If a person cannot
see well enough to drive, watch television, or see sporting events,
plays, or other distance objects with their current eyeglasses, a
small telescope can be used to help see better at a distance. Telescopes
can be hand held, put on a finger ring, mounted on a neck cord, or
mounted in or on a patient's eyeglasses. Telescopes come in many powers
and, like binoculars, the field of view is reduced when looking through
the telescope.
When
the telescope is mounted in an eyeglass frame, the patient's hands
are free. Spectacle-mounted telescopes can be pre-made and inexpensive,
or be custom-made for the patient with the patient's eyeglass prescription
in the telescope. A low vision eye doctor can prescribe and have these
telescopes made.
When a telescope
is mounted in the top of the eyeglass lens, the patient can use both
the telescope and his eyeglass prescription. The telescope is used
for tasks such as spotting signs while walking, seeing the chalk board
in the classroom, driving where allowed by law, and any task that
might require the use of both the telescope and prescription lens
at the same time. Telescopes are usually angled upward. A person looks
straight ahead to see through the eyeglass lens and then tilts their
head down while looking straight ahead to view a magnified image through
the telescope. This is similar to using a bifocal. In several states
it is legal for a visually impaired person to drive with a biopic
telescope. Contact your motor vehicle department for information about
driving with biopic telescopes in your state.
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