Glaucoma is a term that refers to a group of diseases that affect the eye and can result in damage to the optic nerve. The optic nerve is a bundle of nerve fibers connecting the retina in the eye to the brain, transmitting visual signals. Glaucoma...
Glaucoma is an eye disease characterized by dysfunction of the ocular drainage system. While the exact cause of glaucoma remains unclear, fluid inside the eye builds up because of the diminished draining rate. As the eye's internal pressure...
Discovering and treating eye complications associated with diabetes can prevent more severe conditions from occurring, including blindness. Left untreated, cataracts, glaucoma and retinopathy may be diagnosed. Eye disorders are often caused by...
Light enters the eye through the cornea. The iris is the part of the eye that expands and shrinks in order to change the size of the pupil so that the correct amount of light enters the eye. The light is focused on the back part of the eye, called...
Glaucoma results when the natural flow of fluid in the eye slows, causing an increase of pressure. Untreated, this high intraocular pressure, or IOP, damages the optic nerve, which may result in a gradual loss of peripheral vision and subsequent...
A degenerative eye disease is a collective term for a disease that affects the various parts of the eye, including the retina, cornea, iris and macula. The common prognosis is a progressive loss of central vision. The diseases of the eye can be...
Vitamin B-12, also known as cobalamin, is a water-soluble vitamin needed by the body for the production of healthy red blood cells, DNA synthesis and for the maintenance of healthy nerve cells. Taking vitamin B-12 together with other B vitamins...
Lemon balm is a plant that originally grew in Europe, but can now be found throughout the world. It has a lemony smell and beautiful white flowers. The medicinal uses of lemon balm come from the stems, leaves and flowers of the plant. However,...
Broccoli could be the most under-appreciated vegetable on earth. Although few people seem enthusiastic about the prospect of broccoli on the menu, this cruciferous vegetable is packed with antioxidants, phytonutrients and cancer-fighting...
Most people see the world through binocular vision, which is vision that receives input from both eyes. People with a glass eye have monocular vision; they see the world with only one eye. Binocular vision allows input from two different angles to...
According to the Mayo Clinic, your optometrist may use a specific vision test called a perimetry that will check the range of you peripheral vision. During a perimetry test, you will look into a bowl-shaped surface at a central point. Lights will...
Glaucoma is an eye disorder in which an increase in pressure within the eye leads to damage to the optic nerve. Glaucoma affects approximately 14 million people worldwide, of which 3 million are Americans, notes Merck Manuals Online Medical...
The retina is a tissue located at the back of the eye. Its main job is to convert images so that the brain can properly process them, according to MedlinePlus. The retina is red and contains its own blood supply. Sometimes, the retina may become...
An aura is a vision disturbance that is considered a warning sign of a migraine. The aura may occur in both eyes and include other symptoms. Auras do not occur with every migraine and in every sufferer. Auras typically develop 10 to 15 minutes...
Symptoms of brain tumors vary significantly depending on location, size and type. The symptoms are caused by pressure on the brain and damage to healthy tissue. Swelling and fluid buildup, or edema, around the tumor can also cause different...
Brain cancer can be a debilitating form of cancer, as the malignant tumor can interfere with normal brain function. But without a CT scan or an MRI scan of your brain, it is not easy to diagnose a brain tumor. For some people, their brain tumors...
The cerebellum is located in the posterior fossa along with the fourth ventricle and brain stem. Approximately 15 to 20 percent of tumors arise in the posterior fossa, according to New York Presbyterian Hospital. The cerebellum controls intricate...
Images that are seen travel from the eye to the brain via the optic nerve. When this nerve suffers damage, vision can become impaired and glaucoma can appear. According to the Mayo Clinic, this is the second-leading cause of blindness, sometimes...
MedlinePlus says night blindness refers to a condition in which people have trouble seeing in dim settings and at night. Sometimes, an underlying medical condition or a lack of certain vitamins can lead to night blindness. Some causes of night...
"Blind" is a relative term, legally defined in the United States as vision of 20/200 or less in the better eye. More than 80 percent of blind people can perceive light, the American Foundation of the Blind reports, and many can see shadows....
During a stroke---also known as a cerebral vascular accident---something happens to stop blood flow to the brain. Lack of oxygen and nutrients can cause visual loss including loss of peripheral vision, which is used to see objects on the side or...
Each year, approximately 2,200 children in the United States are diagnosed with a brain tumor, according to the American Brain Tumor Association. Like brain tumors in adults, many symptoms depend on the location of the tumor. Brain tumor symptoms...
The National Diabetes Association reports diabetes as the leading cause of blindness. A person with diabetes who manages and controls his blood sugar has a less likely chance to develop eye complications related to diabetes; however, he is still...
According to braintumor.org, a brain tumor is an abnormal mass of tissue in which some cells grow and multiply uncontrollably, apparently unregulated by the mechanisms that control normal cells. Brain cancer can originate either within the brain...
Head tumors can be either benign or noncancerous or malignant or cancerous. According to the "Merck Manuals," head tumors are generally more common in men than women. Head tumors can be either primary tumors or metastases from other tumors that...
Glaucoma is a dangerous eye disease that can affect your vision. According to the Mayo Clinic, glaucoma is the second-leading cause of blindness. Severe eye pain, nausea and loss of peripheral vision are some symptoms of this dreadful disease....
Due to the impact of abnormal glucose levels, diabetics are at risk for developing a variety of vision-related diseases. One major disease is called diabetic retinopathy because it affects the retina, causing vision loss and possible blindness....
Brain aneurysms--weak spots in a vessel that bulge and fill with blood--can occur with little or no warning. If they rupture, the result is often a stroke, which leads to permanent nerve damage or death. According to the American Society of...
Eye issues affect people of all ages, from newborns to the elderly. Symptoms of eye disorders include blurred vision, redness, pain, tearing, sudden vision loss and eye irritation. Causes of eye problems include genetics and infections, such as...
Glaucoma is an eye disease that can lead to blindness. Get professional tips and advice on diagnosing, preventing, and treating glaucoma in this video.
