Vitreous Substitute
Vitreous Substitute - Related Videos
04:41
Whole Vitreous Humor Dissection for Vitreodynamic Analysis
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2015
The goal of this protocol is to show an effective technique to isolate whole, intact vitreous core and cortex from post mortem enucleated porcine eyes.
14:21
Nucleophilic Substitution
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2023
Source: Vy M. Dong and Daniel Kim, Department of Chemistry, University of California, Irvine, CA Nucleophilic substitution reactions are among the most fundamental topics covered in organic chemistry. A nucleophilic substitution reaction is one where a nucleophile (electron-rich Lewis base) replaces a leaving group from a carbon atom. SN1 (S = Substitution, N = Nucleophilic, 1 = first-order kinetics) SN2 (S = Substitution, N = Nucleophilic, 2 = second-order kinetics) This video will help to...
04:36
Implantation Protocol of the Foldable Capsular Vitreous Body for Complex Vitreoretinal Surgery
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2026
The Foldable Capsular Vitreous Body (FCVB) is an intraocular implant that encapsulates silicone oil within a flexible capsule to reduce silicone oil-related complications. This protocol describes the surgical implantation of the FCVB via scleral incision for the treatment of complex retinal detachment and ocular trauma.
05:05
Dissection of Human Vitreous Body Elements for Proteomic Analysis
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Cited by 28 •
2011
This video shows an effective technique for differentiating and dissecting the various semi-transparent structures of the human vitreous body in post mortem eyes.
02:39
Evisceration of Mouse Vitreous and Retina for Proteomic Analyses
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Cited by 39 •
2011
The dissection technique illustrates evisceration of the vitreous, retina, and lens from the mouse eye, separation by centrifugation, and characterization with protein assays.
FAQs
Gas bubbles provide temporary retinal tamponade by expanding within the eye, whereas silicone oil offers support that lasts longer. This difference creates distinct support profiles when vitreous disruption accompanies retinal disease, trauma, or surgery. The contrast also affects how long the retina receives mechanical support and whether a later procedure may be needed to remove or replace the substitute.
Optical clarity, viscosity, and surface tension are not merely material descriptors; they determine how well a substitute fills the vitreous cavity and behaves within the eye. Optical clarity supports the visual pathway, while viscosity and surface tension influence physical support. Together, these properties affect ocular structure, retinal healing, and the preservation of vision after vitreous disruption.
Clinical outcomes depend on more than cavity filling. Substitute performance can influence retinal healing, intraocular pressure, and inflammation, so these effects are important when evaluating treatment. A material that maintains needed support may still require attention to pressure or inflammatory responses. These linked outcomes explain why substitutes are assessed as part of broader vitreoretinal care rather than as isolated fillers.
During vitrectomy, removal or disruption of the vitreous body can leave the vitreous cavity without its usual supporting material. A substitute restores cavity filling while contributing optical clarity, viscosity, and surface tension. This helps preserve ocular structure and vision during management of vitreoretinal disease, trauma, or surgical disruption, while its later effects remain relevant to retinal healing and pressure.
Vitreous substitutes are relevant to several vitreoretinal disorders, including retinal detachment and macular holes. They also support treatment of other conditions in which disease, trauma, or surgery disrupts the vitreous environment. Their role is especially important when maintaining the cavity and providing retinal support are necessary parts of preserving ocular structure and supporting visual outcomes.
The need for later removal or replacement reflects differences in how long substitutes provide support and how the eye responds to them. Gas bubbles are temporary, while silicone oil supplies longer-lasting support. In addition, changes involving retinal healing, intraocular pressure, or inflammation can influence subsequent management, making the substitute’s ongoing performance important after the initial procedure.