Conserving Vision An Essay On the Prevalence of Poor Eyesight And the Relations
Conserving Vision An Essay On the Prevalence of Poor Eyesight And the Relations
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In our eReader you can find the full English version of the book. Read Conserving Vision An Essay On the Prevalence of Poor Eyesight And the Relations Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Conserving Vision An Essay On the Prevalence of Poor Eyesight And the Relations
What reading level is Conserving Vision An Essay On the Prevalence of Poor Eyesight And the Relations book?
To quickly assess the difficulty of the text, read a short excerpt:
The light is very brilliant, however, and should always be covered with a good diffusing globe.
General Directions.
In reading or writing the light should never come from squarely in front, since this will produce a shine on the surface of the paper which not only irritates the eyes but blurs the vision. This is one of the worst faults in desk lighting. A desk lamp should never be placed in the middle of the desk, but well over to the left side, or the right side for left-handed people.
In read...ing always sit with the back towards the light or table. Writing or reading with the book on the table necessitates bending forward the head and chest, which seriously interferes with the proper action of the lungs and heart, which in the case of children may result in permanent deformity.
It is a common mistake to suppose that the brighter the light the better it is for fine eye-work. The amount, or intensity, of illumination must be varied according to the color of the objects seen. For reading or w r riting on white paper, or sewing on white goods, a compara- tively small amount of light is required, and too much light may produce a dazzling effect upon the surface.
What to read after Conserving Vision An Essay On the Prevalence of Poor Eyesight And the Relations?
You can find similar books in the "Read Also" column, or choose other free books by Douglas C Douglas Crawford Mcmurtrie to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The light is very brilliant, however, and should always be covered with a good diffusing globe.
General Directions.
In reading or writing the light should never come from squarely in front, since this will produce a shine on the surface of the paper which not only irritates the eyes but blurs the vision. This is one of the worst faults in desk lighting. A desk lamp should never be placed in the middle of the desk, but well over to the left side, or the right side for left-handed people.
In read...ing always sit with the back towards the light or table. Writing or reading with the book on the table necessitates bending forward the head and chest, which seriously interferes with the proper action of the lungs and heart, which in the case of children may result in permanent deformity.
It is a common mistake to suppose that the brighter the light the better it is for fine eye-work. The amount, or intensity, of illumination must be varied according to the color of the objects seen. For reading or w r riting on white paper, or sewing on white goods, a compara- tively small amount of light is required, and too much light may produce a dazzling effect upon the surface.
What to read after Conserving Vision An Essay On the Prevalence of Poor Eyesight And the Relations?
You can find similar books in the "Read Also" column, or choose other free books by Douglas C Douglas Crawford Mcmurtrie to read onlineMoreLess
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