Pigment Dispersion Syndrome

Pigment Dispersion Syndrome (PDS) as seen in pigmentary dispersion is a type of open angle glaucoma caused by pigment graules gradually breaking free from the iris and cilliary epithelium, and deposited on the back corneal surface, lens and zonules, and obstructing the trabecular meshwork, which increases the intraocular pressure. Using the IR transillumination technique, we can see the iris transillumination defects from this pigment loss. Very dramatic images are often obtained that are not so evident with normal slit lamp exam techniques