Purpose: To carry out an experimental and descriptive study that exhibits the anatomical repercussions on the zonular apparatus after a capsular tension ring (CTR) is inserted.
Methods: CTRs were inserted in five swine eyes (four with forceps, one with an injector). Two additional eyes were left untouched for control purposes. The integrity of the suspensory ligament was examined by scanning electron microscopy.
Results: We did not observe alterations in the integrity of the zonular apparatus. The suspensory ligaments adopted a new fold configuration.
Conclusions: CTR insertion is a safe therapeutic tool to maintain the integrity of the lens zonules in elastic, large diameter capsular bags.
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http://dx.doi.org/10.4321/s0365-66912008001000005 | DOI Listing |
A 56-year-old woman presented with left blurring of vision for 6 months. She gave a history of previous left eye trauma for which she had undergone suturing of a corneal laceration. The right eye was 20/20 and normal.
View Article and Find Full Text PDFAdv Ophthalmol Pract Res
February 2023
Department of Ophthalmology, Shandong Provincial Hospital, Shandong University, Jinan, China.
Background: The lens zonule, a circumferential system of fibres connecting the ciliary body to the lens, is responsible for centration of the lens. The structural, functional, and positional abnormalities of the zonular apparatus can lead to the abnormality of the intraocular structure, presenting a significant challenge to cataract surgery.
Main Text: The lens zonule is the elaborate system of extracellular fibers, which not only centers the lens in the eye but also plays an important role in accommodation and lens immunity, maintains the shape of the lens, and corrects spherical aberration.
Klin Monbl Augenheilkd
August 2023
International Vision Correction Research Centre (IVCRC) und David J Apple International Laboratory for Ocular Pathology, Universitäts-Augenklinik Heidelberg, Deutschland.
Early (< 3 months) intraocular lens (IOL) dislocation occurs due to insufficient fixation in the capsular bag, while late dislocation (≥ 3 months) is due to increasing insufficiency of the zonular apparatus. Iris-fixated IOL (IFIOL) and suture- or sutureless-fixated scleral IOL (SFIOL) are currently the most commonly used methods when IOL exchange is indicated. Different methods of scleral fixation with or without sutures have been described.
View Article and Find Full Text PDFVestn Oftalmol
May 2023
Krasnov Research Institute of Eye Disease, Moscow, Russia.
The article presents authors' original methods of phaco surgery that can be used in disorders of the capsular-zonular apparatus of the lens. The cataract surgery techniques for lens subluxation developed and introduced into clinical practice allow using the most physiologically correct intracapsular intraocular lens (IOL) fixation in the vast majority of cases. The introduction of femtosecond laser at key stages of phacoemulsification in complicated clinical situations reduces the dependence of the results on the human factor and allows performing removal of complicated cataracts at a qualitatively new level.
View Article and Find Full Text PDFBackground: Modern preoperative diagnostics as well as current surgical techniques allow cataract and refractive surgery to deliver precise refractive results.Occasionally, unsatisfactory refractive and visual results occur despite all the care taken. In these cases, subsequent improvement is required to achieve the best final visual outcome.
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