Related Experiment Video
Updated: Mar 28, 2026
04:41
Whole Vitreous Humor Dissection for Vitreodynamic Analysis
Published on: May 24, 2015
12.3K
Vitreous floaters: Etiology, diagnostics, and management
Rebecca Milston1, Michele C Madigan2, J Sebag3
1Centre for Eye Health, University of New South Wales, Sydney, New South Wales, Australia.
Survey of Ophthalmology
|December 19, 2015
Summary
Vitreous floaters, often caused by aging and myopia, significantly impact quality of life. Vitrectomy shows proven value for management, unlike Nd:YAG laser treatments which require further substantiation.
Area of Science:
- Ophthalmology
- Retinal Science
- Biomaterials Science
Background:
- Vitreous humor, a gel-like substance, comprises water, collagen, and hyaluronan.
- Gel liquefaction, collagen dissociation, and fibril aggregation lead to light scattering and floaters.
- Posterior vitreous detachment, common with aging, is a primary cause of symptomatic floaters.
Purpose of the Study:
- To review current literature on managing symptomatic vitreous floaters.
- To evaluate the efficacy and safety of existing treatment options.
- To identify the need for further research on new therapies.
Main Methods:
- Literature review of studies on vitreous floaters and their management.
- Analysis of evidence for observation, vitrectomy, and Nd:YAG laser treatments.
- Assessment of reported outcomes and risk profiles for each intervention.
Main Results:
- Vitrectomy, especially with small-gauge instruments, demonstrates a low-risk profile and high success rate.
- Nd:YAG laser treatment efficacy for floaters remains unsubstantiated, with variable reported outcomes.
- Symptomatic floaters are prevalent and negatively impact quality of life.
Conclusions:
- Vitrectomy is currently the only treatment with proven value for symptomatic vitreous floaters.
- Further prospective studies are needed to compare vitrectomy and Nd:YAG laser efficacy and safety.
- New therapeutic approaches, such as pharmacologic vitreolysis, require investigation.
Related Concept Videos
01:27Open Angle Glaucoma: Treatment
1.1K
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
1.1K
01:28Angle Closure Glaucoma: Treatment
1.6K
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
1.6K
01:25Glaucoma: Overview
1.6K
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
1.6K
01:26Varicose Veins II: Diagnostic Studies and Interprofessional Care
290
Varicose veins, or varicosities, develop when the valves in the veins, which control blood flow, weaken or damage. It causes blood to pool and the veins to enlarge. Understanding the clinical manifestations, diagnostic approaches, and management options for varicose veins is crucial for effective treatment and relief.Clinical manifestationsClinical manifestations of varicose veins include a heavy, achy feeling or pain after prolonged standing or sitting. This discomfort can often be relieved by...
290
01:29Venous Thrombosis III: Interprofessional Care
465
Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
465
01:22Photoreceptors and Visual Pathways
11.0K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
11.0K