Multifocal Ophthalmoscopes Offer Two To Five Views of a Single Field of Vision, Depending On the Number of Rods and Lenses

 

An ophthalmoscope is a medical device used to perform an ophthalmoscopy. As a medical professional who works to diagnose, treat, and prevent glaucoma and its complications, you probably know how important an accurate visual examination is in order to make the right treatment decisions. A refractive eye exam, or ophthalmoscope, is an indispensable tool that has been developed for helping doctors evaluate eye disease. If performed correctly, an ophthalmoscope can provide the clinician with information about the patient's eyes. The more specific and complete the examination, the greater the chance the doctor will be able to make a correct diagnosis.


 

In the past, ophthalmoscopes were large, cumbersome instruments that were used almost exclusively by physicians and optometrists. In addition, these instruments were not nearly as user-friendly as they are today. Modern ophthalmoscope are small, lightweight, and most importantly, versatile. The tiny prisms in the front of the unit allow the doctor to focus light that enters through the eye to gauge the amount of eye movement. In addition, a bright, comfortable light is provided to make examining the eye very comfortable for the doctor and patient. Modern pocket ophthalmoscope with German XHL vacuum technology offer concentrated bright light for perfect illumination, a brilliant image and accurate color rendering.

Although it sounds like it should be the norm, doctors still don't routinely perform a direct ophthalmoscope on patients. This exam is referred to as "direct", because the light that comes through the eye is not altered in any way when it enters the eye through the prisms. Because of this, there is no distortion to the eye or to the patient's vision.

Detailed ophthalmoscopes are ideal for a doctor who needs to examine many patients at once. For example, if a doctor performs a littler test on a child with some eye problems, he or she will probably have to repeat the test (with the child) several times to ensure the correct diagnosis. However, if a doctor does not have to repeat the examination more than a few times because the problem has resolved itself, then a detailed exam can be quite helpful.

The most complex ophthalmoscope is the trifocal ophthalmoscope, which uses two separate rods and lenses to provide readings of eye depth and other functions. The trifocal is connected to the eye through a tube that snakes out from behind the eye; the two separate rods and lenses then provide readings that are independent of each other. A multifocal ophthalmoscope can provide two to five views of a single field of vision, depending on the number of rods and lenses and whether a patient is viewing either the central field of vision, which is normal for someone with no strabismus, or the peripheral vision, which is normally associated with a problem like crossed eyes or lazy eye. A multifocal ophthalmoscope is more complicated than a simple trifocal, but because it is more complicated, it requires less training for doctors to use.

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