• A sustained-grip, pressure-release, cross-action forceps was developed to obtain firm and steady holding of the contact lens during vitrectomy surgery. For use in conjunction with the forceps, a plano-concave fundus contact lens has been modified by having a circular groove cut around it.
Huamonte FU, Liang JC. Lens Holder and Modified Contact Lens for Pars Plana Vitrectomy. Arch Ophthalmol. 1981;99(1):154. doi:10.1001/archopht.1981.03930010156024