Show EFFECTS OF INTENSE LIGHT rhey are not mot so serious V ien tho the amount received by the tha retina Is reduced it Is not so much the intensity ot of the light focused on the retina as it la Is the quantity received by that sensitive sensitiva 6 organ that causes retinal fatig fatigue tie or worse in the great snow fields of tha arctic regions the natives protect their yes eyes from the glare of the snow by goggles mado made of hollowed hallowed pieces ot of wood la in which they have made small holes to look through this says the optical review iw reduces the quantity of tho the light which into their eyes with consequent relief relict from the glare so too if we look through a minute pinhole disc nt at the sun we can endure the very bright light much longer than when we look with the naked eye n we look at a distant electric are arc light there Is no retinal fatigue while if we wa look at the same light from a short abort yet the two retinal images aro are of equal bril brilliancy lancy only in the first case this image ta Is very much smaller than in the second case that la is the quantity tr of I 1 light I 1 Is very much different then there la in the flaming electric light which wh ach la Is now naw to ro be found in all of the larghi cities of the country this light to Is much less brilliant than that of the are arc light and yet its size Is so great that this more than makes up the difference and it te is therefore very err glaring and uncomfortable to look at in it Is possible to use avery a very intense light it if it to Is made small mall in area and for the reasons 1 abafo totted io gg r TV i fi f i r A |