When I wrote about antidepressants possibly causing falls for the elderly, binocular vision disorders is
higher than expected in the elderly, most binocular vision disorders
are treatable with glasses, vision therapy, or occasionally surgery.
It is recommended that people keep their glasses up-to-date with
regular eye examinations. This will avoid large prescription changes
and is a good way to maintain good vision, decrease risk of falls,
and maintain a good quality of life as you age.
Now we have
a non-scientific review in optometry and vision science that says
that over-aggressive eyeglass prescription changes need to be
avoided. Blurred vision contributes to the risk of falling in older
adults—but getting new glasses with a big change in vision
prescription may increase the risk rather than decreasing it. Falls
are the major cause of accidental death and non-fatal injuries in the
elderly. At least one-third of healthy adults age 65 or older fall
at least once a year. For those 90 or older, the risk increases to
about 60 percent.
The reviewer, David B. Elliott, PhD,
says that falls in older adults aren't accidents. Most of the time,
they're related to a wide range of risk factors including older age,
disabilities, muscle weakness, and many different medical conditions.
The more risk factors you have, the more likely you are to fall.
In the elderly, reduced vision in a
large risk factor for falls. This suggests that interventions to
correct vision, glasses, or cataract surgery, would reduce the risk
of falling. The surprising factor, most studies have shown little or
no reduction in falls among the elderly receiving a new vision
correction.
Magnification from some new glasses may
contribute to increased risk of falls. Receiving large changes in a
glasses prescription also increases the risk of falls. This is
because the frail elderly may have more difficulty adapting to these
large changes and often are at increased risk of falling during the
period of adapting.
I needed to smile when I read, 'If it
ain't broke, don't fix it' when speaking about large or magnification
changes in glasses for the elderly. The elderly take longer to adapt
to changes in glasses prescriptions because they are not familiar
with some changes. Dr. Elliott advises caution with changes for the
elderly.
Maximizing vision corrections for the
elderly is not advised and optometrists need to assess properly the
risk factors, including history of falls, medical conditions, and
medications used. Dr. Elliott advises taking a conservative approach
to prescribing new glasses for older adults with a history of falls
or risk factors for falling.
Finally, Dr. Elliott suggests keeping
the same type of prescriptions, bifocals, or progressive lenses,
unless there is a significant reason for change. If a patent is used
to wearing single-vision glasses, they should not be moved to
bifocals or progressive lenses. A change like this is going to
increase the risk of falls.
If you are a caregiver for an elderly
person, always be aware of what the person uses for glasses and if
necessary, change optometrists if they are being radical in the
changes in glasses.
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