APR 01, 2017
PMMA Iris Expansion Ring
By Sergio Canabrava, MD
Video Journal of Cataract & Refractive Surgery
01:33
Cataract/Anterior Segment
The Canabrava Ring was developed by Dr. Sergio Canabrava from Brazil. The ring, now produced from PMMA, is helpful in cases of small pupils. Dr. Canabrava demonstrates how to insert and orient the ring with the help of a Sinskey hook.