Tag: Ophthalmology Instruments
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How Ophthalmic Scanning of the Eye is done
The ultrasound is widely used for the diagnostics scanning of the eye. A-scan and B-scan modes of display are used in ophthalmic scanning. The transducer is placed directly over the eye of the patient while performing ophthalmic scanning. The high frequency sound waves that travel through the eye and the reflections (echoes) of these waves…
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How a Tonometer is used to Measure Eye Pressure
Pressure in the eye is called Intraocular Pressure (IOP). Tonometer is the instrument that is used to determine IOP. The presence of any elevated IOP can be dangerous because people with varying degree of IOP elevation may develop certain damage to the optic nerve. The optic nerve collects all the visual information from the retina…
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How Ophthalmoscope is used for Eye Examination
Ophthalmoscope is an instrument used to examine the interior of the eye including the lens, retina, and optic nerve. It is used primarily to: Ophthalmoscope is based on the principle that, light entering the pupil is reflected back to its source. Furthermore, the light follows the same path out of the eye that it took…