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Pulsed Ultrasound-Mediated Drug Delivery Enhancement Through Human Sclera.
Transl Vis Sci Technol
January 2025
Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China.
Purpose: The purpose of this study was to characterize whether pulsed ultrasound (PUS) affects transscleral drug delivery.
Methods: Fluorescein sodium (NaF, 376 Da) and fluorescein isothiocyanate-conjugated dextran 40 (FD-40, 40 kDa) were used as model drugs. Human sclera grafts were placed in modified Franz diffusion cells and were treated by PUS (1 megahertz [MHz], 0.
Transscleral Pars Plana Choroid Ablation Using the Iridex Laser System Yields Improvements for Surgical Insertion of the Port Delivery Implant in a Minipig Model.
Retina
January 2025
Department of Safety Assessment, Genentech, Inc, South San Francisco, California 94908.
Purpose: To evaluate an alternative surgical approach for Port Delivery System with ranibizumab (PDS) implant and a novel application of Iridex laser system in Gottingen minipig model.
Methods: A total of seventeen male minipigs (Part 1: 9 animals in non-recovery and Part 2: 8 animals observed for 8-days post-surgery Part 2) received PDS implant insertion into each eye. The effect of Iridex 810 nm infrared diode laser with varying energy (power or duration) on transscleral pars plana ablation, surrounding ocular tissue and postsurgical vitreous hemorrhage (VH) was investigated.
Long-term observation of the in vivo safety of a new design of phakic refractive lens.
BMC Ophthalmol
January 2025
Fudan University Eye Ear Nose and Throat Hospital, Shanghai, China.
Background: To evaluate the biosafety, reduction in anterior capsule opacification, and fluctuation in intraocular pressure (IOP) of a new phakic refractive lens (PRL) with a sinusoidal drainage groove design.
Methods: This self-controlled experiment was performed on eight eyes of four rabbits. Each rabbit was implanted with a sinusoidal PRL (PRL-S5) in the right eye and a conventional posterior chamber PRL (PC-PRL) in the left eye.
Long-term outcomes of scleral fixated black diaphragm intraocular lens in eyes with combined aphakia and aniridia.
Eur J Ophthalmol
January 2025
Dept of Vitreoretinal Diseases, Sankara Nethralaya, Chennai, India.
Article Synopsis
- The study evaluated the long-term outcomes of scleral fixation of aniridic black diaphragm intraocular lenses (BDIOL) in 38 eyes affected by aniridia and aphakia due to trauma or congenital conditions.
- After an average follow-up of 28 months, there was a significant improvement in visual acuity, and patients reported reduced glare and photophobia, though some experienced complications like elevated intraocular pressure and corneal decompensation.
- The findings suggest that scleral fixation of BDIOL is an effective solution for patients lacking capsular support, providing good vision quality with a low rate of complications, regardless of prior surgical history.
Perivascular Chorioretinal Atrophy: an Unusual Feature in Pathologic Myopia Eyes.
Am J Ophthalmol
December 2024
Department of Ophthalmology, New Civil Hospital, Strasbourg University Hospital, FMTS, Strasbourg, France. Electronic address:
Purpose: To describe a new feature in pathologic myopia: perivascular patchy chorioretinal atrophy (PVCA) DESIGN: Cross-sectional study METHODS: 604 eyes of 312 highly myopic patients followed at Strasbourg University Hospitals were reviewed for the presence of PVCA lesions. Demographic, clinical, and paraclinical data (ultra-widefield retinography, optical coherence tomography (OCT), fluorescein and indocyanine green angiography images) were analyzed. Controls were matched for age, sex, and axial length (AL).
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