A percentage in a headline can sound like a definitive answer. Before applying it to your own health, ask who was studied and which outcome the researchers actually measured.
01 · What was studied
In 2018, Downie and Vingrys analysed data from 105 adults without glaucoma, drawn from two randomised trials. After three months, the Omega 3 group showed lower intraocular pressure relative to placebo. Read the original research.
02 · What it does not establish
The finding concerned eye pressure: it did not establish that supplements prevented glaucoma. The authors called for further research. Conclusions and limitations. When reading a health story, separate the measured result from the promise in the headline.
03 · Eye examinations matter
Glaucoma can begin without symptoms and damage the optic nerve. An eye examination helps assess it; treatment can involve eye drops, laser or surgery. Information from the National Eye Institute. Do not replace prescribed treatment with a supplement.
04 · Three questions for your appointment
What is my personal risk? When should I return for checks? Are the products I take compatible with my treatment? Bring the product names and any relevant reports: a specific conversation is more useful than an isolated percentage.
Updated on 7 October 2026. General information.