Author:
November 14, 2022
Board Certified OBGYN
Board Certified OBGYN
Dr. Dunston is a board certified OBGYN and functional medicine specialist.
Image by Studio Firma / Stocksy
November 14, 2022
Close your eyes and pretend that you will never open them again. How would that affect you? If you could never look at the faces of your loved ones, read a book, see the colors of a sunset, or drive a car…what would your life be like without your vision?
Your eyes are not only the windows to your soul but also to your health. The hormonal changes associated with menopause directly increase your risk of blindness, and more than 65% of blindness occurs in older women—a sobering, but ultimately preventable, statistic.
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Let’s take a closer look at what happens to a woman’s eyes during menopause and the steps you can take to protect your eyes—a precious and underappreciated aspect of our health—before it’s too late.
Your eye on hormones.
Most women aren’t aware that sex hormones have power outside of menstruation and reproduction. But in fact, they have more responsibilities outside the reproductive system than they do inside it. You can see evidence in the brain and central nervous system1, which has more receptors for sex hormones than anywhere else in your body. The eyes are a part of the central nervous system, and so our sex hormones play a key role in eye health2.
In your fertile years, estrogen, testosterone, and progesterone bathe the specialized tissues of your eye. Their job is to keep the eyes moist, vital, and alive. But during menopause, the amount of sex hormones in the body decreases dramatically.
All three sex hormones work together to control our eyes’ oil glands3, and one of the most common results of the drop in sex hormone levels is dry eye. Estrogen also affects the elasticity of the cornea, which changes the way light travels through the eye.
Women in their 40s and 50s are disproportionately affected by these issues compared to their male counterparts. They are also 12% more likely to experience vision loss than men.
Even small variations in the shape, elasticity, and moistness of the eye as we age can have dramatic effects on our vision. These shifts may seem subtle at first: dry eyes after a long day at the computer, itchy eyes during certain seasons, red eyes, slight vision loss. But each symptom is a message from the vision center in our brain trying to tell us that something in our body is out of balance.
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Common eye problems.
Sex hormone imbalances are partly responsible for the four most common eye problems: glaucoma, macular degeneration, thyroid eye, and cataracts. Let’s take a closer look at the role that hormones play in each:
Glaucoma affects the optic nerve at the back of the eye. Studies suggest that low levels of estrogen can increase a woman’s risk4 of developing open-angle glaucoma during menopause.
Your eye makes fluid to nourish the parts of the eye that do not have blood vessels. However, too much fluid or problems in draining the fluid can cause damage to the optic nerve. Damage to the optic nerve and increased pressure in the eye cause peripheral vision loss.
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2.
Age-Related Macular Degeneration
Age-Related Macular Degeneration, or AMD, begins with the deterioration of the retina at the back of the eye. Macular degeneration gets more common the older you get and results in blurry vision and central vision loss. While AMD is not reversible, a healthy lifestyle focused on preventing inflammation can help prevent AMD and keep the macula from degenerating faster.
While the link between sex hormones and AMD is still undergoing study, estrogen is known to have the capacity to be both anti-inflammatory and anti-oxidative. This implies that lower estrogen levels may cause an increase in inflammation and oxidation.
Thyroid Eye is associated with Graves’ disease (hyperthyroidism), Hashimoto’s (hypothyroidism), and the presence of high thyroid autoantibodies. The tissues in our eye sockets have receptors that are similar to those of the thyroid gland. So if the thyroid activates, the eye sockets activate5. This causes inflammation in the eyes including bulging, dryness, puffiness, double vision, and vision loss.
Since the thyroid hormones and the eye are so tightly tied together, changes to our hormones influence the health of our eyes. A hypoactive thyroid can cause testosterone to drop. Estrogen helps spread the thyroid hormone throughout the bloodstream. Too little estrogen results in inadequate thyroid tissue, while too much can result in the formation of a goiter, the irregular growth of the thyroid gland.
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Cataracts can occur postmenopause, but their link to hormones is still inconclusive. The same way the headlights on your car accumulate a film over time that blocks the light from getting through, your eyes can start to cloud with age. Most older women experience problems with cataracts at some point or another. Studies show that low estrogen levels6 may increase the likelihood that you will develop cataracts.
Explaining the gender discrepancy
Some evidence suggests that gender disparities in vision problems are cultural. Women have less access to routine vision care and fewer funds to finance it. Women also live longer than men, giving them more time to develop these eye diseases, which are more common at the end of our lives.
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Solutions for better eye health.
Healthy eye habits and practices can prevent the onset of many eye diseases including glaucoma, AMD, and thyroid eye. Try a few of these healthy eye habits to prevent vision problems:
- Balance your hormones: Thyroid, cortisol, estrogen, progesterone, testosterone, insulin, and DHEA are the seven main metabolic hormones. When working in harmony, your hormones ensure that your eyes have everything they need to function, so prioritize hormone-balancing strategies.
- Keep up with vision exams: Regular vision exams are the No. 1 way that you can take care of your vision. Many eye problems can be asymptomatic in the beginning, and so scheduling a yearly appointment with your ophthalmologist will increase the likelihood that you will discover these vision problems before they can increase in severity.
- Take your omega-3s: Omega-3 fatty acids are essential for retinal health. The eye has the highest concentration of omega-3s in the body. Taking an omega-3 supplement can prevent dry eyes. You can also add foods containing omega-3s to your diet, like salmon, mackerel, sardines, flaxseeds, and chia seeds.
- Eat right: Decreasing toxicity and inflammation with a healthy diet and lifestyle improves eye health, increases longevity, and lowers the risk of disease. You can also live a less toxic lifestyle by filtering your water, choosing nontoxic health care products, and eating organic foods.
- Rest your eyes by decreasing screen time: Our generation spends a disproportionate amount of time looking at computer screens. The increasing exposure to blue light can alter our sleep schedule and result in dry, itchy eyes. Blue light during the day will keep you awake but will hinder your sleep at night. Try wearing blue-blocking glasses if you are looking at blue light screens after the sun goes down.
- Keep an eye on blood pressure: Blood pressure—either high or low—can negatively affect the retina and optic nerve. Healthy blood flow means healthy vision. The retina has one of the highest metabolic rates in the body, which means that it needs plenty of nutrients and oxygen to work well. Blood brings nutrients and oxygen to your eyes.
While preventive measures may seem like a hassle, they are still easier than treating an irreversible case of AMD or glaucoma later in life. Incorporate a few or all of these vision habits for healthy eyes in midlife and beyond.
The takeaway.
Our vision is precious, but you may not realize how precious until it’s gone. If you don’t want to know what it’s like to forget your loved one’s face, miss the sparkling of light on water, or miss out on the beauty of a full moon, you have to be proactive about vision health. Hormonal changes are often asymptomatic, so get your eyes checked regularly and nurture them always so that they can function optimally for decades to come.