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Pigment dispersion syndrome (PDS) is an eye disorder that can lead to a form of glaucoma known as pigmentary glaucoma. It takes place when pigment cells slough off from the back of the iris and float around in the aqueous humor .
Pigment dispersion syndrome – a condition characterized by loss of pigmentation from the posterior iris surface which is disseminated intraocularly and deposited on various intraocular structures, including the anterior surface of the iris. [medical citation needed]
Elevated intraocular pressure can be caused by pigment dispersion, uveitis, hyphema or direct blocking of aqueous humor drainage system. [3] UGH syndrome is most commonly caused by anterior chamber IOLs and sulcus IOLs, but it can be seen with any type of IOL, including posterior chamber lenses and cosmetic iris implants.
Overproduction of pigment by these cells can block the trabecular meshwork through which fluid drains from the eye. The increased fluid in the eye leads to increased pressure, which can lead to glaucoma. In humans, this is sometimes known as pigment dispersion syndrome. [2]
During gonioscopy (where the structures of the eye's anterior segment are examined), if an abundance of brown pigment is seen at or anterior to Schwalbe's line, a Sampaolesi line is said to be present. [1] [2] [3] The presence of a Sampaolesi line can signify pigment dispersion syndrome or pseudoexfoliation syndrome. [4] [5]
Pigment dispersion syndrome; Pneumosinus dilatans; Post-LASIK ectasia; Posterior ischemic optic neuropathy; Posterior vitreous detachment; Presumed ocular histoplasmosis syndrome; Progressive bifocal chorioretinal atrophy; Progressive outer retinal necrosis; Proliferative vitreoretinopathy; Pseudoexfoliation syndrome; Pseudomyopia; Pseudostrabismus
Pigment dispersion syndrome, an affliction of the eye; Polydioxanone, a type of absorbable suture; Pleomorphic dermal sarcoma, a form of histiocytoma; Political parties
Sampaolesi line: Hyperpigmentation at, or anterior to, Schwalbe's line, which can signify pigment dispersion syndrome or pseudoexfoliation syndrome. Etymology