Pseudoexfoliation Glaucoma
A common secondary glaucoma caused by flaky, dandruff-like material that accumulates in the eye and clogs the drainage angle — often more aggressive and more resistant to treatment than typical open-angle glaucoma.
Overview
Pseudoexfoliation syndrome occurs when the eye produces abnormal, flaky protein material that deposits on the lens capsule, the pupil border, and the drainage angle. Over time this material — along with pigment it dislodges — clogs the trabecular meshwork and raises eye pressure, leading to pseudoexfoliation glaucoma (XFG).
It is one of the most common identifiable causes of secondary open-angle glaucoma worldwide, and tends to behave more aggressively than typical primary open-angle glaucoma.
Symptoms
- Usually no symptoms until pressure is significantly elevated or damage is advanced
- Occasionally noticed as poor pupil dilation during a routine eye exam
- Vision changes from cataract, which often develops earlier and can progress faster in these patients
- In advanced cases, peripheral vision loss similar to other glaucomas
How Common Is It?
Pseudoexfoliation syndrome is one of the most common causes of secondary glaucoma globally, with prevalence rising sharply with age — it is uncommon before 60 but becomes progressively more frequent afterward, and it is estimated that roughly a quarter to half of people with pseudoexfoliation syndrome eventually develop elevated pressure or glaucoma.
Prevalence varies significantly by ancestry and geography, with notably higher rates reported in Scandinavian and some Mediterranean and Middle Eastern populations.
Genetics & Risk Factors
Variants in the LOXL1 gene are strongly associated with pseudoexfoliation syndrome and are the most well-established genetic link identified for any glaucoma-related condition to date, though having the variant does not guarantee the disease will develop.
A family history of pseudoexfoliation increases your own risk, and the condition can also be associated with broader connective-tissue and cardiovascular findings in some patients, which is why your specialist may ask about family and general health history.
Ocular Findings on Exam
The classic exam finding is flaky, gray-white material visible on the front of the lens after the pupil is dilated, often in a distinctive central disc and peripheral ring pattern, along with pigment loss from the pupil border.
Gonioscopy typically shows a heavily and patchily pigmented drainage angle, and the pupil often dilates poorly compared to a normal eye, which can make both the exam and any future cataract surgery more challenging.
Testing & Diagnosis
- Dilated slit-lamp exam looking for exfoliation material on the lens and pupil margin
- Gonioscopy to assess angle pigmentation and confirm it is open
- Frequent or diurnal IOP checks, since pressure can fluctuate more than in typical open-angle glaucoma
- OCT of the optic nerve fiber layer and visual field testing to assess for damage
- Assessment of zonular support (lens stability) prior to any future cataract surgery
Treatment Options
Eye Pressure-Lowering Drops
Standard glaucoma drop classes are used first, though pseudoexfoliation glaucoma is somewhat more likely to need more than one medication to control pressure.
Selective Laser Trabeculoplasty (SLT)
Often effective here because of the heavily pigmented angle, though because the meshwork is already compromised, effects can wear off sooner than in typical open-angle glaucoma and re-treatment or escalation may be needed.
Glaucoma Surgery
Trabeculectomy or tube shunt surgery is needed more often and sooner than in typical primary open-angle glaucoma, reflecting its more aggressive course.
Cataract Surgery Planning
Because pseudoexfoliation weakens the zonules that support the natural lens, cataract surgery is planned with extra precautions (such as capsular support devices) to reduce the risk of lens instability.
How This Differs From Other Glaucomas
Pseudoexfoliation glaucoma tends to run a faster, more aggressive, and more pressure-fluctuant course than typical primary open-angle glaucoma, so monitoring intervals are often shorter and the threshold to move from drops to laser to surgery is lower.
Unlike most other glaucomas, pseudoexfoliation directly affects the health of the lens and its supporting zonules, so it changes the risk calculus and technique for cataract surgery in a way that, for example, typical open-angle glaucoma does not.
Frequently Asked Questions
What exactly is the flaky material?
It's an abnormal fibrillar protein material (exfoliation material) that the eye produces and deposits on the lens capsule, pupil margin, and drainage angle. Its exact origin is still studied, but it behaves like a whole-eye (and sometimes whole-body) connective tissue condition.
Is this more common in certain groups?
Yes. Pseudoexfoliation is especially common in people of Scandinavian, Mediterranean, and Middle Eastern descent, and becomes steadily more common with age after 60–70.
Why does my surgeon mention this before cataract surgery?
Pseudoexfoliation weakens the zonules (the tiny fibers that hold the natural lens in place), so cataract surgery requires extra precautions to avoid complications like lens instability.
Is it more serious than regular open-angle glaucoma?
It can be. Pseudoexfoliation glaucoma tends to run a more aggressive course, with higher and more fluctuating eye pressure and a greater chance of eventually needing laser or surgery rather than drops alone.
See a glaucoma specialist. Dr. Robert Gunzenhauser is Harvard-educated and UCLA fellowship-trained in glaucoma, providing expert diagnosis and treatment for Pseudoexfoliation Glaucoma at Inland Glaucoma Center in Upland, CA.