Ophthalmology Times
The claims records of 14,491 Medicare beneficiaries with glaucoma who were treated with an incisional surgery, either primary trabeculectomy (PT), trabeculectomy in the presence of scarring from previous ocular surgery or trauma (TS), or implantation of a glaucoma drainage device (GDD) between 1994 and 2003 were evaluated by Frank A. Sloan, PhD, and colleagues.