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ophthalmoscope |
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ophthalmoscope (ŏfthăl`məskōp'), instrument used for examining the inner structure of the eye eye, organ of vision and light perception. In humans the eye is of the camera type, with an iris diaphragm and variable focusing, or accommodation. Other types of eye are the simple eye, found in many invertebrates, and the compound eye, found in insects and many ..... Click the link for more information. . The device was invented by the German physiologist H. L. F. von Helmholtz in 1851. His model consisted of three plates of glass pressed together and mounted on a handle at a 45° angle. A light was placed beside the subject whose eyes were to be examined. Some light passed through the plates, but some was reflected back into the eye. The form of the instrument now in general use consists of a concave mirror and a battery-powered light source within a tubular handle. Sighting is through a single or binocular eyepiece. The ophthalmoscope is equipped with a rotating disc of lenses to permit observation of the eye at varying depths and magnifications. Examination of the eye may be enhanced by administering drugs to dilate the pupil. ophthalmoscope an instrument for examining the interior of the eye How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Until recently, the only way for Moshfeghi to examine a child was to go to one of several outlying hospitals and look in the infant's eye himself with an indirect ophthalmoscope. As such, it offers dual modality and is compatible with IRIS Medical EndoProbe(R) handpieces for endophotocoagulation procedures and the IRIS Medical TruFocus(TM) Laser Indirect Ophthalmoscope Plus, to satisfy the needs of the vitreoretinal specialists. IRIDEX Corporation (NASDAQ/NMS:IRIX) announced it will display three new products at the 1999 annual meeting of the American Academy of Ophthalmology (AAO) taking place in Orlando, Florida on October 24-27, 1999: the IRIS Medical Tri-Mode(TM) OcuLight(R) SLx, a new family of TruFocus(TM) Laser Indirect Ophthalmoscopes (LIO), and the EasyFit(TM) Conversion Kit to upgrade outdated argon laser photocoagulators. |
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