The mechanism of accommodation and presbyopia
By: by Ronald A. Schachar
Publisher: Kugler Publications
Published: 2012
Place of publication: Amsterdam
Language: eng
Number of pages: 265
ISBN-13: 9789062992331
Subjects: Crystalline Lens; Physiopathology; Presbyopia; Ocular Accommodation; Physiology
Description: The human eye is a remarkable optical device. In less than a second, a young human eye can accommodate from infinity to closer than 10 cm. Accommodation occurs with minimal effort and can be rapidly repeated with no apparent evidence of fatigue. Unfortunately, maximum accommodation decreases throughout life and by the fifth decade leads to presbyopia, the inability to read at a normal working distance. Interestingly, the mechanism by which the human eye is able to adjust focus has been debated for over 300 years. No previous theory has been put forth that can account for all the physical chang.
Notes: Includes bibliographical references and index.
Table of contents: title: 1. History of Accomodation and the Steep Profile; title: 2. Mechanism of Accomodation; title: 3. Aspect Ratio of Vertebrate Lenses Predicts Accommodative Amplitude; title: 4. Anatomy and Physiology; title: 5. Experimental Evidence; title: 6. Mathematical Modeling of Accommodation; title: 7. Presbyopia and Age-related Ocular Hypertension; title: 8. Importance of Controlled Studies; title: 9. The Steep Profile: A Fundamental Structure in the Universe; title: 10. Summary.