MOISTURE DROPLET FORMATION ON THE POSTERIOR SURFACE OF INTRAOCULAR LENSES DURING FLUID AIR EXCHANGE

We investigated the conditions under which moisture droplets would for m on intraocular lens (IOL) posterior surfaces during fluid/air exchan ge procedures in rabbits implanted with silicone or poly(methyl methac rylate) (PMMA) IOLs. Moisture droplets did not form when the posterior capsule was intact, regardless of IOL material or infusion fluid temp erature. If a capsular tear was present, droplets formed with both IOL materials when balanced salt solution (BSS(R)) at ambient temperature was used as the infusion fluid. This effect was significantly more pr onounced with silicone IOLs, resulting in an immediate loss of visuali zation of the fundus. In these cases, visualization was quickly restor ed by applying a viscoelastic to the posterior IOL surface.