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Home > Art, Film & Photography > Ophthalmic Equipment: Instruments Used in Ophthalmology, Tonometry, Gonioscopy, Lens Clock, Keratometer, Fundus Camera, Ophthalmoscope
Ophthalmic Equipment: Instruments Used in Ophthalmology, Tonometry, Gonioscopy, Lens Clock, Keratometer, Fundus Camera, Ophthalmoscope

Ophthalmic Equipment: Instruments Used in Ophthalmology, Tonometry, Gonioscopy, Lens Clock, Keratometer, Fundus Camera, Ophthalmoscope


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About the Book

Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Instruments Used in Ophthalmology, Tonometry, Gonioscopy, Lens Clock, Keratometer, Fundus Camera, Ophthalmoscope, Pascal Photocoagulator, Phoropter, Autorefractor, Retinoscopy, Pupilometer, Focometer, Slit Lamp, Lensmeter, Eye Chart, Automated Refraction System, Vertometer, Keratoscope, Penlight, Ophthalmic Instrument, Opththalmic Instrument. Excerpt: An automated refraction system is a group of ophthalmic devices used during an eye examination to aid in the determination of a person's refractive error and prescription for glasses or contact lenses . The standard components of an automated refraction system are: Automated refraction systems currently on the market vary in features, level of automation, ease of use, training required and documentation. Some systems contain automatic detection and compensation of common refraction issues such as accommodation and "over-minusing." An automated refraction is quick and painless. Some advantages of automated refraction systems vs. manual refraction equipment are: Websites (URLs online) A hyperlinked version of this chapter is at An autorefractor or automated refractor is a computer-controlled machine used during an eye examination to provide an objective measurement of a person's refractive error and prescription for glasses or contact lenses . This is achieved by measuring how light is changed as it enters a person's eye. The automated refraction technique is quick, simple and painless. After application of a cycloplegic agent to keep the ciliary muscle in relaxed position and avoid the erroneous diagnosis of a pseudomyopia, the patient takes a seat and places their chin on a rest. One eye at a time, they look into the machine at a picture inside. The picture moves in and out of focus as the machine takes readings to determine when...


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Product Details
  • ISBN-13: 9781155236452
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • Sub Title: Instruments Used in Ophthalmology, Tonometry, Gonioscopy, Lens Clock, Keratometer, Fundus Camera, Ophthalmoscope
  • Width: 229 mm
  • ISBN-10: 1155236459
  • Publisher Date: 02 May 2010
  • Binding: Paperback
  • Spine Width: 5 mm
  • Weight: 122 gr


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