POSTERIOR CHAMBER MYOPIA LENSES IN PHAKIC EYES

Objective: To determine the best technique for implanting a hypernegat ive 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 b etween prospectively. Results: To avoid marked decentration, the IOL s hould merely touch the ciliary sulcus. Its best length should equal th e horizontal diameter of the cornea (white to white). Iritis from impl antation trauma was avoided by intravenous administration of 250 mg pr ednisone 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 refra ction and achieved postoperative refraction at 3 months was +0.07 +/- 1.05 diopters (D) (mean +/- SD). No eye deviated more than 2.80 D. Ele ven of 69 eyes had a follow-up of fewer than 6 months and 13 had marke d preoperative cortical opacities. Eight of the remaining 45 eyes with clear or almost clear cortexes showed a central subcapsular opacity a fter 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.