aging and the eye masoud r. manaviat, m.d. june 2011
TRANSCRIPT
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Aging and the eye
Masoud R. Manaviat, M.D.
June 2011
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As people age, some physiologic changes are inevitable
Other changes, while not universal, are far more common than among younger people
Older people also face unique psycho-social challenges
These changes and challenges can lead to a variety of geriatric syndromes and issues
These in turn can lead to poor health outcomes, functional decline, frailty, disability and dependence
The Challenges of Aging – How older patients are different from all other patients
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Examples of universal changes Decreased night vision Decreased muscle mass Loss of hair pigment Decreased lung vital capacity Decreased height Decreased gait speed
Physiologic Changes Associated with Aging
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Examples of changes (including diseases) that are increasingly common, though not inevitable, as people age Hearing loss Macular degeneration Hypertension Heart disease Cancer Parkinson’s disease Dementia
Physiologic Changes Associated with Aging
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Loss of income Loss of close family Loss of community Social isolation
Social Problems More Common with Aging
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Sensory Impairment (Visual and Hearing) Gait Impairment Falls Incontinence Dementia Depression Delirium Polypharmacy Sleep Problems Pressure Ulcers
Geriatric Syndromes
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In the 2000 US Census, 12.5% of the US population was >64
By 2030, it is predicted that 20% of the US population will be >64
As the elderly population increases the care needs and expenditures for that care will increase
The geriatric workforce is not predicted to increase to meet this demand
The Challenges of an Aging Population – Why it matters
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Visual impairment affects 20-30% of people over the age of 75.
Visual impairments that occur with greater frequency as people age include Refractive error Cataracts Glaucoma Macular degeneration Diabetic retinopathy Blindness
Sensory Impairment - Vision
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Age-Dependent Changes:Physiological and Performance
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Aging Eye
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Mostly affect appearance Seldom affect performance Some need monitoring with age
Lens Aqueous Humor Retina Macula
General Aging Changes
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Sclera- thinner, pigment change Aqueous Humor- intraocular pressure Vitreous Humor- thins, opacity Cornea- arcus senilis (Ca and cholesterol),
sensitivity Iris- muscles weaken, smaller pupil Lens size and thickness , elasticity Conjunctiva- dry eye
General Aging Changes
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Retina- dulls, blood vessel changes Optic Nerve- boundaries less defined, fewer
capillaries Macula- little or no foveal reflex, drusen and
lipofuscin deposits, pigmentation Lids- orbicularis oculi muscle weakens Lacrimal Glands/Tears- production , Orbit- fat loss, enophthalmos
More General Aging Changes!
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Refraction- lens and ciliary muscles Results in Presbyopia Age 40+
Acuity and Contrast Decreases after age 50 Due to Brain
Glare Due to lens and vitreous humor
Dark Pupil and Lens
Age Changes in Performance
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Fun stuff- Vitreous Humor? Haziness Flashing Lights Moving Spots
Color Discrimination as cones
Dark Pupil and Lens
Visual Field Size 1 to 3 degrees per decade
More Performance Changes!
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Age-Related Changes:Diseases and Syndromes
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Normal
Dry AMD Wet AMD
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Symptoms: increase in lens opacity Peripheral to nuclear
Causes/Risk Factors: UV light/free radicals Glycation Corticosteroids Diabetes
Cataracts
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Cataracts
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What is it? Clouding of the eye’s lens that
causes loss of vision.
Cataract
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Who is at higher risk? Most cataract are related to aging Other risk factors
• Diabetes• Smoking• Exposure to sunlight
(continued from previous slide)
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Cataract
Same scene as viewed by a person with cataract
Normal vision
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Symptoms Cloudy or blurred vision. Colors that may not appear as bright
as they once did. Glare. Poor night vision.
Cataract
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Treatment options Glasses Better lighting Surgery
(continued from previous slide)
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What can you do? Eat a healthy diet. Wear sunglasses and a brimmed hat
when outdoors. Don’t smoke.
Cataract
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Glaucoma
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What is it? A group of eye diseases that can
damage the optic nerve in the eye.
Glaucoma can develop in one or both eyes.
Primary open-angle glaucoma is the most common form.
Glaucoma
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Who is at higher risk? African Americans over age 40. Everyone over the age of 60, especially
Mexican Americans. People with a family history of glaucoma.
(continued from previous slide)
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Glaucoma
Same scene as viewed by a person with glaucoma
Normal vision
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Symptoms No early warning signs or
symptoms No pain Loss of side vision
Treatment options Medications, usually eye drops Laser or conventional surgery
Glaucoma
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What can you do? People at higher risk should get a
comprehensive dilated eye exam every one to two years or as instructed by your eye care professional.
Glaucoma
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Macular Degeneration
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What is it? Common among people aged 60 or older. Can damage the macula, which is needed
for sharp, detailed central vision.
Age-Related Macular Degeneration (AMD)
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Who is at higher risk? The greatest risk factor is age. Other risk factors
• Smoking.• Family history.• Obesity.• Race. Caucasians are more likely to lose
vision from AMD.
(continued from previous slide)
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Age-Related Macular Degeneration (AMD)
Same scene as viewed by a person with AMD
Normal vision
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Symptoms No pain. Blurred vision. Drusen (can only be seen by an eye
care professional).
AMD
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Treatment options Age-Related Eye Disease Study (AREDS)
special vitamins/minerals supplement formulation.
Laser surgery. Eye injections. Photodynamic therapy.
(continued from previous slide)
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What can you do? Eat a healthy diet Don’t smoke, or stop smoking Maintain normal blood pressure Maintain a healthy weight Exercise
AMD
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Diabetic Retinopthy
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What is it? A group of eye problems associated
with diabetes. Diabetic retinopathy is a leading
cause of vision loss and blindness.
Diabetic Eye Disease
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Who is at higher risk? People with diabetes. The longer someone has
diabetes, the more likely it is he or she will get diabetic retinopathy.
(continued from previous slide)
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Diabetic Retinopathy
Same scene as viewed by a person with diabetic retinopathy
Normal vision
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Symptoms No early warning signs or symptoms
Early detection and timely treatment can reduce the risk of vision loss.
Treatment options Laser treatment Surgery
Diabetic Eye Disease
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What can you do? Control your ABCs - A1C, blood
pressure, and cholesterol. Take your medications as directed. Maintain a healthy weight. Exercise. Don’t smoke. Have a dilated eye exam at least
once a year.
Diabetic Eye Disease
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What is it? The eye does not produce tears
properly. Tears evaporate too quickly. Inflammation of the surface of the
eye may occur along with dry eye.
Dry Eye
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Who is at higher risk? Women often experience dry eye more
than men. Dry eye can occur at any age. Older adults frequently experience
dryness of the eyes.
(continued from previous slide)
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Symptoms Stinging or burning of the eye. Feeling as if sand or grit is in the
eye. Episodes of excess tears following
dry eye periods. A stringy discharge from the eye. Pain and redness of the eye. Episodes of blurred vision.
Dry Eye
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Symptoms Heavy eyelids. Decreased tearing or inability to shed
tears when crying. Uncomfortable contact lenses. Decreased tolerance to any activity that
requires prolonged visual attention. Eye fatigue.
(continued from previous slide)
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Treatment options Using artificial tears, prescription eye
drops, gels, gel inserts, and ointments. Wearing glasses or sunglasses. Getting punctal plugs.
(continued from previous slide)
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What can you do? Use an air cleaner to filter dust Avoid dry conditions Use lubricating eye drops Visit an eye care professional
Dry Eye
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Low Vision Aids
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Low Vision Aids
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What is it? A visual impairment that is not
corrected by standard eyeglasses, contact lenses, medication, or surgery.
It interferes with the ability to perform everyday activities.
Low Vision
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Who is at higher risk? People with eye disease. Some people develop vision loss
after eye injuries or from birth defects.
(continued from previous slide)
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Treatment options Vision rehabilitation.
What can you do? See a specialist in low vision. Talk to your eye care professional
about vision rehabilitation. Use low vision devices.
Low Vision
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