Posterior segment
Vitreous
- Largest cavity in the eye
- 2/3rds of total volume (approx 3.9ml in emmetropic eyes)
- 3.9g weight
- Transparent viscoelastic gel
- 98% water and 0.15% macromolecules
- Structure: collagen network interspersed with hyaluronic acid
- Hyaluronan provides viscosity, viscoelasticity and stability.
- Polysaccharide GAG: nontoxic,…