Pseudoexfoliation Glaucoma

Learn the key signs, mechanisms, and exam traps of pseudoexfoliation glaucoma for NBEO, OKAP, and international eye-care boards.

Reviewed for accuracyAugust 1, 20263 min read

Warm-up

Pseudoexfoliation syndrome is characterized by deposition of fibrillar material on the:

Lesson

Pseudoexfoliation Glaucoma in 30 Seconds

Pseudoexfoliation glaucoma is the glaucomatous stage of pseudoexfoliation syndrome. Look for whitish fibrillar extracellular material, uneven trabecular pigmentation, poor dilation, and zonular weakness. Expect higher and more variable intraocular pressure than in primary open-angle glaucoma.

The Mechanism

Pseudoexfoliation syndrome is a systemic condition in which abnormal fibrillar extracellular material accumulates on anterior segment structures, including the lens capsule, zonules, ciliary body, and trabecular meshwork. Pseudoexfoliative material and liberated pigment accumulate within the trabecular meshwork, impairing its function and increasing aqueous outflow resistance. It is usually bilateral but clinically very asymmetric. Zonular deposition weakens lens support, causing phacodonesis or subluxation and increasing cataract surgery risk. Many patients with pseudoexfoliation syndrome never develop glaucoma, but they require lifelong monitoring because the risk is substantially increased.

Classic Examination Findings

Whitish fibrillar material on the anterior lens capsule: central disc, mid-peripheral clear zone, and peripheral ring, the classic bull's-eye pattern.
Poor pharmacologic pupillary dilation from iris involvement.
Sampaolesi's line: pigment anterior to Schwalbe's line on gonioscopy, uncommon in uncomplicated primary open-angle glaucoma.
Patchy or irregular trabecular meshwork pigmentation, usually more marked inferiorly.
Phacodonesis or lens subluxation from zonular weakness.

4 Facts Exams Always Ask

Pseudoexfoliation is more common in older patients and in Scandinavian and Northern European populations, but it is increasingly recognized worldwide. Variants in the LOXL1 gene are strongly associated with pseudoexfoliation syndrome, though they are neither necessary nor sufficient to cause disease.
Pseudoexfoliation glaucoma is often more severe than primary open-angle glaucoma, with higher peak pressures, greater pressure fluctuation, faster progression, and more difficult pressure control.
Cataract surgery carries an elevated risk because of poor pupillary dilation, zonular instability, and increased risk of intraoperative and postoperative complications including capsular phimosis.
Sampaolesi's line reflects abnormal anterior angle pigment deposition and is uncommon in uncomplicated primary open-angle glaucoma, helping to distinguish the gonioscopic picture.

The Classic Trap

The common mistake is missing pseudoexfoliation syndrome because subtle capsule material becomes obvious only after dilation. Dilate, then inspect the lens capsule and pupillary margin carefully. Do not label patchy angle pigment as pigmentary glaucoma. Pigmentary glaucoma typically has dense, more uniform trabecular pigmentation and midperipheral iris transillumination defects in a younger myopic patient. Pseudoexfoliation has poor dilation, fibrillar deposits, zonular signs, and irregular pigment in an older patient.

Clinical Pearl

A clinically unilateral case is not truly unilateral disease. Pseudoexfoliation is usually bilateral at a microscopic level, but one eye often declares itself first. Examine and monitor the fellow eye closely, and warn patients that the fellow eye may develop the condition over time.

Check yourself

Checkpoint 1

Which slit-lamp finding is most characteristic of pseudoexfoliation syndrome?

Checkpoint 2

Compared with typical primary open-angle glaucoma, pseudoexfoliation glaucoma often shows:

Clinical case

A 74-year-old patient has asymmetric cupping and an intraocular pressure of 31 mmHg in the right eye. The angle is open with irregular inferior pigmentation and a pigment line anterior to Schwalbe's line. After dilation, the lens shows a central white disc separated from a peripheral ring by a clear zone. The pupil dilates poorly.

What is the most likely diagnosis?

Explanation

The capsular bull's-eye pattern, poor pharmacologic dilation, Sampaolesi's line, patchy angle pigmentation, and markedly elevated intraocular pressure in an older patient identify pseudoexfoliation syndrome causing secondary open-angle glaucoma. Pigmentary glaucoma typically occurs in younger myopic patients with uniform dense trabecular pigmentation and iris transillumination defects.

Case discussion

The capsular bull's-eye pattern, poor dilation, Sampaolesi's line, patchy angle pigmentation, and marked pressure elevation in an older patient confirm pseudoexfoliation syndrome causing secondary open-angle glaucoma, not primary open-angle or pigmentary glaucoma.

Sources & Reviewer Info

Reviewed by Vasilis Inglezis: Optometrist and Ocular Oncology Imaging Specialist, Ocular Oncology Center, Athens, Greece. Last updated August 1, 2026.

References

Yüksel N, Yılmaz Tuğan B. "Pseudoexfoliation Glaucoma: Clinical Presentation and Therapeutic Options." Turkish Journal of Ophthalmology. 2023;53(4):247-256. doi: 10.4274/tjo.galenos.2023.76300.
Tomczyk-Socha M, Tomczak W, Winkler-Lach W, Turno-Kręcicka A. "Pseudoexfoliation Syndrome: Clinical Characteristics of Most Common Cause of Secondary Glaucoma." Journal of Clinical Medicine. 2023;12(10):3580.

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