Purpose: To evaluate dynamic changes in ciliary parameters and Implantable Collamer Lens V4C (ICL) (STAAR Surgical) haptic position using mydriatic and miotic agents and their effects on the central and peripheral vault.
Methods: This study involved 80 eyes from 40 consecutive patients (mean age: 28.05 years; range: 19 to 42 years) examined 3 months after ICL implantation. Patients were randomly assigned to either a mydriasis group or a miosis group. Ultrasound biomicroscopy was used to measure the following parameters at baseline and after pharmacological induction with tropicamide or pilocarpine: ciliary process length (CPL), iris ciliary angle (ICA), final tip point of the ICL haptic (ftICL haptic), central vault (c-vault), mid-peripheral vault (m-vault), and peripheral vault (p-vault).
Results: In the mydriatic group, the proportion of eyes with all ICL haptics in the ciliary sulcus increased from 70.0% to 77.5% after tropicamide administration, whereas in the miotic group, this proportion decreased from 67.5% to 57.5% after pilocarpine administration. The CPL and ftICL haptic increased significantly in the mydriatic group (all < .01) but decreased in the miotic group (all < 0.01). Conversely, the ICA decreased significantly in the mydriatic group and increased in the miotic group (all < .01). The correlation analysis showed no significant relationship between changes in c-vault, m-vault, and p-vault with alterations in CPL, ICA, and ftICL haptic in both groups.
Conclusions: Haptic position contributes to the movement of the ICL optical zone during accommodation, but changes in haptic position were not significantly correlated with changes in the vault. .
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http://dx.doi.org/10.3928/1081597X-20241126-02 | DOI Listing |
Purpose: To evaluate dynamic changes in ciliary parameters and Implantable Collamer Lens V4C (ICL) (STAAR Surgical) haptic position using mydriatic and miotic agents and their effects on the central and peripheral vault.
Methods: This study involved 80 eyes from 40 consecutive patients (mean age: 28.05 years; range: 19 to 42 years) examined 3 months after ICL implantation.
Retina
January 2025
National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China.
Purpose: Anterior chamber air injection (ACAI) is a surgical technique used to decrease the occurrence of postoperative intraocular lens (IOL) haptic dislocation following phacovitrectomy with gas/air tamponade. The impact of this technique on IOL stability remains uncertain, prompting the design of this study to investigate further.
Methods: This study included 51 eyes of 51 patients who underwent phacovitrectomy with gas/air tamponade.
Sci Rep
December 2024
Visual Optics Lab Antwerp (VOLANTIS), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
In cataract surgery, post-surgical stability of the intraocular lens plays a major role. This study aims to explore how the size and decentration of the capsulorhexis affect intraocular lens decentration and tilt by using numerical methods. Finite element models included zonules, ciliary body, capsular bag, and an IOL with two open-loop haptics were built.
View Article and Find Full Text PDFBiomimetics (Basel)
December 2024
Institute of Instrument Science and Engineering, Southeast University, Nanjing 210096, China.
Indian J Ophthalmol
January 2025
Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India.
Scleral-fixated intraocular lens (SFIOL) is a widely used technique for IOL implantation in patients where capsular support is insufficient. Most surgeons have shifted away from sutured to sutureless SFIOL techniques where haptics of a multifocal IOL are inserted in scleral tunnels/flaps. Large-scale publications have shown wide variation in the refractive status of eyes post-SFIOL even in the best of the hands.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!