Short Sight, Long Sight and Astigmatism: An Elementary Guide to the Refraction of the Eye (Classic Reprint)
Language: English
Published by Forgotten Books, 2019
- Hardcover
- New

Seller: PBShop.store US, Wood Dale, IL, U.S.A.PBShop.store US
AbeBooks seller since April 7, 2005
Condition: New
US$ 40.65
Quantity: 15 available
Add to basketItem description from seller
New Book. Shipped from UK. Established seller since 2000.
Seller Inventory # LX-9780260018441
- Title
- Short Sight, Long Sight and Astigmatism: An Elementary Guide to the Refraction of the Eye (Classic Reprint)
- Author
- George Frederick Helm
- Publisher
- Forgotten Books
- Publication year
- 2019
- Condition
- New
- Binding
- HRD
- Language
- English
- ISBN 10
- 0260018449
- ISBN 13
- 9780260018441
- Item weight
- 413 grams
Explore how the eye bends light and how common vision errors are understood and corrected.
This classic, elementary guide explains the basics of refraction in clear language. It covers how light behaves, accommodation, and the main refractive errors: myopia, hypermetropia, and astigmatism. The text also introduces lenses, prisms, and cylindrical lenses, with practical ideas for correcting faulty vision.
- How parallel and diverging light rays form images on the retina
- Differences between myopia, hypermetropia, and astigmatism
- How convex and concave lenses alter vision and nodal points
- How cylindrical lenses correct astigmatism and the role of axes
"Synopsis" may belong to another edition of this title.
PBShop.store US
Wood Dale, IL, U.S.A.
AbeBooks seller since April 7, 2005
Shipping rates within U.S.A.
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Hardbacks, PaperbacksSeller's business information
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