If you’re a provider learning hormone replacement therapy (HRT) through structured HRT training for providers, here’s a clinical pearl most courses will never teach you:
Hormones like estradiol and testosterone play a critical role in eye health—especially in aging patients.
One of the hallmark signs of hormone decline, particularly in women, is the drying of mucosal membranes and tissues
That includes:
- The vaginal canal
- The nasal passages
- And yes, the ocular surface
Let’s dive deeper into how Dry Eye Syndrome (DES) relates to hormone replacement—and why providers trained in HRT may soon be at the forefront of eye health and aging.
The Link Between Hormones and Dry Eye Syndrome (DES)
From a functional medicine root-cause perspective, Dry Eye Syndrome is often another downstream manifestation of systemic hormonal and metabolic dysfunction.
According to recent data, Dry Eye Syndrome affects about 15 percent of all U.S. adults over 65—and women are twice as likely to experience it; 57% of postmenopausal women have dry eye disease, and 79% of peri- and postmenopausal women report symptoms.
Because menopause affects the eyes through hormonal changes in sex hormones, this pattern is often described as menopausal dry eye.
Because declining levels of estradiol and testosterone reflect shifts in hormone production, they affect the production of normal tears, protective mucous, and the oils that support clear vision and comfort. In menopausal women, lower levels of androgen levels—often just about 30% of peak androgen levels by menopause—play an important role, since androgens regulate meibomian gland function and oil production.
When hormone levels drop, the meibomian glands—the eyelid oil producing glands—can develop meibomian gland dysfunction, reducing tear production support and weakening tear film stability. That can lead to evaporative dry eye, more surface inflammation, and worsening dryness. The result?
- Redness
- Burning
- Blurred vision
- Chronic irritation
- And in advanced cases, permanent corneal damage
For decades, the only answer was constant eye drops with minimal benefit.
But that’s starting to change—thanks to hormone research.
Hormone Replacement Therapy (HRT) as a Frontline Solution for Eye Aging?
Much like other age-related conditions covered in our advanced HRT clinical training, eye aging responds best when hormones are optimized early and thoughtfully.
At HRT University, we teach that early intervention with medically necessary hormone therapy can be part of a broader treatment plan to prevent and mitigate many age-related symptoms—including dry eye disease—while recognizing that menopausal hormone therapy and hormone replacement therapy may affect the eyes differently depending on formulation, with evidence showing estrogen-only hormone therapy increases dry eye risk by 69% and each additional three years of HRT raises dry eye risk by 15%.
But what about patients who are already symptomatic?
Here’s where things get exciting.
Recent studies in 2024 and 2025 have tested topical autologous serum (think PRP for the eyes) combined with estradiol and progesterone, and other clinical treatment research has also found that topical estradiol eye drops improved symptoms in a study of 104 women.
The results? For patients with severe dry eye, treatment options may also include prescription eye drops—especially prescription anti-inflammatory drops that target chronic ocular surface inflammation—along with artificial tears, over the counter support, and other therapies as needed.
- Improved tissue healing
- Increased energy production in local nerve cells
- Measurable improvement in dry eye symptoms
One quote from a 2025 study says it best:
“The increase of estrogen in patients’ bodies can increase the number of mitochondria in cells, maintain the structure and function of mitochondria, increase the number of mitochondrial cristae, stabilize mitochondrial membrane voltage, and thus increase the number of ERβ in meibomian gland tissue, thereby improving the normal dry eye function of patients.”
​​Li, T., Tang, J., Wang, X. et al. 2025
Why Mitochondria Matter in Ocular Surface and Dry Eye Treatment
As hormone science evolves and demand surges, more clinicians are seeking hormone replacement therapy training in 2026 to understand mitochondrial health as a core mechanism—not just a biochemical footnote.
Here’s the kicker.
We now know that mitochondrial dysfunction is a root cause of many chronic diseases—including Dry Eye Syndrome—and identifying the underlying cause of a patient’s symptoms should come before choosing treatment.
Hormones like estradiol and progesterone are mitochondrial superstars.They enhance:
- Mitochondrial density
- Membrane voltage
- Mitochondrial cristae integrity
- Cellular energy output in sensitive tissues like the eyes and brain
That helps explain why hormonal shifts affect gland and tissue behavior, since sex hormone receptors on the ocular surface influence how these systems respond.
This gives us an entirely new reason to educate providers on hormone optimization—not just for symptom relief, but for cellular restoration.
Is Estradiol the Future of Eye Care?
It’s not just about DES.
We are now starting to explore the use of hormone therapy for:
- Glaucoma, since menopause can increase intraocular pressure and may raise glaucoma risk
- Retinal degeneration
- Age-related macular changes
- Eye disease in postmenopausal women
As more data comes in, ophthalmologists will need to become HRT-literate clinicians, and many will benefit from ongoing HRT-focused clinical articles and podcasts. (And we hope they’ll be enrolling in the HRT University Master Course when they do.)
What This Means for You as a Provider
This is what makes hormone replacement therapy so exciting.
It’s not just about hot flashes and libido—it’s about restoring function across every tissue in the body, including the ones most providers never think about.
The eyes.
The brain.
The mitochondria.
Patients with persistent or severe symptoms may need an eye doctor or dry eye specialists for a clinical treatment plan: some improve with home remedies or warm compresses, over-the-counter artificial tears can help early dryness, wraparound sunglasses reduce wind exposure outdoors, and LipiFlow treatment restores oil flow in meibomian glands, while others may need prescription eye drops. Dry eye left untreated can damage the cornea, so patients should see a doctor if symptoms become severe or if light sensitivity and blurred vision worsen.
That’s why we created HRT University for mastering HRT and building a 7-figure clinic.
To give providers the knowledge they deserve, and patients the care they’ve been waiting for
If you’re looking to master hormone therapy, so you can treat the root cause—not just symptoms—this is your invitation. You can explore our full HRT University sitemap of resources, and if you have questions about whether it’s right for your practice, contact HRT University directly.
👉 Join the HRTU Master CourseAnd come be part of a new medical movement. We’re restoring health and function—one patient at a time.
