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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 .
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]
Nd:YAG laser peripheral iridotomy (LPI) may be used in patients susceptible to or affected by angle closure glaucoma or pigment dispersion syndrome. During laser iridotomy, laser energy is used to make a small, full-thickness opening in the iris to equalize the pressure between the front and back of the iris, thus correcting any abnormal ...
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.
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]
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
Those with moderate amounts of myopia are more likely to have pigment dispersion syndrome or pigmentary glaucoma. [84] High myopia usually describes myopia of −6.00 or more. [65] [85] People with high myopia are more likely to have retinal detachments [86] and primary open angle glaucoma. [87]
Pseudoexfoliation syndrome, often abbreviated as PEX [1] and sometimes as PES or PXS, is an aging-related systemic disease manifesting itself primarily in the eyes which is characterized by the accumulation of microscopic granular amyloid-like protein fibers. [2] Its cause is unknown, although there is speculation that there may be a genetic ...