Related Experiment Video
Updated: May 20, 2026
04:41
Whole Vitreous Humor Dissection for Vitreodynamic Analysis
Published on: May 24, 2015
[Eye connective tissues: cornea and vitreous body]
Jacqueline Labat-Robert1, Yves Pouliquen, Ladislas Robert
1Laboratoire de Recherches Ophtalmologiques, Hôtel-Dieu, Université Paris 5, Paris, France. lrobert5@wanadoo.fr
Biologie Aujourd'Hui
|July 4, 2012
Summary
This research explores eye tissue, focusing on cornea and vitreous humor. Key findings include the role of structural glycoproteins in cornea and fibronectin in vitreous, highlighting their importance in eye health and disease.
Area of Science:
- Ophthalmology and Connective Tissue Research
- Biochemistry and Molecular Biology
- Developmental Biology
Context:
- Long-term collaboration between ophthalmologists and basic scientists since 1962.
- Research aligned with the 50th anniversary of the French Society of Connective Tissues.
- Focus on eye tissues as specialized connective tissues.
Purpose:
- To present extensive research on the ontogeny, phylogeny, structure, function, and regulation of the cornea.
- To investigate corneal wound healing, regeneration, and pathologies like keratoconus.
- To analyze the composition and age-dependent changes in the vitreous humor.
Summary:
- Investigated corneal morphogenesis, identifying structural glycoproteins and their biosynthesis by keratocytes.
- Utilized quantitative morphology and biochemistry to understand corneal structure and function maintenance.
- Discovered fibronectin in the vitreous humor, crucial for hyaluronan-collagen network adhesion.
- Examined age-related vitreous modifications, particularly reactive oxygen species-mediated hyaluronan degradation.
Impact:
- Advanced understanding of corneal structure, function, and disease mechanisms.
- Identified novel matrix components and their roles in connective tissues.
- Provided insights into the aging process of the vitreous humor.
- Contributed to the broader field of connective tissue research in ophthalmology.
Related Concept Videos
01:20Anatomy of the Eyeball
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...
01:17Accessory Structures of the Eye
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
01:20Muscles of the Eye
The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
01:22Microbiome of the Eye
The human eye has a specialized microbiota that reflects its unique anatomical and immunological environment. This low-biomass microbial community predominantly colonizes the conjunctiva and eyelid margins, playing a vital role in ocular surface homeostasis and defense. Despite its proximity to the richly colonized facial skin, the ocular surface maintains a distinct microbial profile due to continuous mechanical and biochemical defense mechanisms.The conjunctival surface hosts fewer microbial...
01:25Glaucoma: 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...
01:20Embryonic Connective Tissues
During early development, the embryo forms two types of connective tissues— the mesenchyme and mucoid connective tissue.
The mesenchyme is the first connective tissue that emerges in the developing embryo. It consists of loosely arranged multipotent mesenchymal cells and reticular fibers in the extracellular matrix. This loose arrangement allows easy migration of cells, which is essential for germ layer positioning, patterning, and organ morphogenesis during embryonic development. Mesenchyme is...
The mesenchyme is the first connective tissue that emerges in the developing embryo. It consists of loosely arranged multipotent mesenchymal cells and reticular fibers in the extracellular matrix. This loose arrangement allows easy migration of cells, which is essential for germ layer positioning, patterning, and organ morphogenesis during embryonic development. Mesenchyme is...