Curr Opin Ophthalmol
February 2025
Purpose Of Review: In contrast to current clinically used tamponades including oils and gases, hydrogels offer a vitreous replacement that has the potential to present a niche for vitreous cells and elevate vitreous substitutes to the level of tissue engineering. This article, therefore, highlights and discusses recent hydrogel-based vitreous replacement strategies as well as the latest progress on vitreous cells, towards the development of a cellularized vitreous substitute.
Recent Findings: A variety of different crosslinked hydrogel systems have been recently investigated as preformed and in situ forming vitreous substitutes, based on biopolymers and/or synthetic polymers.
Retina
December 2024
Purpose: Propose new terminology and evaluate the effectiveness of Therapeutic Refractive Vitrectomy (TRV) for selective removal of vitreous floaters and opacities (VFO) utilizing Standardized Kinetic Anatomical Functional Testing of VFO (SK VFO Test) and new ultra widefield (UWF) OCT imaging techniques.
Methods: Retrospective analysis. Twenty eyes underwent TRV for symptomatic VFO.
As the medium for intravitreal drug delivery, the vitreous body can significantly influence drug delivery because of various possible liquefaction geometries. This work innovatively proposes a varying-porosity approach that is capable of solving the pressure and velocity fields in the heterogeneous vitreous with randomly-shaped liquefaction geometry, validated with a finite difference model. Doing so enables patient-specific treatment for intravitreal drug delivery and can significantly improve treatment efficacy.
View Article and Find Full Text PDFJ Vitreoretin Dis
July 2024