Related Experiment Video
Updated: Feb 14, 2026
03:37
Intravitreal Injections in the Ovine Eye
Published on: July 5, 2022
4.1K
Intravitreal Tamponade Agents in Vitreoretinal Surgery: Current Advances and Future Directions
Marco R Pastore1,2, Alberto Grotto3, Marco Celega3
1Eye Clinic, Department of Medical, Surgical Sciences and Health, University of Trieste, Trieste, Italy, marco.pastore@hotmail.it.
Summary
Intravitreal tamponades are crucial for retinal surgery but have limitations. Future developments aim for smarter, safer agents that aid healing and reduce patient burden.
Area of Science:
- Ophthalmology
- Vitreoretinal Surgery
- Biomaterials Science
Background:
- Intravitreal tamponades are vital for treating posterior segment pathologies in vitreoretinal surgery.
- Current agents like gases and silicone oils have limitations including required patient positioning and potential complications.
Purpose of the Study:
- To provide a comprehensive review of existing intravitreal tamponade agents.
- To discuss current and future strategies in tamponade development for retinal surgery.
Main Methods:
- Literature review of intravitreal tamponade agents.
- Analysis of physical properties, clinical applications, and complications.
- Exploration of novel tamponade strategies and future research directions.
Main Results:
- Overview of available tamponade agents, including heavy tamponades and perfluorocarbon liquids.
- Discussion of limitations associated with conventional agents.
- Identification of emerging trends such as drug-eluting tamponades and synthetic vitreous substitutes.
Conclusions:
- Current intravitreal tamponades are indispensable but have associated challenges.
- Future tamponades promise enhanced functionality, including active roles in retinal healing and drug delivery.
- Advancements aim to improve patient outcomes and reduce the need for postoperative interventions.
Related Concept Videos
01:30Adrenergic Agonists: Direct-Acting Agents
2.9K
Drugs that mimic the action of endogenous catecholamines like noradrenaline and adrenaline are called adrenergic agonists or sympathomimetics. Based on their mechanism of action, sympathomimetics can be classified as direct-, indirect-, or mixed-acting sympathomimetics. Direct-acting adrenergic agonists activate adrenoceptors without affecting presynaptic neurons, making them independent of neuronal catecholamine-depleting agents like reserpine and guanethidine.
These agents can be classified...
These agents can be classified...
2.9K
01:10Electrical Current
7.2K
Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
7.2K
02:22Overview of Advanced Functional Groups
30.4K
Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.
30.4K
00:56Extraction: Advanced Methods
1.2K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.2K
01:29Subviral Agents
589
Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
589
01:09Directing Effect of Substituents: meta-Directing Groups
6.1K
Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
6.1K