTTER Check these superior features: 0 Precision built for accuracy. 0 Positive lens grip Cboth top and bottomj for truer cutting and minimum breakage. O Unobstructed overhead view. 0 Automatic adjustment of cutting wheel angle. 0 Over 4000 in use. The Best Rx Work Is Done on Shuron Machinery Shawn onronfrmc DATHDLDGLY Artbzn' O. Brute, 1lI,D. Photophobia Photophobia is not a disease of the eye, but rather a sympton. lt should never be set down as a diagnosis. The name of this very common condition means fear of light . In patients complaining of it we should look especially for the follow- ing: a. Widely dilated, unprotected pupils b. Hysteria c. Inflammation of the cornea d. Inflammation of the uveal tract e. Inflammation of the retina f. Inflammation of the optic nerve Photophobia may vary from a slight sensa- tion of dazzling to a real pain. The condition may be accompanied by epiphora, blepharo- spasm, or sneezingg these are usually reflexes formed by the facial nerve for blepharospasm and probably for epiphorag and by the motor nerves of respiration for sneezing. Another part of the reflex is either the ophthalmic division of the trifacial, or the optic nerve. In treatment of these conditions we must consider the pathology. In the phlyctenular affections of the conjunctiva and cornea, we may use dionin solution to bring about marked chemosis, or Bier's treatment with a suction apparatus. The relief is probably brought about by the edematous inhibition of the tissues act- ing as a local anesthetic on the nerve endings in the cornea. In cases where the optic nerve acts as part of the reflex, pain may be felt on exposure to very bright light because of the pull on the fibers of the iris by the strong contraction of the pupil. This has been demonstrated in these cases by dilating the pupil with homatropin and relieving the condition. Here, although the amount of light admitted was greater, there was no pain because the pupil could not contract. fPleaJe ffzwz fo page 14D Page Efefzwz

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A Light That Failed Ultraviolet-Sensitive Eyes Foiled Navy Wartime Plan A recent release from the American Optical Company tells of an ingenious though unsuc- cessful scheme, in which they had a share, worked out during the late war for enabling our aircraft to land on carriers with visibility in darkness. The scheme, which appeared theoretically perfect, was to mount on the aircraft an ultra- violet transmitting searchlight, and to outline the carrier with devices consisting of a fluores- cent button in a spherical reflector, with a special correcting lens capable of transmitting both visible and invisible light? The invisible ultra-violet light from the airplane would pass through the lens and be focused on the button, which would thereon emit a brilliant Huores- cent visible light. The complex curves of the lens would then collect the rays diffused by the mirror, and return them to the landing plane as visible light in so narrow a beam that it would be only a few feet wide after traveling a mile. Thus an enemy pilot, even if he were flying wing-to-wing with an American about to land, would not detect the presence of the carrier, but to our pilot it would be clearly outlined. Tests disclosed, however, that although the limit of visible light was believed to be about 400 millimicrons, some human eyes are able to detect, in full darkness, light of the wave- length fabout 300 millimicronsj emitted by the searchlight. This meant in effect that al- though a carrier using this device would not be exposing itself to an enemy pilot, a plane using the ultra-violet searchlight would be ex- posing itself to attack by any hostile plane whose pilot happened to have such eyes. Con- sequently, the scheme had to be abandoned. ' The glass for the lens was developed in the A. O. research laboratoriesg the reflector at the U. of Rochester. See More, More Clearly For superior standards of bifocal performance and comfort we suggest the Ultex K. K's onepiece construction contributes single vision lightness to a lens giving sharp, clear vision from edge to edge of both reading and distance portions. The straight top segment design virtually eliminates jump of image. , Ultex K is available in clear and four tints. WILSON 8a HALFORD OPTICAL COMPANY 387 WASHINGTON STREET BOSTON 8, MASS. Page Tfairteezz