Eye

Pictures eye diseases: Pictures of Eye Diseases and Problems – Glaucoma

Eye Diseases – Optomap


AMD is a leading cause of blindness in older people is a condition called age-related macular degeneration. Aging can cause the macula to slowly degenerate and reduce central vision in people over 50 years of age. It is estimated that 8.5% of individuals between 43-54 years and 36.8% of those over 75 years have some degree of macular degeneration.

Diabetes affects 34.2 million people in the United States, yet more than 7 million people are not aware that they have the disease. Diabetes is the leading cause for new cases of blindness among adults in the United States. The major cause of blindness in people with diabetes is called diabetic retinopathy.

An estimated 1. 6 million individuals over 40 years of age in the United States have glaucoma. Approximately half of these people don’t know they have the disease. Almost every case of glaucoma develops without symptoms. Early detection and treatment can reduce the severity of vision loss.

The term ocular hypertension usually refers to any situation in which the pressure inside the eye, called intraocular pressure, is higher than normal. Eye pressure is measured in millimeters of mercury (mm Hg). Normal eye pressure ranges from 10-21 mm Hg. Ocular hypertension is an eye pressure of greater than 21 mm Hg.

Melanoma is a cancer that usually occurs on the skin. It develops from the cells that produce the dark-colored pigment melanin, which is responsible for our skin’s coloring. These cells, called melanocytes, are also found in other places in our bodies, such as our hair, the lining of our internal organs, and our eyes. When melanoma does occur in the eye it is called ocular melanoma.

When the retina detaches, it is lifted or pulled from its normal position. If not promptly treated, a retinal detachment can cause permanent vision loss. Anyone can get a retinal detachment; however, they are far more common in nearsighted people, those over 50, those who have had significant eye injuries, and those with a family history of retinal detachments.

Why Does the Doctor Need a Photo of My Eye?

How ophthalmologists take eye photos

Standard digital camera: A basic 35mm digital camera may be used to document patients diagnosed with an external condition or disorder. Among them: droopy eyelids, Graves’ eye disease, proptosis (when an eyeball protrudes) and skin cancer in or around the eye. “We use standard protocols so the images are consistent from visit to visit,” Steffens says.

Slit lamp biomicroscope: The same tool your ophthalmologist uses to examine your eye. It uses a narrow beam of light and magnifies the view of the front of the eye. Says Steffens: “We’re recording corneal diseases, cataracts and ocular tumors.”

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Fundus photography: A digital camera attached to a low-powered microscope gives a close-up view of the retina, optic nerve and macula. “You’re using conventional photo techniques here with the help of dilation and the special optics in the fundus camera,” Steffens says. It can also help ophthalmologists monitor changes in a patient’s retina over time — and spot warning signs such as leaky hemorrhages caused by diabetic retinopathy and macular degeneration.

Optical coherence tomography (OCT): This technology involves a low-powered laser that goes through the pupil (although “we don’t even touch the eye,” Steffens notes) to measure thickness in the back of the eye — crucial for determining progression of and treatment for a variety of disorders, including macular degeneration, optic neuritis and glaucoma. The method, he adds, “has become a standard of care.”

Fluorescein angiography: Also using a fundus camera, this diagnostic test requires a patient receive an injection of fluorescein dye in his or her arm just like when blood is drawn. The dye travels through the body to the eye’s blood vessels in about 15 seconds — and the resulting contrast allows doctors to more clearly notice signs of diabetic retinopathy, vein and artery occlusion, edema and tumors.

Types, Causes, Symptoms & Eye Diseases @DocOnline