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Retrobulbar anesthesia with and without hyaluronidase in extracapsular cataract surgery. A prospective, randomized,
J Krohn1, J H Seland, G Høvding
1Department of Ophthalmology, University of Bergen, Norway.
Acta Ophthalmologica
|December 1, 1993
Abstract:
Eighty patients with senile cataract were subjected to a planned extracapsular cataract extraction (ECCE) with implantation of a posterior chamber intraocular lens. Retrobulbar anesthesia was administered by injection of 4 mg lidocaine 2% with adrenalin. In 40 patients 150 I.U. hyaluronidase (Kinetin) was added to the anesthesia. The hyaluronidase group had a significantly lower frequency of iris prolapse, and deeper anterior chamber, both before and after expression of the lens nucleus. Possible mechanisms explaining the beneficial effect of hyaluronidase in extracapsular cataract surgery are discussed.