Posterior chamber myopia lenses in phakic eyes

Objective: To determine the best technique for implanting a hypernegative intraocular lens (IOL) in the posterior chamber of phakic eyes to neutralize high myopia and its results. Setting: Robert Koch Hospital, Hannover-Gehrden, Germany. Methods: We implanted the of 37 patients between prospectively. Results: To avoid marked decentration, the IOL should merely touch the ciliary sulcus. Its best length should equal the horizontal diameter of the cornea (white to white). Iritis from implantation trauma was avoided by intravenous administration of 250 mg prednisone preoperatively. When inserting the Chiron-Adatomed myopia IOL, we avoided putting pressure on the crystalline lens with the spatula. In 53 eyes, the difference between precalculated postoperative refraction and achieved postoperative refraction at 3 months was +0.07 +/- 1.05 diopters (D) (mean +/- SD). No eye deviated more than 2.80 D. Eleven of 69 eyes had a follow-up of fewer than 6 months and 13 had marked preoperative cortical opacities. Eight of the remaining 45 eyes with clear or almost clear cortexes showed a central subcapsular opacity after 1 to 2 years, probably IOL induced. Conclusion: Use of the Chiron-Adatomed IOL should be confined to older patients with early cataract until its role as the cause of opacities has been clarified by further observation.