The eye is named as a sensory organ of our body. The light around us is converted into nerve impulses by an eye. The optic nerve transmits these signals to the brain, which forms an image so thereby providing sight. Eye consists of various parts such as sclera, cornea, iris, pupil, lens and retina.
The retina is the sensory membrane that edges the inner surface of the back of the eyeball. The Retinal pigment epithelium (RPE) helps in attaching the retina to the underlying tissue. A highly specialized layer of pigmented cells that is RPE plays a role in the maintenance of visual function. Retina is composed of several layers, including one that contains specialized cells called photoreceptors.
Photoreceptor cells consists of 2 types — rods and cones. Rod photoreceptors detect motion, imparts black and-white vision and function well in low light. Cones perform well in medium and bright light and are also responsible for central vision and color vision. Rods are located throughout the retina; cones are concentrated in a small central area of the retina called the macula.
Function of Retina:
Retina is situated near the optic nerve. The function of the retina is to receive light focused by lens, and then convert it into neural signals. These neural signals are then send for visual recognition to the brain.
Several parts of the eye are associated with the retina. They include :
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The retina is the sensory membrane that edges the inner surface of the back of the eyeball.
A retinal disorder or problems affects retina, which, in turn, can affect vision to the point of blindness. Common retinal diseases include macular degeneration, retinal detachment, diabetic eye disease, and retinitis pigmentosa.
Yes, in many cases it can be repaired. Though a patient might not completely restore the vision, but the retinal repair can at least prevent further vision loss and stabilize vision.
Vitamins such as vitamin A, C and E are good for the eyes and general health.
High blood pressure can't directly cause retinal detachment.
There are different types of retina diseases, problems and conditions. It's very important that the retina function properly so that one can enjoy a lifetime of good eyesight. Many retina conditions can be detected prior by the eye doctor before a person notices any significant symptoms. Most of retinal diseases cause visual symptoms.
Diabetic retinopathy: Diabetic retinopathy happens in people who are suffering from diabetes. This condition arises when high blood sugar levels cause damage to blood vessels in the retina.
Retinal detachment: A retinal detachment is specified by the presence of fluid under the retina. This condition emerges when fluid passes through a retinal tear, causing the retina to lift away from the underlying tissue layers. Permanent and worsening vision loss can happen if the retina is not surgically reattached as earlier as possible.
Retinitis pigmentosa: It is genetic hereditary disease. It slowly affects the retina and causes loss of night and side vision.
Macular degeneration: The retinal center begins to worsen in this particular condition. The symptoms of macular degeneration are blurred central vision or a blind spot in the center of the visual field.
Retinoblastoma: It is cancer of the eye. It initiates in the retina.
Retinal disease symptoms:
The retinal diseases have below common signs and symptoms. These may include:
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