. The Ontario public school hygiene . hings learned throughthe eye, becomes lost,and with this is lost FlQiRB 83.— Front to back section of the eye The U r +1 outer coat of the eye is the sclerotic ; inside this mUCn OI tue perSOn S is the choroid coat, the innermost one is the . , 11 • retina—the spread-out end of the optic nerve, front covering of the eye is the cornea. The coloured part is the iris, and the circular opening Seeino then meaUS in the iris is the pupil _ ^ that objects outside ofus start messages from the back part of the eye, and thatthese travel along the ner
. The Ontario public school hygiene . hings learned throughthe eye, becomes lost,and with this is lost FlQiRB 83.— Front to back section of the eye The U r +1 outer coat of the eye is the sclerotic ; inside this mUCn OI tue perSOn S is the choroid coat, the innermost one is the . , 11 • retina—the spread-out end of the optic nerve, front covering of the eye is the cornea. The coloured part is the iris, and the circular opening Seeino then meaUS in the iris is the pupil _ ^ that objects outside ofus start messages from the back part of the eye, and thatthese travel along the nerve-fibres until they reach thearea of the brain which is concerned in seeing. Here isstored the memory of all sights, places, and things whichwe have seen. In this part of the brain we learn torecognize printed and written words, and then to is probably this area also that becomes highly trainedin the artist, so that he can recognize subtle differencesin light, shadow, colour, and form which untrained peoplecan not THE SENSE OF SIGHT 203 If the eye is not perfect, then a childs education maybe delayed ; because wrong messages or imperfect mes-sages may reach the area for sight and wrong impressionsbe formed in the childs mind. Hence, every childs eyesshould be examined and his sight tested by the parent,the teacher, or a physician. So much for the structure of the eye and its connec-tion with the brain; now as to its care. If you have headaches in school, often toward thenoon hour or toward four oclock in the afternoon,they are likely to be due to some trouble in the course, this is not always the case. The trouble maylie in some other part of the body ; but it is always safest,when troubles like these are noticed, to have a doctorexamine the eyes and find out what is wrong. You must be careful not to catch any disease of theeyes from other persons. There are some bad diseasesof the eyes that may be caught by using water, towels,or handkerchiefs that
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