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What is Pigment Dispersion Syndrome?

By D. Jeffress
Updated: May 17, 2024
Views: 13,297
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Pigment dispersion syndrome is a rare inherited condition in which flecks of pigment cells detach from the irises of the eyes. The flecks can potentially become lodged in drainage areas, which leads to pressure buildup, vision problems, and possibly glaucoma. Pigment dispersion syndrome is almost exclusively seen in males of Caucasian descent in their 20s and 30s. There is no cure for the disorder, but early detection and a combination of medical and surgical treatment can relieve symptoms and help prevent serious complications.

Doctors do not fully understand why pigment dispersion syndrome occurs, but it has been tied to an autosomal dominant genetic factor. The condition can be inherited if one or both parents carry an abnormal gene. Symptoms begin when pigment granules on the back of the irises spontaneously detach and float in the whites of the eyes in a fluid called the aqueous humor. In many cases, dispersion is minimal and the granules may or may not be visible during an eye exam.

Complications only occur when many granules detach and get stuck in the trabecular meshwork, the drainage canals for excess aqueous humor. If pigments block the canals, fluid builds up and leads to an increase in intraocular pressure. Over time, pressure can damage the optic nerve. Pigment dispersion syndrome can lead to eye and head pain, blurry vision, and nearsightedness. Permanent eye damage can occur if the condition is not diagnosed and treated in the early stages.

Since most people with pigment dispersion syndrome do not experience immediate symptoms, their conditions often go undetected. An eye doctor may notice signs of pigment detachment on a routine eye exam and then decide to conduct further diagnostic tests to rule out other problems. Several other disorders, including diabetes and some forms of cancer, can lead to pigment dispersion. A specialist can perform a series of tests, including ultrasounds and microscopic inspections, to confirm a diagnosis.

Treatment is not always necessary for mild forms of pigment dispersion syndrome. Patients who do not have symptoms are usually instructed to schedule regular eye exams to make sure their conditions do not worsen. If problems do occur, a doctor can prescribe eye drops to reduce the amount of aqueous humor and thereby relieve intraocular pressure. Laser surgery to remove pigment from drainage areas and repair damaged structures is necessary in severe cases. Most patients still have vision problems following surgery, but their eyesight often improves significantly within a few weeks.

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Discussion Comments
By accordion — On Sep 25, 2011

I have seen people with eyes like this. I thought the effect was really striking, but of course I didn't realize it could actually be dangerous. I suppose not every illness or disorder necessarily has to look bad to be bad.

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