Retina


The retina is a sensory membrane that lines the inner surface of the back of the eyeball. It is composed of many layers, including one that contains specialized cells called photoreceptors. There are two types of photoreceptors – rods and cones. The former helps to detect motion, provide black and white vision, whereas the latter performs best in medium and bright light, and is responsible for coloured vision.

VITREO-RETINA EYE DISEASE

Retinal Detachment- is a situation in which the retina is pulled away from its normal position. In this case the retinal cells get separated from the layer of blood vessels that provides oxygen. If this remains untreated then it may lead to the loss of vision.

SYMPTOMS:

Blurred vision

Flashes of light in one or both the eyes

Floaters

CAUSES:

Tear in retina, causing vitreous humor to drain out through the tear

TREATMENT:

Vitrectomy

MACULAR DEGENERATION

Macula is the central part of the retina. Macular degeneration may occur due to deterioration of the macula. It is one of the root causes of vision loss. People suffering from macular degeneration may suffer from loss of central vision.

Dry macular degeneration (non-neovascular)

Dry AMD is an early stage of the disease and may result from the aging and thinning of macular tissues, depositing of pigment in the macula or a combination of the two processes. Dry macular degeneration is diagnosed when yellowish spots known as drusen begin to accumulate in and around the macula. It is believed these spots are deposits or debris of the deteriorating tissue.

Visual field test : This test measures the peripheral (side vision). It helps to determine whether the patient has lost any peripheral vision which is an early sign of glaucoma.

OCT (Optical Coherence Tomography): This is a test to see the status of the optic nerve head and the thickness of the retinal nerve fiber layer within the eye.In glaucoma there is thinning of the retinal nerve fiber layer.

Pachymetry : This is the measurement of the thickness of the cornea.

TREATMENT FOR GLAUCOMA:-

Eye Drops ( Anti - Glaucoma medication) : These either reduce the formation of fluid in the eye or increase its outflow, thereby lowering eye pressure.

Laser treatment

Surgical Procedures : (Trabeculectomy , Glaucoma Drainage Devices etc)