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Influence of optic edge design, optic material, and haptic design on capsular bend configuration.
J Cataract Refract Surg. 2005 Oct; 31(10):1888-94.JC

Abstract

PURPOSE

To assess and classify capsular bend configuration at the optic rim and its association with posterior capsule (PCO) and anterior capsule opacification (ACO) and capsulorhexis contraction with various intraocular lenses (IOLs).

SETTING

Department of Ophthalmology, Medical University of Vienna, Vienna, Austria.

METHODS

A total of 659 post-cataract surgery eyes of 370 patients from different prospective randomized studies were evaluated. All eyes had standardized phacoemulsification surgery with implantation of an IOL in the capsular bag. The IOLs had a sharp or round optic edge design and were made of silicone, acrylic, or poly(methyl methacrylate) optic materials. One year postoperatively, the configuration of the capsular bend at the optic rim was assessed at the slitlamp, and standardized slitlamp images of ACO and fibrotic PCO were taken. One week, 1 year, and 3 years postoperatively, digital retroillumination images were taken for objective quantification of regeneratory PCO and the capsulorhexis area. The outcome measures were the type of capsular bend configuration, ACO score (0% to 100%), regeneratory PCO score (0 to 10), fibrotic PCO score (0 to 3), and amount of capsulorhexis contraction (mm(2)).

RESULTS

Four main types of capsular bend configuration were classified: parallel, "Y," right angle, and wrapping. The right-angle type was observed in the most cases (52%). Eyes with a wrapping capsular bend configuration had significantly less PCO, more capsulorhexis contraction, and more ACO than eyes with the other configurations. Wrapping capsule configuration was seen most often (55%) in round-edged silicone IOLs that had a thin optic rim.

CONCLUSION

The design and material of IOLs influenced the long-term capsular bend configuration at the optic rim. The right-angle type was the most common capsular bend configuration. Intraocular lenses with silicone optic material and a thin optic rim caused a wrapping capsule configuration and resulted in more capsulorhexis contraction and ACO, but less PCO.

Authors+Show Affiliations

Department of Ophthalmology, Medical University of Vienna, Vienna, Austria.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16338556

Citation

Sacu, Stefan, et al. "Influence of Optic Edge Design, Optic Material, and Haptic Design On Capsular Bend Configuration." Journal of Cataract and Refractive Surgery, vol. 31, no. 10, 2005, pp. 1888-94.
Sacu S, Findl O, Menapace R, et al. Influence of optic edge design, optic material, and haptic design on capsular bend configuration. J Cataract Refract Surg. 2005;31(10):1888-94.
Sacu, S., Findl, O., Menapace, R., & Buehl, W. (2005). Influence of optic edge design, optic material, and haptic design on capsular bend configuration. Journal of Cataract and Refractive Surgery, 31(10), 1888-94.
Sacu S, et al. Influence of Optic Edge Design, Optic Material, and Haptic Design On Capsular Bend Configuration. J Cataract Refract Surg. 2005;31(10):1888-94. PubMed PMID: 16338556.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of optic edge design, optic material, and haptic design on capsular bend configuration. AU - Sacu,Stefan, AU - Findl,Oliver, AU - Menapace,Rupert, AU - Buehl,Wolf, PY - 2004/03/14/accepted PY - 2005/12/13/pubmed PY - 2006/2/1/medline PY - 2005/12/13/entrez SP - 1888 EP - 94 JF - Journal of cataract and refractive surgery JO - J Cataract Refract Surg VL - 31 IS - 10 N2 - PURPOSE: To assess and classify capsular bend configuration at the optic rim and its association with posterior capsule (PCO) and anterior capsule opacification (ACO) and capsulorhexis contraction with various intraocular lenses (IOLs). SETTING: Department of Ophthalmology, Medical University of Vienna, Vienna, Austria. METHODS: A total of 659 post-cataract surgery eyes of 370 patients from different prospective randomized studies were evaluated. All eyes had standardized phacoemulsification surgery with implantation of an IOL in the capsular bag. The IOLs had a sharp or round optic edge design and were made of silicone, acrylic, or poly(methyl methacrylate) optic materials. One year postoperatively, the configuration of the capsular bend at the optic rim was assessed at the slitlamp, and standardized slitlamp images of ACO and fibrotic PCO were taken. One week, 1 year, and 3 years postoperatively, digital retroillumination images were taken for objective quantification of regeneratory PCO and the capsulorhexis area. The outcome measures were the type of capsular bend configuration, ACO score (0% to 100%), regeneratory PCO score (0 to 10), fibrotic PCO score (0 to 3), and amount of capsulorhexis contraction (mm(2)). RESULTS: Four main types of capsular bend configuration were classified: parallel, "Y," right angle, and wrapping. The right-angle type was observed in the most cases (52%). Eyes with a wrapping capsular bend configuration had significantly less PCO, more capsulorhexis contraction, and more ACO than eyes with the other configurations. Wrapping capsule configuration was seen most often (55%) in round-edged silicone IOLs that had a thin optic rim. CONCLUSION: The design and material of IOLs influenced the long-term capsular bend configuration at the optic rim. The right-angle type was the most common capsular bend configuration. Intraocular lenses with silicone optic material and a thin optic rim caused a wrapping capsule configuration and resulted in more capsulorhexis contraction and ACO, but less PCO. SN - 0886-3350 UR - https://www.unboundmedicine.com/medline/citation/16338556/Influence_of_optic_edge_design_optic_material_and_haptic_design_on_capsular_bend_configuration_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0886-3350(05)00613-9 DB - PRIME DP - Unbound Medicine ER -