Hints On The Care Of The Eyes

There are, perhaps, more individu] wlio ascribe their weakness of sight to a use of their eyes under an insuffieient artificial illuuiination than to unv one other canse. In a great many instances this may not be strietly tnio, but there eau be no doubt that fau!ty artificial lightisone oi' the most jroduetive causes of a certain class of injuries to whicli the eye can bo exposed. Vlie two sources of trouble with the ordinary artificial lights aro - first tliat they are not pure white, and seoond, that they are ur,steady. The first defect is found in ail artificial light.sexeept the lime, electric aud magnesium lights ; the second especially in candles and gas. The yellownes.s is, in a measure, counteracted by using, in tbe case of lampa and pas, olrimneys of a voiletor blue tint, and the rlickering of the pas rmy be obviated largely by applying an Arga&d burner. The chimneys of' both may, ia above suggested, be advantageously of a light blue tint. The position of tho light in relation 1 1 the body is of great inportance. If shade is used on the lamp or burner (il should, by preference, be of ground or " milk " glass, never of colored glass) tbe light may stand directly in front of the body and the work be allowed to lie in the light under the shade, which will proteet the e)'es j'rom the gliire of the flame. If no shade is used the back should be turned to the source of light, which ought to f 't II over the left shoulder. The .ame rule applies in the management of dayligl.t. Iii this ca-ie tbe light should come froin bebind and ulightly above, and fitll direct y on the work, whencs i 'u rnfleced to the eyes. It should never fall direcily in the face. The light in the room during sleep is alao not without its inSuence. During bleeping bours the roum should be dark ; and, in particular, care should be taken hl to avoid sleeping opposite a wiodow, where on opening the eyes in the morning, a flood of strong light will fall on tuem. Even the strongest eyes are, after the repose of the niglit, more or lesa sensitive to the impressions of intense light. The eyes tuu-t have time to accustom theuiselves to the (timalofu, Attnntion should be called to the njuu ous effects that somedniea folluw reading on railroad cars. On account of the unsteadiness of the page, reading undor these circumstances i exceedingly trying to the eyes, and should never be persisted in for any considerable length of time. Buring convalescence the eyes are generally the last to regain their lost power, tispecially is this the case wiih women after childbirth, and too much care cannot be taken to put as little strain upon the eyes a.s possible at this time.