The 3M style 30 intraocular lens was introduced in January 1980 as a closed-loop, uniplanar posterior chamber lens intended for in-the-bag implantation. Between February 13, 1980, and February 28, 1982, 584 of these lenses were implanted by one of us. Except for a few lost to follow-up, these patients have now had a minimum of two years of follow-up under our care. Using a microcomputer-based data-base management system, we have generated graphic and tabular presentations of follow-up, age at time of surgery, best postoperative visual acuity, preoperative and postoperative pathology, and surgical events and complications. A brief discussion of the advantages of the in-the-bag location and the style 30 design characteristics is included. We have been able to profile, compare, and correlate numerous preoperative, operative, and postoperative parameters.
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