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November 1991

Discoloration of a Silicone Intraocular Lens 6 Weeks After Surgery

Author Affiliations

Marshalltown, Iowa

Arch Ophthalmol. 1991;109(11):1494. doi:10.1001/archopht.1991.01080110028013

To the Editor.  —In the July 1991 issue of the Archives, Milauskas1 reported 15 cases of discoloration of silicone intraocular lenses (IOLs). I have implanted silicone IOLs since July 1985 and have never seen (or at least never recognized) a case of silicone IOL discoloration. For the first 5 years, almost all the lenses that I used were manufactured by STAAR Surgical Co, Monrovia, Calif. Since July 1990, I have mainly used the AMO SI 18 series silicone IOLs.On May 2, 1991, an uneventful implantation of a 22.0-diopter, 14.00-mm silicone IOL (AMO Model SI-18NGB, serial 9103431686) was performed on an 85-year-old woman. At the 6-week postoperative examination (before I was aware of Dr Milauskas' report), routine slit-lamp examination revealed that this lens had a brownish discoloration centrally. It resembled grade II brown nuclear sclerosis. At that time, the patient's corrected visual acuity was 20/40, and a fluorescein angiogram