Protocol · Eye Health
Ocular Hypertension (Elevated Eye Pressure) Supportive Care Protocol
Ocular hypertension means eye pressure above the normal range with no damage yet to the optic nerve or vision. No supplement has been shown to replace care from an eye doctor. Prescription pressure-lowering eye drops are the main treatment: in a trial of 1,636 people, drops cut the 5-year chance of developing glaucoma from 9.5% to 4.4%. Evidence for supplements is limited. Omega-3 capsules lowered eye pressure slightly in one 3-month trial of people with normal pressure, and ginkgo did not improve vision in a small glaucoma trial. Keep regular eye exams, and tell your eye doctor about supplements, especially ginkgo or bilberry if you take a blood thinner.
Sources: PMID 12049574; PMID 29736322; PMID 24282229; PMID 36304597
We are re-verifying the studies cited on protocol pages; only confirmed citations are shown.
What the evidence says
- In the Ocular Hypertension Treatment Study, 1,636 adults aged 40 to 80 with raised eye pressure got pressure-lowering eye drops or were watched without treatment. The drops lowered pressure by about 22%, and after 5 years 4.4% of treated people had developed glaucoma, against 9.5% of untreated people.
- In a pooled analysis of two placebo-controlled trials, 105 adults with normal eye pressure took about 1,500 mg a day of EPA and DHA (the omega-3s in fish oil) or olive oil for 3 months. Pressure fell from 14.3 to 13.6 mmHg with omega-3 and rose slightly with placebo. The change was small and was measured in people without ocular hypertension. Limited evidence.
- In a crossover trial of 35 people with normal-tension glaucoma, ginkgo extract (40 mg three times a day for 4 weeks) did not change visual field or contrast sensitivity compared with placebo. It was not tested in ocular hypertension. Very limited evidence.
- A 2019 systematic review of 33 trials of nutritional supplements in glaucoma found some signals for flavonoids (a family of plant compounds) on blood flow in the eye, but concluded the evidence is not conclusive and better trials are needed.
- The other supplements in the stack (vitamin C, magnesium, coenzyme Q10, alpha-lipoic acid and vitamin E) have no confirmed trials on file for ocular hypertension, and none is graded yet.
Safety and when to see a clinician
- Raised eye pressure is found at eye exams, so keep the checks your eye doctor (ophthalmologist or optometrist) sets. Don't swap prescribed eye drops for supplements; in the largest trial, drops roughly halved the chance of developing glaucoma.
- Get same-day care for sudden eye pain, a red eye with blurred vision, halos around lights, eye pain with headache and nausea, or sudden loss of vision.
- A 2022 review found ginkgo and bilberry are linked to bleeding in people taking blood thinners (anticoagulants). If you take warfarin or another blood thinner, or have eye surgery or laser treatment coming up, ask before taking them; the review advises stopping nonessential supplements 2 weeks before surgery.
- Tell your eye doctor about any steroid medicine, including steroid eye drops, inhalers, creams or tablets. Steroids can raise eye pressure, and people who already have raised pressure or a family history of glaucoma are more at risk.
The stack
8 supplements · none graded yet
| Grade | Supplement | Amount listed | Why it’s in the stack | Evidence on file |
|---|---|---|---|---|
| Primary stackThe core of this protocol | ||||
| Omega-3 Fatty Acids | Amount listed: 2–3 g EPA+DHA daily | May help improve blood flow to optic nerve and reduce inflammation | Not graded yet | |
| Bilberry Extract | Amount listed: 160–320 mg standardized extract daily | Anthocyanins support ocular blood flow and may have neuroprotective effects | Not graded yet | |
| Supporting stackListed as additions to the core | ||||
| Vitamin C | Amount listed: 500–1,000 mg daily | Antioxidant; some studies suggest high doses may lower IOP | Not graded yet | |
| Magnesium | Amount listed: 300–400 mg daily | May improve blood flow to optic nerve; muscle relaxation effects | Not graded yet | |
| Ginkgo Biloba | Amount listed: 120–240 mg standardized extract daily | Studied for eye blood flow; a small glaucoma trial found no effect on vision; bleeding risk with blood thinners | Not graded yet | |
| Coenzyme Q10 | Amount listed: 100–200 mg daily | Mitochondrial support; may protect retinal ganglion cells | Not graded yet | |
| Alpha-Lipoic Acid | Amount listed: 300–600 mg daily | Antioxidant that may protect ocular tissues from oxidative damage | Not graded yet | |
| Vitamin E | Amount listed: 200–400 IU daily | Antioxidant protection for ocular tissues | Not graded yet | |