Hi there & welcome back to Aging Together! March is a busy month! Not only is it Women’s History Month, but it is also National Nutrition Month & Save Your Vision Month! I’ll be scattering related topics throughout the month, so stay tuned! This week, we are tuning into Save Your Vision Month! In today’s post, I’m taking a dive into vision and aging.

Background

As we age, our bodies go through several changes, and our eyes are no exception. Our eyes’ ability to see and focus on objects changes with time, and many people experience visual changes as they grow older. These changes can impact an individual’s overall health, independence, and quality of life, as well as their families’ wellbeing.

Visual impairments are prevalent among older adults, and they can affect many aspects of daily life. For example, individuals with vision impairments may struggle with reading, driving, cooking, or even recognizing faces. Additionally, visual impairments can lead to an increased risk of falls and other accidents, which can be particularly dangerous for older adults.

There are several types of vision changes that are common as we age. One of the most prevalent is presbyopia, which is an age-related gradual loss of lens accommodation, or the eye’s ability to focus on nearby objects. The National Eye Institute (NEI; 2016) reports that presbyopia affects nearly everyone over the age of 50. This condition often becomes noticeable around age 40 and can make reading and other close-up tasks more difficult. In North America, the National Institute of Health (NIH; 2016) reports a nearly 80% prevalence by ages 45-55, with an estimated 16% without adequate correction. 

Top 5 Age-Related Causes of Vision Impairment

According to the World Health Organization (WHO; 2022), approximately 2.2 billion people worldwide have vision impairments, and the majority of these individuals are over the age of 50. In over half of these cases, the vision impairment could have been prevented, or has yet to even be addressed. Globally, WHO reports that the leading causes of vision impairment are age-related macular degeneration, cataract, diabetic retinopathy, glaucoma, and uncorrected refractive errors.

Macular Degeneration

Age-related macular degeneration (AMD) is a progressive, chronic condition that affects the macula, the part of the retina that is responsible for sharp, central vision, and can cause a loss of visual acuity or even blindness. According to the NEI (NEI/NIH, 2016), approximately 2.1 million Americans over the age of 50 have late-stage AMD, with 65% of the cases in women. As the population ages, this number is expected to increase to 5.44 million by 2050.

Cataracts

Cataracts occur when the lens of the eye becomes cloudy or discolored due to a clumping of proteins. Cataracts can cause vision to become blurry or hazy and can make it difficult to see in low light conditions. Other symptoms include faded colors, glare, poor night vision, and double vision. The NEI reports that cataracts are the leading cause of blindness worldwide, and they affect more than half of all Americans over the age of 80.

Diabetic Retinopathy

Diabetic retinopathy occurs when chronically high blood sugars cause abnormal blood vessels to grow along the surface of the retina and into the eye. This results in fluid or blood leaking into the eye, causing blurred or spotted vision (NEI/NIH, 2016). There were 29 million people in the US living with diabetes in 2019, and that number is predicted to grow to one-third of all US adults by 2050 – that’s over 80 million people!

Glaucoma

Glaucoma is a chronic condition involving a group of eye disorders. Key characteristics include deterioration of the optic nerve or specific changes in a visual field. In most types of glaucoma, fluid builds up in the eye, causing increased pressure, which damages the optic nerve over time, leading to blindness. In 2010, there were an estimated 2.7 million adults with glaucoma, and it is anticipated to increase to more than 6 million by 2050 (NEI/NIH, 2016). 

Refractive Error

Refractive error comes from an irregular shape of the cornea, lens, or eyeball, preventing light from focusing properly on the retina. Symptoms of uncorrected refractive error can include blurry vision, headaches, haziness, and eye strain (NEI/NIH, 2016). This is the most common cause of vision impairment in adults in the US at approximately 48 million adults aged 40 and over.

The Impact of Visual Impairment

The impact of visual impairments on aging and families can be significant. For example, individuals with vision impairments may experience social isolation, as they may be unable to participate in activities that they once enjoyed. The American Foundation for the Blind reports that older adults with vision impairments are more likely to experience falls and other accidents than those without impairments. They also report that the economic impact of vision loss among older adults is significant, with costs associated with healthcare, lost productivity, and reduced quality of life totaling over $139 billion annually.

Additionally, family members may feel the strain of providing care and assistance to their loved ones with visual impairments. Caring for a loved one with vision impairments can be emotionally and physically demanding, and it can be challenging to balance caregiving responsibilities with other obligations. 

Testing & Treatment

Fortunately, there are several vision tests available to detect vision impairments early on. These tests can help individuals and their families prepare for the changes that come with aging and ensure that they receive the necessary care and support. One common test is the Snellen chart, which measures visual acuity by having individuals read letters of varying sizes from a chart. Another test is the Amsler grid, which measures the macula’s function and can detect early signs of AMD. Additionally, eye doctors can perform a dilated eye exam to check for cataracts and other eye diseases.

Treatment is available for many vision impairments. For example, individuals with presbyopia can use reading glasses or bifocals to improve their near vision. Cataract surgery is a common treatment for cataracts and involves removing the cloudy lens and replacing it with an artificial lens. Additionally, there are several treatments available for AMD, including medications and laser therapy.

Prevention

There are also several opportunities for prevention, which can help individuals maintain healthy vision as they age. One of the most effective ways to prevent vision impairments is to maintain a healthy lifestyle. This includes diet, exercise, and not smoking.

Diet

Maintaining a healthy and balanced diet can help support good vision and eye health. Here are some sources of vitamins and foods that are beneficial for maintaining good vision:

• Vitamin A: This vitamin is essential for good vision and is found in many orange and yellow fruits and vegetables, such as carrots, sweet potatoes, pumpkin, and cantaloupe.
• Vitamin C: This vitamin is an antioxidant that can help protect the eyes from damage and is found in many fruits and vegetables, including citrus fruits, strawberries, kiwi, bell peppers, and broccoli.
• Vitamin E: Another antioxidant, vitamin E can also help protect the eyes from damage and is found in nuts, seeds, and vegetable oils.
• Zinc: This mineral is important for maintaining healthy eyesight and is found in many foods, including oysters, beef, pork, chicken, beans, and nuts.
• Omega-3 fatty acids: These essential fatty acids can help prevent age-related macular degeneration and are found in fatty fish, such as salmon, tuna, and mackerel, as well as nuts and seeds.
• Lutein and zeaxanthin: These antioxidants are found in leafy green vegetables, such as spinach, kale, and collard greens, and can help protect the eyes from damage.
• Anthocyanins: These antioxidants can help improve night vision and are found in dark-colored fruits, such as blueberries, blackberries, and cherries.

In addition to incorporating these foods into your diet, it is also important to stay hydrated by drinking plenty of water.

Exercise

Regular exercise can help maintain good vision in several ways. Here are some examples:

• Reduces the risk of eye diseases: Regular exercise has been linked to a lower risk of developing age-related eye diseases, such as macular degeneration and cataracts. This may be due to the fact that exercise can help reduce inflammation, which is a key factor in many eye diseases.
• Improves blood flow to the eyes: Exercise can help improve blood flow throughout the body, including to the eyes. This can help nourish the eye tissues and promote healthy vision.
• Helps regulate blood sugar levels: High blood sugar levels can damage the blood vessels in the eyes, which can lead to vision problems. Regular exercise can help regulate blood sugar levels and reduce the risk of eye complications associated with diabetes.
• Reduces the risk of eye strain: Spending long hours in front of a computer or other digital device can cause eye strain, which can lead to discomfort and vision problems. Regular exercise can help reduce the risk of eye strain by promoting better posture, reducing tension in the neck and shoulders, and improving overall physical fitness.
• Boosts overall health: Regular exercise can help promote overall health and wellbeing, which can have a positive impact on eye health. For example, exercise can help reduce stress, improve sleep quality, and support healthy immune function, all of which can help maintain good vision.

It is important to note that while regular exercise can be beneficial for maintaining good vision, it is not a substitute for regular eye exams or treatment for visual impairments.

Smoking Cessation

Finally, Not smoking can help prevent eye diseases and visual impairments in several ways:

• Reduces the risk of age-related macular degeneration (AMD): AMD is a common cause of vision loss in older adults. Smoking has been shown to increase the risk of developing AMD, and quitting smoking can help reduce this risk.
• Reduces the risk of cataracts: Cataracts are a common cause of vision loss, and smoking has been linked to an increased risk of developing cataracts. Quitting smoking can help reduce this risk.
• Improves blood flow to the eyes: Smoking can damage the blood vessels in the eyes, which can lead to vision problems. Quitting smoking can help improve blood flow to the eyes and reduce the risk of eye damage.
• Reduces the risk of dry eye syndrome: Smoking can cause dry eye syndrome, which can cause discomfort and vision problems. Quitting smoking can help reduce the risk of developing this condition.
• Helps preserve night vision: Smoking has been shown to reduce the ability to adapt to low-light conditions, which can make it more difficult to see at night. Quitting smoking can help preserve night vision and improve overall visual function.

It is important to note that the benefits of quitting smoking on eye health may take time to become apparent, and the longer a person has smoked, the greater the risk of developing eye problems. However, quitting smoking at any age can help reduce the risk of eye diseases and visual impairments. If you are a smoker and have concerns about your eye health, it is always a good idea to consult with a healthcare professional.

Helpful Eye Exercises

While there is no conclusive evidence that eye exercises can prevent or treat visual impairments, some exercises may help improve eye comfort and reduce eye strain. Here are some examples of exercises that can help maintain good vision and prevent visual impairments:

• Blinking: Blinking regularly can help moisten the eyes and reduce the risk of dry eye syndrome, which can cause discomfort and vision problems.
• Eye Massage: Gentle massage around the eyes and the temples can help reduce tension and improve blood circulation, which can be beneficial for eye health.
• Eye Relaxation: One exercise is to relax the eyes by closing them and covering them with the palms of the hands. This technique can help reduce eyestrain and improve focus.
• Focus Switching: Shifting the focus from near objects to faraway objects and vice versa can help improve the flexibility of the eye muscles and reduce eye strain.
• Peripheral Vision Training: This exercise involves looking at a fixed object while trying to be aware of objects in the periphery. This technique can help improve peripheral vision and overall visual awareness.

It is important to note that while these exercises may help improve eye comfort and reduce eye strain, they are not a substitute for regular eye exams or treatment for visual impairments. If you have concerns about your eye health, it is always a good idea to consult with a healthcare professional. Additionally, it is essential to protect the eyes from UV radiation by wearing sunglasses and a hat when outdoors.

Summary

In conclusion, vision changes are a common part of the aging process, and they can have a significant impact on individuals and their families. Fortunately, there are several vision tests available to detect vision impairments early on, and there are many treatments and prevention strategies available to help individuals maintain healthy vision as they age. By staying informed and proactive about vision health, individuals and their families can ensure that they are well-prepared for the changes that come with aging and maintain a high quality of life for years to come.

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At Caregiver Consulting & Healthy Solutions, we are dedicated to helping you navigate aging together. This blog page is for everyone: whether you are an older adult looking to age in place, a caregiver seeking support and guidance, a young or middle-aged adult planning for the future, or simply someone interested in learning more about the aging process. I hope you’ll join me on this journey. Let’s navigate aging together.