Vitreous, Retina and UVEA
Vitreous
The vitreous is a clear, gel-like substance that fills the space between the lens and the retina in the back of the eye. It helps maintain the eye’s shape, supports the retina by exerting gentle pressure, and aids in transmitting light to the retina. The vitreous also acts as a shock absorber, protecting the eye from sudden impacts.
| Definition | Components | Causes | Symptoms | Treatment |
|---|---|---|---|---|
| A clear, gel-like substance filling the eye between the lens and retina. | Composed mainly of water (99%), collagen, and hyaluronic acid. | Aging, Trauma, Diabetic retinopathy, Retinal tears. | Floaters, Flashes of light, Blurred vision. | Observation, Laser therapy, Vitrectomy (surgical removal of the vitreous). |
Common Disorders from Vitreous
Posterior Vitreous Detachment (PVD)
Vitreous Hemorrhage
Vitreoretinal Interface Disorders
Retina
| Definition | Components | Causes | Symptoms | Treatment |
|---|---|---|---|---|
| The thin layer of tissue at the back of the eye that detects light and sends visual signals to the brain. | Contains photoreceptors (rods and cones), bipolar cells, ganglion cells, and layers of supporting cells. | • Retinal detachment • Diabetic retinopathy • Macular degeneration • Retinal vein occlusion | • Sudden vision loss • Floaters • Distorted vision • Dark spots | • Observation • Laser therapy • Vitrectomy (surgical removal of the vitreous) |
Common Disorders from Retina
Diabetic Retinopathy
Age-Related Macular Degeneration (AMD)
Retinal Detachment
Retinitis Pigmentosa
Uvea
| Definition | Components | Causes | Symptoms | Treatment |
|---|---|---|---|---|
| The middle layer of the eye, comprising the iris, ciliary body, and choroid, supplies the majority of blood to the retina. | Iris: Regulates light by adjusting pupil size. Ciliary Body: Produces aqueous humor and houses the ciliary muscle. Choroid: Contains blood vessels that deliver nutrients and oxygen. | • Uveitis • Infection • Autoimmune diseases • Trauma | • Eye pain • Redness • Blurred vision • Light sensitivity | • Corticosteroids • Immunosuppressive drugs • Antibiotics • Surgery |
Common Disorders from Uvea
Uveitis
Choroidal Nevus and Melanoma
Iris and Ciliary Body Cysts
Services at Samarth Netralaya Institute
The Vitreo-Retina department is equipped with the latest instruments for managing various vitreoretinal disorders:
Fundus Photography
Fundus Autofluorescence
Optical Coherence Tomography
Laser Photocoagulation