By Neal H. Atebara, MD
Discusses present functions of optical phenomena, together with the optical foundations of lasers, spectacles, IOLs and refractive surgical procedure. provides optics of the human eye; uncomplicated strategies of geometric optics; ophthalmic tools and call lenses. Discusses imaginative and prescient rehabilitation from the epidemiology of imaginative and prescient impairment, type of visible functionality deficits, sufferer evaluation and occasional imaginative and prescient administration. final significant revision 2009 2010.
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Additional info for 2011-2012 Basic and Clinical Science Course, Section 3: Clinical Optics (Basic & Clinical Science Course)
Mirrors produce images in much the sam e way as le nses (Fig 2-6). The comments made in this section regarding lenses also apply to mi rrors. Most optical systems are rotationall y symmetric about their long axis. This ax is of sym metry is the optical axis (see Figs 2-5 and 2-6). Althoug h the human eye is not tru ly rotati onally symmetric, it is nearly symmetri c, and theoretical models of the eye often approximate the eye as a rotationally symmetric system. ) Object Characteristics Objects may be characteri zed by their location with respect to the imaging system and by whether they are lumino us.
Campbell CJ. Physiological Optics. Hage rstown, MD: Harper & Row; 1974. Rubin ML, Walls GL. FUlldamelltals a/Visual Sciellce. Springfield, IL: Charles C Thomas; 1969. CHAPTER 2 Geometric Optics Geometric optics is the study of light and images using geometric principles. In contrast, physical optics emphasizes the wave nat ure of light, and quantum optics (not covered in this text) emphasizes the particle nature of light and the interaction of light and matter. Geometric optics uses linear rays to represent the paths traveled by light.
If a pencil of light is reduced to a single ray, it is reflected and transmitted specularly by a rough interface. Specular Reflection: law of Reflection In specular reflection, the direction of the reflected ray bears a definite relationship to the direction of the incident ray. To express a precise relationship between incident rays and reflected rays, it is necessary to construct an imaginary line perpendicular to the optical interface at the point where the incident ray meets the interface. This imaginary line is a surface normal (Fig 2-19).
2011-2012 Basic and Clinical Science Course, Section 3: Clinical Optics (Basic & Clinical Science Course) by Neal H. Atebara, MD