TELESCOPIC SPECTACLES(Click Here for Large Type)
Binoculars magnify distant objects.
Binoculars placed into eyeglass frames are called TELESCOPIC SPECTACLES. They can be monocular (one eye) or binocular. The telescope can be placed in various positions:
"Bi-optic" Position- when mounted on top, they allow the user to switch between the
regular lens and the magnified lens. In special cases, these can be used for DRIVING,
to "zoom" in on signs or objects. Some use them at concerts, plays,
lectures and church to see faces better.
The "bi-optic" can be used for walking/mobility type activities.
"Full
Diameter" Position- With the telescopes
centered in the frame, a larger magnified area is viewed. This is useful for watching
television, seeing a play or movie or when ever a wider field of view is desired.
It is not useful for walking or driving, or any mobile task.
"Custom" Positioning- The telescopes can be placed in any position and at any angle. This custom positioning allows telescopic spectacles to be designed with the patients' needs in mind.
Sylvia Meyerson of Laguna Hills, California is shown here playing bridge with specially focused near telescopic spectacles.
The top portion allows distance vision to see her partner,
The lower portion holds two lenses:
a) the telescopes for seeing the cards on the table;
b) a magnifier for the cards in hand.
POWER / FIELD OF VIEW / COST
Telescopes vary in power from 1.7X to 8.0X.
Field of view decreases with power.
Field of view varies with design of the telescope:
There are four types:
1. regular field- a "galilean" system available as fixed focus or variable focus.
2. wide angle- a "galilean" system available only as fixed focus.
3. expanded field- a "keplerian" variable focus system.
4. micro-spiral- a "galilean" variable focus system.
Cost varies with the Rx needed in the system and the type of telescopic system ordered. The range of cost is from about $1,500 to as high as $3,000. Average is about $2500, which includes measuring, fitting, adjusting, and instruction in use.
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