The Role of Dynamic Ultrasound Biomicroscopy in Defining Laser Treatment in Pigment Dispersion Syndrome/ Pigmentary Glaucoma. A Case Series

  • Atif Anwar Consultant in Charge, Sarah Eye Clinic, Feroz Hospital, Medical Road, Aligarh-202001, Uttar Pradesh
  • Tirupathi Nath Lecturer, Dept. of Ophthalmology, S N Medical College, MG Road, Agra- 282002. Uttar Pradesh
Keywords: Laser Treatment, Glaucoma, Biomicroscopy


Background: To assess utility of Dynamic UBM (in light & dark room illuminations) in deciding laser Iridotomy in Pigment Dispersion Syndrome(PDS)/Pigmentary Glaucoma (PG)

Method: Prospective interventional cohort study. Eyes with PDS/PG underwent UBM under light & dark by same operator. Presence of Iris Concavity(IC), Iridolenticular Contact(ILC), Iridozonular Contact(IZC) &  Irido-Ciliary Process Contact(ICC) were quantified & LASER Iridotomy was advised. Post-LASER, UBM was redone at 4-6 weeks & later.

Results: UBM was done in 10 eyes of 6 pts with PDS/PG. 4 eyes (40%-group 1) had IC under light with ILC. In 6 eyes (60%; group2) UBM was redone under dark, picking up IC in 5 eyes (50%). In group 2,5 eyes had ILC (1 eye each with IZC & ICC also).8 of the advised 9 eyes underwent Nd-YAG PI. 6(75%) eyes showed reversal of reverse pupillary block at mean follow up of 11.33wks.

Conclusion: UBM in different room illuminations can be useful in deciding LASER treatment in PDS/PG to restore normal iris configuration.


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How to Cite
Anwar A, Nath T. The Role of Dynamic Ultrasound Biomicroscopy in Defining Laser Treatment in Pigment Dispersion Syndrome/ Pigmentary Glaucoma. A Case Series. Int Arch BioMed Clin Res [Internet]. 2018Feb.11 [cited 2021Jan.26];2(3):65-7. Available from: