Pseudophakic Pupillary Block Workup

Updated: Jun 10, 2020
  • Author: Mitchell V Gossman, MD; Chief Editor: Douglas R Lazzaro, MD, FAAO, FACS  more...
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Laboratory Studies

The following laboratory studies may be used:

  • Blood sugar

  • Clotting and bleeding time


Imaging Studies


Routine B-scan helps to identify the presence of a fallen nucleus, retained cortical matter, blood, and exudates in the vitreous.

Usually, choroidal hemorrhages can be seen easily.

A high-quality B-scan may identify anterior movement of the posterior vitreous compatible with aqueous misdirection.

Optical coherence tomography (OCT)

It helps to document the relationship between the periphery of the iris and the angle of the anterior chamber. It works best if the cornea is clear.

Ultrasound biomicroscopy

It is helpful in visualization of the structures behind the opaque iris. The position of the intraocular lens and the fluid space available behind the iris and around the ciliary body allow the peripheral anterior synechiae (PAS) to be easily seen.