Simple or chronic open-angle glaucoma: This accounts for the majority -- about 90 percent -- of cases. It progresses slowly and often goes unnoticed for many months or years, causing a gradual deterioration of vision. This type of glaucoma typically responds well to treatment. Therapy is usually continued for life so that the pressure is kept under control, helping to prevent loss of vision. In a few cases, surgery is required to allow the fluid to pass more freely from the eye.

Acute Angle Closure Glaucoma: acute closure of the peripheral drainage angle, characterized by a sudden increase in intraocular pressure. Chronic Angle Closure Glaucoma: the iris obstructs the eye's drainage angle in a slow, progressive fashion. Primary Open Angle Glaucoma: the drainage angle is open but does not allow fluid to drain adequately for unknown reasons. Pseudoexfoliation Glaucoma: deposits of a fibrillary material obstruct drainage of fluid from the eye.

Glaucoma is a disease that results in the damage of optic nerve due to high eye pressure. A person may lose peripheral vision due to nerve damage. This loss of vision is permanent and cannot be regained. In contrast, cataract can cause loss of vision which can be regained by successful cataract surgery. Sometimes, cataract and glaucoma can occur together in the same eye.

Glaucoma is an eye disease in which increased intraocular pressure (that is, too much fluid inside the eye) causes vision loss and blindness by damaging the optic nerve. If the optic nerve is slightly damaged, it’s less able to carry image information to the brain. You may not notice this at first. When it becomes severely damaged, blindness ensues.

Since genetic and environmental factors have been identified as risk factors for glaucoma, you can take Magnesium and B vitamins as protective factors. Also be sure that you have routine eye exams and inform your ophthalmologist about your family history of glaucoma. Early detection is the best way to provide treatment to prevent further damage. Also, you should have your thyroid levels checked, reduce stress (exercise, stretching, deep breathing, meditation, etc.

Comedo (whiteheads or blackheads) or papules. The comedo is the basic acne lesion, which is a plugged pore. If the plugged pore stays under the skin, it's called a closed comedo and forms a white bump or whitehead. Blackheads are comedos that open up and appear blackish on the surface of the skin. This black color is not due to dirt, but because the air reacts with the excess oil. Nodules. These are more serious acne lesions. They lodge deeper in the skin, are painful, and can cause scarring.

See Special Events for a detailed description. A "regular" orienteering meet is point to point, take the controls in order, fastest person wins. A Score-o leaves the order up to the competitor. Controls have a point value. Most points in shortest time wins. A Night-o is just like regular Orienteering, it's just in the dark, and, yes, you bring a flashlight!

Unstable angina. People with coronary artery disease may develop unstable angina, meaning pain and discomfort can happen unpredictably, even during rest. The pain is generally more severe and frequent than that of chronic angina. New or more severe symptoms of unstable angina require medical help right away, since a heart attack may be about to happen. Chronic angina patients may develop unstable angina as their condition progresses. Syndrome X.

Diabetic retinopathy is classified as either nonproliferative (background) or proliferative. Nonproliferative retinopathy is the early stage, where small retinal blood vessels break and leak. In proliferative retinopathy, new blood vessels grow abnormally within the retina. This new growth can cause scarring or retinal detachment, which can lead to vision loss. The new blood vessels may also grow or bleed into the vitreous humor, the transparent gel filling the eyeball in front of the retina.

composed of a main lens and two reading ssegments; one for near and one for intermediate distances (about arm lengths) high power plus lenses used for cataract patients. - made with aspheric surfaces to minimise aberrations due to shape of the lens darken when exposed to short wavelength radiation (300nm - 400nm) or ultra-violet light - rate of darkening and final transmission of the lens (saturation transmission) depends on the ambient temperature.

All types respond differently to natural hormones occurring in different amounts in both men and women. Not all hair is visible on the surface of your skin. Hair growth goes between active and resting stages. On your head, above 90% of your hair is in the active growing stage that can last up to 7 years. The growing cycle of your body hair lasts only for a few months and as much as 30% of your hair is in the resting stage.

The two most prevalent types of migraine headache are migraines with aura and migraine without aura, the latter of the two being more common.

There are many different types of kidney stones. The vast majority of stones are composed of calcium. The most common types of stones are calcium oxalate (70%), calcium phosphate (5-10%), struvite (10%), uric acid (10%) and cystine (1%). It is not uncommon for a single stone to be made of more than one of these types. When this occurs, the stone is commonly referred to as a mixed stone. Less common types of kidney stones include Xanthine, DHA and crixivan stones.

Macular degeneration is classified as either dry or wet. The dry form is more common than the wet (about 90% of patients). It may result from the aging and thinning of macular tissues, depositing of pigment in the macula or a combination of the two. In the wet form, new blood vessels grow beneath the retina and leak blood and fluid. This leakage causes retinal cells to die and creates blind spots in central vision.

Strip Shingles -- these asphalt shingles are approximately three times as long as they are wide. Manufactured in both standard and metric dimensions, strip shingles are distinguished by the number of cutouts or tabs that they have. The most common type of strip shingle is the "three-tab" shingle. Different textural and lighting/shadowing effects can be achieved with strip shingles depending on the number, shape and alignment of the cutouts.

Stress incontinence occurs when you sneeze, cough, laugh, jog, or do other activities that put pressure on your bladder . It is the most common type of urinary incontinence in women. Urge incontinence, also called overactive bladder, occurs when the sensation to urinate is so strong that you cannot reach the toilet in time, even when your bladder contains only a small amount of urine.