Morphological changes 2 1/2 years after extracapsular cataract extraction with implantation of a posterior chamber lens

Abstract

Morphological changes and lens position were examined in 51 eyes of 51 patients 25 to 37 (mean 31) months after extracapsular cataract extraction with implantation of a posterior chamber lens in the ciliary sulcus. Ocular morphology was compared to a previously published examination of the same eyes performed 4 months after surgery. The anterior chamber depth, lens position and the position of the posterior lens capsule had remained unchanged. 'Iris bulging', i.e. a gonioscopically visible slight impression of the iris overlying the lens haptics, had increased from 0 to 42%, iridal transillumination defects from 34 to 46%, and pigment dispersion in the chamber angle from 46 to 72%. Twenty-four percent of the eyes had developed significant, capsulotomy-requiring opacification of the posterior lens capsule. We draw the following conclusions: The posterior chamber lens and the posterior lens capsule have reached their permanent positions by the fourth post-operative month. Implantation of a posterior chamber lens in the ciliary sulcus constitutes a constant stimulus for structural changes of the iris with subsequent dispersion of pigment on neighbouring ocular structures.

Results from the International Cataract Surgery Outcomes Study

“…1995). We reported rates of 5.5−6.1% in the other three sites, which is similar to contemporary findings in a UK survey (5.0%) (Desai 1993a) and reports from single Danish clinics (3.9% and 5.2%) (Naeser et al. 1990; Wegener et al.…”

“…The results seem valid as the reported USA rate of rupture of 1.9% was similar to two contemporary US studies reporting rates of 2.2% (Holland et al 1992) and 2.5% (Willerscheidt et al 1995). We reported rates of 5.5)6.1% in the other three sites, which is similar to contemporary findings in a UK survey (5.0%) (Desai 1993a) and reports from single Danish clinics (3.9% and 5.2%) (Naeser et al 1990;Wegener et al 1998). Rates have improved in Denmark and are currently much lower, at 0.5% (http://www.katbase.dk).…”

Evaluation of a flexible one‐piece open‐loop anterior chamber lens ‘Symflex 350B’ 3–4 years after implantation

“…Corneal oedema, CME and ARMD were the reason for poor vision, The VA was slightly better by ECCE than by ICCE but not statistically significant. Naeser et al (1990) and Calissendorff & Boos (1990) also did not find any difference. Our gonioscopic study showed that nearly all the haptics rested on the ciliary body band, and as reported by Reidy et al (1985) most haptics of ACLs do.…”

“…Also Naeser et al (1990) had all corneal oedema cases among the ICCEs. CME appeared in our ICCE-cases and this corresponds to the findings of Naeser et al (1990).…”

“…Also Naeser et al (1990) had all corneal oedema cases among the ICCEs. CME appeared in our ICCE-cases and this corresponds to the findings of Naeser et al (1990). Pham et al (1990) reported CME in 2 of 26 secondarily implanted eyes receiving the Symflex 350B.…”