Related Experiment Video
Updated: May 23, 2026

10:14
Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
Published on: May 26, 2023
[Vitreous body aging].
1Service ophtalmologie, hôpital Saint-Roch, CHU Nice Sophia Antipolis, 5, rue Pierre-Dévoluy, 06006 Nice cedex 1, France. gastaud.p@chu-nice.fr
Journal Francais D'Ophtalmologie
|April 10, 2012
Summary
Age-related vitreous changes, including liquefaction and posterior vitreous detachment (PVD), can lead to serious eye complications. Understanding these anatomical modifications is crucial for managing symptomatic PVD and preventing vision loss.
Area of Science:
- Ophthalmology
- Gerontology
- Retinal Imaging
Context:
- Age-related changes in the vitreous humor are significant.
- Progressive liquefaction and posterior vitreous detachment (PVD) are key age-related modifications.
- While optical coherence tomography (OCT) enhances in vivo visualization of the vitreoretinal interface, understanding biomicroscopic aspects remains essential.
Purpose:
- To highlight the importance of biomicroscopic examination in understanding age-related vitreous changes.
- To emphasize the role of OCT in PVD research.
- To underscore the need for comprehensive evaluation of symptomatic PVD.
Summary:
- The vitreous undergoes age-related liquefaction and posterior vitreous detachment (PVD).
- Optical coherence tomography (OCT) aids in visualizing the vitreoretinal interface and understanding PVD.
- Common complications include retinal hemorrhage, retinal breaks, and rhegmatogenous retinal detachment.
Impact:
- Improved understanding of PVD mechanisms.
- Enhanced diagnostic capabilities for vitreoretinal disorders.
- Guidance for clinical examination and management of patients with symptomatic PVD.
Related Concept Videos
The Effect of Aging on Tissues
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
Glaucoma: Overview
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...
Photoreceptors and Visual Pathways
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, whereas...
Diabetic Retinopathy
DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
Degenerative Disc Disease I: Introduction
Degenerative disc disease is a chronic condition in which intervertebral discs gradually lose structure and function. It is not infectious or autoimmune; rather, it results from age-related biochemical and mechanical changes, influenced by genetic, metabolic, and environmental factors.Structure and Function of DiscsThe spine contains 23 intervertebral discs that absorb load, distribute forces, maintain spacing, and allow flexibility. Each disc consists of a nucleus pulposus, a gel-like core...

