Results 161 to 170 of about 13,796 (222)
Comparison of two ophthalmoscopes for direct ophthalmoscopy
Clinical and Experimental Ophthalmology, 2010 Background: To measure the ease of use and performance of the Optyse(TM) Lens Free Ophthalmoscope compared to the standard Keeler Pocket Ophthalmoscope, and to assess its suitability as an inexpensive ophthalmoscope for medical students.
N. Mandal +6 more
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Veterinary Ophthalmology, 2023
PURPOSE To investigate bacterial contamination of indirect ophthalmoscopes and condensing lenses used in three UK veterinary referral centers, and the impact of an implemented cleaning protocol.
James L Smith +4 more
semanticscholar +1 more source
PURPOSE To investigate bacterial contamination of indirect ophthalmoscopes and condensing lenses used in three UK veterinary referral centers, and the impact of an implemented cleaning protocol.
James L Smith +4 more
semanticscholar +1 more source
Field of view of portable ophthalmoscopes for smartphones
Defense + Commercial Sensing, 2019People with diabetes are at high risk of diabetic eye disease such as diabetic retinopathy (DR) which is the most common cause of vision loss. It is caused by damage to the small blood vessels in the retina. If untreated, it may result in varying degrees
Recep E. Hacisoftaoglu, Mahmut Karakaya
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Comparison of the efficacy of three direct ophthalmoscopes: a clinical study
Current Developments in Lens Design and Optical Engineering XX, 2019Retinal examination using direct ophthalmoscope is preferred over other techniques for screening purposes because of its portability and high magnification, despite its power sustainability and cost issues.
Mohana Kuppuswamy Parthasarathy +3 more
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Spectral irradiances of and maximal permissible exposures to two indirect ophthalmoscopes.
American Journal of Optometry and Physiological Optics, 1983Recent reports in the literature have indicated that exposure to certain high intensity sources used in clinical procedures may be damaging to the retina.
J. Kossol, C. Cole, P. Dayhaw-Barker
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The history of the ophthalmoscope
Documenta Ophthalmologica, 1989If one were living in 1849 and suffered a central retinal artery occlusion and were examined by the most eminent ophthalmologist of the day, the only diagnosis could be amaurosis or amblyopia. Why? Because visualization of the retina in vivo was still one year away.
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On the invention of the ophthalmoscope
Documenta Ophthalmologica, 1994The author offers an English translation of three passages of Purkinje's Commentatio de examine physiologico organi visus (1823). He shows that Purkinje made three inventions: (1) by using a transparent mirror, (2) by anticipating Maxwellian illumination, and (3) by providing the first recorded ophthalmic examination of animal and human eyes.
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The Origin of the Ophthalmoscope
Ophthalmology, 1986The origin of the ophthalmoscope has been a matter for discussion for many years. Not all the facts are known, and probably never will be, but enough is known to stimulate interested speculation. Helmholtz has been variously described as the "discoverer;" he is said to have "devised" it; and in a recent issue of OPHTHALMOLOGY the Editor refers to ...
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EYESi Ophthalmoscope – A Simulator for Indirect Ophthalmoscopic Examinations
2009We present a training simulator for indirect ophthalmoscopy. An optical tracking system is used to reconstruct the position of a lens mockup and a model of the patient's face. Refraction and illumination are computed in real-time and displayed on a head-mounted display using augmented reality.
Oliver Schuppe +3 more
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Study of optical design of three-dimensional digital ophthalmoscopes.
Applied Optics, 2015Yi-Chin Fang +2 more
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