Access the full text.
Sign up today, get DeepDyve free for 14 days.
Abstract Aberrations of the anterior corneal surface can be recorded by an instrument based on the Placido principle, which has a number of advantages over the other instruments previously designed for this purpose. It is also possible to make measurements on the original film to determine by means of a graph the exact radius of curvature in any desired area. The construction of the apparatus is not complicated, its operation is simple, and the results highly reproducible. References 1. Placido A: Novo instrumento de esploracro da cornea: Astigmatoscoio explorado . Period Ophtha Prat Lisb 2:27 2. 6:44, 1880. 3. Hansell P: A System of Ophthalmic Illustration . Springfield, Ill, Charles C Thomas Publisher, 1957, pp 69-70. 4. Amsler M: Ueber Photo-Keratoscopie . Ber Deutsch Ophthal Ges 48:202-209, 1930. 5. Fincham EF: The photo-keratoscope . Med Biol Illus 3:87-93, 1953. 6. Donaldson DD: A new camera for medical stereophotography with special reference to the eye . Arch Ophthal 52:564-570, 1954.Crossref 7. Westheimer G: A method of photoelectric keratoscopy . Amer J Optom 42:315-320, 1965.Crossref 8. Westheimer G, Felsenstein L: Automatic photoelectric keratometer . J Opt Soc Amer 56:807-810, 1966.Crossref
Archives of Ophthalmology – American Medical Association
Published: Oct 1, 1972
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.