Glaucoma: Separating Myth From Guidance
Glaucoma: what people commonly get wrong, set against what published UK guidance says.
It destroys peripheral vision painlessly and irreversibly, and is usually found on a routine eye test rather than by the person affected.
Key takeaways
- Common type: primary open-angle glaucoma, symptomless until advanced
- Main risk factors: age, family history, African or Caribbean origin, short sight
- Most useful single change: Have regular eye tests, particularly over 40.
- Commonest mistake: Stopping drops because your vision seems unchanged.
- See a doctor if any of the signs under "When to speak to a doctor" below apply to you.
What the guidance actually says
Before the corrections, the published figures. Everything below is measured against these.
| Measure | Figure |
|---|---|
| Common type | primary open-angle glaucoma, symptomless until advanced |
| Main risk factors | age, family history, African or Caribbean origin, short sight |
| Treatment | usually eye drops to lower pressure, used lifelong |
| Vision already lost | cannot be restored |
Where people go wrong
All of these come up regularly. All of them run against the published position.
- Stopping drops because your vision seems unchanged
- Skipping eye tests because you have no symptoms
- Assuming good central vision means healthy eyes
What to do instead
- Have regular eye tests, particularly over 40
- Tell your optometrist about any family history
- Use prescribed drops exactly as directed, every day
- Ask first-degree relatives to be tested; they qualify for free tests
The part that is genuinely uncertain
Guidance changes, and it changes because evidence does. The figures above reflect current UK guidance from the bodies named at the foot of this page; where those bodies revise their position, theirs is the account to follow rather than this one.
Where to go next
- Glaucoma: What Published Guidance Supports
- Understanding Glaucoma: A Plain-English Explainer
- Glaucoma — the reference entry
- The Evidence on Cataracts, Without the Hype
- Macular Degeneration: What the Evidence Actually Says
When to speak to a doctor
Call 999 or go to A&E for a sudden severe painful red eye with blurred vision, haloes around lights, headache, nausea and vomiting — acute angle-closure glaucoma is an emergency and can destroy sight within hours. Seek same-day advice for any sudden vision change.
Where this comes from
How this page was put together
Every figure, recommendation and warning above is taken from the guidance named in Where this comes from. Nothing on this page is inferred, summarised or generalised beyond what those bodies publish: where they give a number, it is their number, and where they are silent, so are we. Pages are rebuilt whenever the underlying record changes. Sign-off by a named clinician, where it has happened, is shown at the top of the page along with the date.
Medical disclaimer
This article is general information, not medical advice. It cannot account for your own history, medication or circumstances. Always speak to a GP, pharmacist or another qualified health professional before making changes that affect your treatment, and never delay seeking medical advice because of something you have read here. In an emergency, call 999.
Spotted something wrong? Report an error on this page. We correct on the page and say what changed.
