This prospective, randomized, multicenter clinical trial compared the
safety and efficacy of the Provisc(R) and Healon(R) viscoelastics. Six
ty-one eyes of 61 patients had an extracapsular cataract extraction wi
th implantation of a posterior chamber intraocular lens with the aid o
f Provisc (n = 32) or Healon (n = 29). Mean changes in preoperative ve
rsus postoperative corneal thickness and intraocular pressure and the
incidence and magnitude of postoperative corneal edema and iritis were
not significantly different between the two groups. Observed complica
tions were considered consequences of the surgery and unrelated to vis
coelastic use. No adverse medical events occurred. These results indic
ate Provisc and Healon ave clinically equivalent in terms of safety an
d efficacy when used as surgical aids.