Driving
with Bioptic Telescopes
Independent Living
ViewFinder
Low Vision Resource Centers
The
eye doctors at the ViewFinder Low Vision Resource Centers specialize
exclusively in Low Vision Rehabilitation. They have been recognized
as leaders in low vision rehabilitation not only in Arizona, but throughout
the United States.
Our
doctors help their patients enhance their remaining vision with special
low vision eyeglasses and custom microscopic and telescopic low vision
aids. They provide the latest, state-of-the art technology for our visually
impaired patients. They also recommend other optical and non-optical
low vision aids as well as low vision services to complete our patient's
total rehabilitation. With the help of our doctors, occupational therapists
and staff, our patients will learn how to perform their daily tasks
despite a visual impairment so that they can enjoy life and remain independent.
To
make an appointment for a low vision evaluation with one of our doctors,
please call either ViewFinder location. Appointments for low vision
evaluations at the Arizona Center for the Blind & Visually Impaired
and Yuma locations are made through our Sun City office. Medicare and
other insurances are accepted for low vision examinations.
Locations:
1830 South Alma School Road,
Suite 131 • Mesa, Arizona 85210 • 480.924.8755
10001 West Bell Road
• Sun City, Arizona 85351 • 623.583.2800
3100 East Roosevelt
• Phoenix, Arizona 85008 • 623.583.2800
2149 West 24th Street
• Yuma, Arizona o 85364 • 623.583.2800
Driving and Visual Impairment
The ability to drive is a
privilege that many of us take for granted. Driving affects our quality
of life and is a means to exercise freedom of mobility. The ability
to drive gives people access to better jobs. It lets visually impaired
parents share more fully in their children's lives when they can attend
school events. Driving also decreases the social isolation many visually
impaired adults feel when they cannot leave their homes.
Arizona is one of 39 states
that will grant a driver's license to some visually impaired people
when they drive using a bioptic telescope. Driving with a visual impairment
while using bioptic telescopes is a very personal decision and that
decision should be made collaboratively by the individual, the low vision
eye specialist and the motor vehicle department.
Vision is not the only factor
that should be taken into consideration. Cognitive ability, reaction
time and use of good judgment are equally important. Your eye doctor
will discuss these and other issues during your evaluation. Using information
obtained from a functional low vision evaluation you and your eye doctor
will determine if you are a candidate for the Bioptic Driving
Program.
What are Bioptic Telescopes?
Bioptic telescopes are miniature
telescopes which are mounted into ophthalmic corrective lenses, usually
above the person's line of sight. The telescopes can be focusable or
non-focusable and come in powers from 1.7X - 8X. The focusable telescopes
usually focus from infinity to 12" making them useful for distance,
intermediate and near tasks. Our patients use the telescopes not only
for driving but also for seeing signs in the grocery store and airport,
products on grocery store shelves, watching television and for seeing
their computer monitor.
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|
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Parking
lot viewed Normally |
Parking
lot viewed with a 3X Bioptic Telescope |
How
are Bioptic Telescopes
Used for Driving?
Mounting the bioptic telescope
into the lens in a pair of eyeglasses allows the driver to use his regular
prescription lenses as well as the telescope gaining first an overall
view and then very detailed view of the road, traffic and signs up ahead.
The Bioptic Telescopic System allows a trained user the opportunity
to detect objects or movement within his/her driving scene using the
wide field of view available through the regular spectacle lens and
to resolve fine details such as road signs and traffic lights by glancing
briefly and intermittently into and out of the miniature telescope.
(See photo).
The bioptic driver's use of the telescope can be likened to the normally
sighted driver's use of rear and side mirrors. They are used as spotting
tools for one or two seconds at a time. The telescopes come in a variety
of sizes, styles and powers can be made in either focusable or non-focusable
versions. They can contain the person's eyeglass prescription and/or
tints. The telescopes are focused at distance while driving. Your eye
doctor will help you determine the best telescope for your needs.
Driving with a bioptic telescope
requires extensive training in the general use of the telescope as well
as behind-the-wheel driver's training. The bioptic telescope is a prescriptive
device, prescribed by either an optometrist or ophthalmologist specializing
in low vision rehabilitation.
If you are undecided
as to whether you wish to pursue a bioptic driver's license and would
like to work with a telescope before making this decision, your eye
doctor will have you work with a telescope during your routine low vision
evaluation. We can even provide training with a hand held telescope
so that you can view distance objects at home and while you are a passenger
in a car. This may help you decide if bioptic driving is for you.
Arizona
Law Regarding the Use of
Bioptic Telescopes While Driving
ViewFinder
Bioptic Driving Program
Steps
to Becoming a Bioptic Driver
Step # 1:
A Functional Low
Vision Evaluation:
You will need a recent low vision examination performed by your low
vision eye doctor. Your doctor will use the following tests to determine
if you are a candidate for bioptic driving:
1. Visual Acuity Test
2. Visual Field Test
The visual field test measures the total area in which
objects can be seen in the peripheral vision while the eye is
focused on a central point.
3. A dilated eye examination to rule out active pathology.
4. Contrast Sensitivity Test: A measurement of how
well the eye sees in conditions that are not black and white. A truer
measurement of how the eye sees in the real world.
5. Useful Field of View Test: The useful field of view
(UFOV) test has been developed to access an individual's ability to
process and react in a timely fashion to multiple visual events occurring
simultaneously. It defines the visual field within which rapidly presented
visual material can be used. The test includes processing speed, selective
attention, and divided attention. Data shows that a reduction in the
UFOV has been associated with increased future crash involvement, whereas
a moderate reduction in visual acuity, contrast sensitivity, and visual
field were not.
Because the UFOV test relies on both visual sensory and cognitive skills,
it provides a more global measure of visual functional status than either
sensory or cognitive tests alone. It is a good predictor of driving
performance for patients and it is better than chronological age for
identifying drivers at risk for crashes.
Step #2:
Designing and fitting
your Bioptic Telescope:
Bioptic telescopes are custom made for each patient and contain the
patient's unique prescription in the ophthalmic lenses and, in some
cases, the telescope itself. Your eye doctor will determine the correct
telescope for you. Your telescope may take up to 4 weeks to obtain from
the manufacturer.
Step #3:
Training in the use
of your Bioptic Telescope:
A bioptic telescope alone does not make a person a safe driver. All
potential drivers require extensive training in the use of their telescope.
You will be evaluated and trained by ViewFinder's occupational therapist.
The evaluation will include a Useful Field of Vision test. The training
will focus on the user's ability to focus and demonstrate movement in
and out of the bioptic within one to two seconds to spot distant targets.
The goals are for the patient to be able to use the device effectively
while stationary ( i.e., sitting or standing and spotting items across
the room) and then while moving (i.e., walking in the grocery store,
spotting signs and recognizing objects at a distance). Patients will
also practice spotting targets while a passenger in their car with a
friend or family member driving. The occupational therapist will instruct
you through a series of exercises designed to bring you to a skill level
ready to pursue driving. When you have demonstrated the ability to correctly
use the bioptic telescope, your eye doctor may then recommend that you
receive a Behind-the-Wheel Driver's Evaluation before signing the vision
form for your Arizona Driver's license. Remember: Even if you hold a
current license, you are not legal to drive with the
bioptic telescope until you have passed the Arizona Motor Vehicle's
Road Test.
Step # 4:
Driver Evaluation while Using the Bioptic Telescope:
While Arizona does not require Behind-the-Wheel Training for potential
bioptic drivers, your eye doctor may refer you to a driving rehabilitation
program, especially if you have not driven in a period of time. Many
lighting, glare and road conditions influence the ability of the low
vision driver's performance. A driving evaluation and training program
will help prepare you for the Arizona Department of Transportation road
test and increase your safety and confidence behind the wheel. The evaluation
will be in two parts: the first part will be as a front seat passenger
while the driving rehabilitation specialist drives. The patient will
demonstrate their skills in spotting road signs and hazards. The second
part will have the patient behind the wheel driving to demonstrate their
skill using the Bioptic. The Driving Rehabilitation Specialist will
make suggestions to help the patient with their driving skills and develop
a training program to help the patient meet the Motor Vehicle department's
criteria to pass the drivers test while using the bioptic telescope.
Patients who have never driven
before will automatically be referred the Driving Rehabilitation program
for driver's training. You will be instructed in all aspects of driving
to enable you to pass your on-the-road driving examination.