An analysis of semiflexible, closed-loop anterior chamber intraocular lenses

Reidy, James J.; Richey, Mark A.; Apple, David J.; Mamalis, Nick; Googe, Joseph M.; Olson, Randall J.; Mackman, Gary

doi:10.1016/s0146-2776(85)80059-8

Cited by 54 publications

(4 citation statements)

References 26 publications

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“…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. Malposition of the haptic feet in the chamber angle and tissue around the feet were more often seen in closed-loop ACLs by Ekdawy (1987) and Naeser et al (1987).…”

Section: Discussionsupporting

confidence: 84%

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

Anmarkrud

Bergaust

Bulie

et al. 1993

Acta Ophthalmologica

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One-piece, open-loop flexible anterior chamber lens, Symflex 350B, was implanted in 90 eyes, 26 after extracapsular cataract extraction (ECCE), and 57 after intracapsular cataract extraction (ICCE), and in 7 cases the operation was done as a secondary implantation. The cohort was followed 3.4-4.4 years, 68 eyes were included in the last examination. At the final examination 7 eyes (10.29%) had developed corneal oedema. 6 eyes had undergone ICCE and one eye had been secondarily implanted. In no case was vaulting or malposition of the intraocular lens (IOL) found. The decompensation appeared shortly after the operation in 2 cases, one case being a secondary implantation between 1 year and 3-4 years after implantation. All extracapsularly operated eyes showed normal corneas, but the difference was not statistically significant. Neither ovalling of the pupils, nor tissue growth over the haptic feet in the anterior chamber angle, nor the visual acuity (VA) changed significantly from the 1-year to the 3-4-years examination. The intraocular pressure (IOP), however, was statistically significantly lowered 3-4 years postoperatively.

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Section: Discussionsupporting

confidence: 84%

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

Anmarkrud

Bergaust

Bulie

et al. 1993

Acta Ophthalmologica

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“…T o date, no precise means of measuring the diameter of the anterior chamber has been deviced (Reidy et al 1985;Alpar 1980). In our study the undersized, mobile lenses tended to rotate and to cause corneal oedema by contact with the endothelium.…”

Section: Discussionmentioning

confidence: 67%

“…It also illustrates the fact that it is difficult to distinguish between minimal degrees of iris tucking and lens haptics correctly positioned at the ciliary body band, but encircled by iris-haptic adhesions. Reidy et al (1985) concluded that most haptics of ACL's come to rest immediately posterior to the relatively inert scleral spur in the ciliary body recess, thereby concentrating the mechanical forces on the delicate tissues in the angle recess or at the iris root.…”

Section: Discussionmentioning

confidence: 99%

Morphological changes and lens position 2½ years after intracapsular cataract extraction with implantation of a semiflexible anterior chamber lens

Næser

Hansen

Nissen

1987

Acta Ophthalmologica

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Morphological changes and lens position were examined in 51 patients 25 to 38 (mean 30) months after intracapsular cataract extraction (ICCE) with implantation of the semiflexible, 3M, style 70, anterior chamber lens. Morphological changes presumably associated with the ICCE proper were: iris transillumination defects (68.6%), rupture of anterior hyaloid membrane (20%), detachment of posterior vitreous (42.9%) and anterior synecchiae (13.7%). The implant-related morphological changes were caused by iris tucking (19.6%), small, mobile lenses causing endothelial disturbance (9.8%), iris-haptic adhesions and progressive ovalling of pupillary form. The present morphological changes were compared with a previously published examination of the same patients performed 4 months after surgery: 9 eyes without tissue changes around the lens feet at the previous follow-up now had iris-haptic adhesions involving from 1 to 4 lens feet. In 8 eyes the iris-haptic adhesions had progressed. Compared with the previous examination the fraction of eyes with tissue changes at the lens feet had risen from 47.1 to 64.7%, while the number of eyes with oval pupils had increased from 54.9 to 80.4%. Contact between lens haptic and iris root seems to constitute a constant stimulus for structural changes of the iris.

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“…Die Implantation einer Vorderkammerlinse erfordert ebenfalls einen großen Tunnel, verbunden mit der Gefahr einer postoperativen Entzündung und der Induktion eines Astigmatismus. Die Risiken der Endotheldekompensation und des zystoiden Makulaçdems [7,9,11] [13]. Insbesondere die Quote eines zystoiden Makulaçdems lag nach zwei Jahren bei der Irisnahtfixation nur knapp halb so hoch wie bei der Vorderkammerlinse und der transskleral nahtfixierten Sekundärlinse.…”

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