2008-2009 Basic and Clinical Science Course: Section 3: by Kevin M. Miller, MD PDF

By Kevin M. Miller, MD

ISBN-10: 1560558768

ISBN-13: 9781560558767

Offers present functions of optical phenomena, together with the optical issues concerning foundations of lasers, spectacles, IOLs, and refractive surgical procedure and the layout, becoming, and issues of touch lenses. additionally lined are optics of the human eye, the layout and use of ophthalmic tools, uncomplicated strategies of geometrical optics and the present method of low imaginative and prescient administration and imaginative and prescient rehabilitation.

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2008-2009 Basic and Clinical Science Course: Section 3: - download pdf or read online

Provides present functions of optical phenomena, together with the optical concerns regarding foundations of lasers, spectacles, IOLs, and refractive surgical procedure and the layout, becoming, and problems of touch lenses. additionally lined are optics of the human eye, the layout and use of ophthalmic tools, uncomplicated techniques of geometrical optics and the present method of low imaginative and prescient administration and imaginative and prescient rehabilitation.

Additional info for 2008-2009 Basic and Clinical Science Course: Section 3: Clinical Optics (Basic and Clinical Science Course 2008-2009)

Example text

The wavelength specificity of a laser greatly exceeds the absorption specificity of pigments in tissues. In addition, monochromatic light is not affected by chromatic aberration in lens systems. Thus, monochromatic light can be focused to a smaller spot than can white light. 18 . Clinical Optics Oirectionality The second property of laser-emitted light is directionality. Lasers emit a narrow beam that spreads very slowly. As explained later in this chapter, lasers amplify only those photons that travel along a very narrow path between 2 mirrors.

After being adjusted for the working distance, the subject's retina is conjugate with optical infinity (Fig 2-2C). ) Another example of conjugacy is demonstrated by direct ophthalmoscopy. After being compensated for the refractive errors of the eyes of the examiner and subject by dialing an appropriate working lens into the ophthalmoscope, the 2 retinas are conjugate (Fig 2-3). Because light entering the subject's eye is intense and distracting, and little light illuminates the inside of the examiner's eye, the subject cannot see the examiner's retina.

In this illustration, an object point. 0, on the wick, and its conjugate, I, are used to measure object and image height. (Illustration developed by Edmond H. Thall. MD. and Kevin M Miller. MO, and rendered by C. H. ) CHAPTER 2: Geometrical Optics. 31 To calculate transverse magnification, any off-axis object point and its conjugate image point may be used. Object and image heights are measured perpendicularly from the optical axis. By convention, object or image height is considered positive when the point is above the optical axis and negative when the point is below the axis.

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2008-2009 Basic and Clinical Science Course: Section 3: Clinical Optics (Basic and Clinical Science Course 2008-2009) by Kevin M. Miller, MD


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