There are several eye problems that are more common among people as they age, although they can affect anyone at any age. They include:
Presbyopia. This is the loss of the ability to clearly see close objects or small print. It is a normal process that happens slowly over a lifetime, but you may not notice any change until after age 40. Presbyopia is often corrected with reading glasses.
Floaters. These are tiny spots or specks that float across the field of vision. Most people notice them in well-lit rooms or outdoors on a bright day. Floaters often are normal, but can sometimes indicate a more serious eye problem, such as retinal detachment, especially if they are accompanied by light flashes. If you notice a sudden change in the type or number of spots or flashes you see, visit your eye doctor as soon as possible.
Dry eyes. This happens when tear glands cannot make enough tears or produce poor quality tears. Dry eyes can be uncomfortable, causing itching, burning, or rarely some loss of vision. Your eye doctor may suggest using a humidifier in your home, special eye drops that simulate real tears, or plugs that are placed in tear ducts to decrease tear drainage. Your doctor may also recommend a new procedure called Lipiflow that uses heat and pressure to treat dry eyes.
Tearing. Having too many tears can come from being sensitive to light, wind, or temperature changes. Protecting your eyes by shielding them or wearing sunglasses can sometimes solve the problem. Tearing may also mean that you have a more serious problem, such as an eye infection or a blocked tear duct. Your eye doctor can treat or correct both of these conditions.
Cataracts.Cataracts are cloudy areas that develop within the eye lens. Since the lens in a healthy eye is clear like a camera lens, light has no problem passing through the lens to the back of the eye to the retina where images are processed. When a cataract is present, the light cannot get through the lens as easily and, as a result, vision can be impaired. Cataracts often form slowly, causing no pain, redness, or tearing in the eye. Some stay small and do not alter eyesight. If they become large or thick, cataracts can usually be removed by surgery.
Glaucoma. This condition occurs when there is a typical and progressive deterioration of the optic nerve. Glaucoma is often associated with an increased pressure of the eye. The eye is like a tire that generally has a normal and safe pressure. When this pressure is increased, it can be associated with damage to the optic nerve; this is called primary open angle glaucoma.
Glaucoma is less common and can be caused by other factors such as injury to the eye, severe eye infection, blockage of blood vessels, or inflammatory disorders of the eye. Because most people with primary glaucoma have no early symptoms or pain, it is very important to get your eyes checked by an eye doctor regularly. Treatment may include prescription eye drops or surgery.
Each war leaves its own brand of trauma on soldiers.
Amputation was the most common surgery during the American Civil War. World War I brought mustard gas and an epidemic of scarred lungs.
For veterans returning from war in Iraq and Afghanistan, vision problems caused by traumatic brain injury are a growing concern. These veterans have better body armor than soldiers in the past, but they are more likely to be severely shaken by a blast from a homemade explosive device.
About 16% of soldiers...
Conjunctivitis. This is a condition in which the tissue that lines the eyelids and covers the cornea becomes inflamed. It is sometimes called "pink eye" or "red eye." It can cause redness, itching, burning, tearing, discharge, or a feeling of something in the eye. Conjunctivitis occurs in people of all ages and can be caused by infection, exposure to chemicals and irritants, or allergies.
Corneal diseases. The cornea is the clear, dome-shaped "window" at the front of the eye. It helps to focus light that enters the eye. Disease, infection, injury, and exposure to toxic agents can damage the cornea causing eye redness, watery eyes, pain, reduced vision, or a halo effect. Treatments include making adjustments to the eyeglass prescription, using medicated eye drops, or having surgery.
Eyelid problems. The eyelids protect the eye, distribute tears, and limit the amount of light entering the eye. Pain, itching, tearing, and sensitivity to light are common symptoms of eyelid problems. Other problems may include drooping eyelids, blinking spasms, or inflamed outer edges of the eyelids near the eyelashes. Eyelid problems often can be treated with proper cleaning, medication, or surgery.
Temporal arteritis. Also known as giant cell arteritis, this condition is an inflammation of the arteries throughout the body. It can begin with a severe headache, pain when chewing, and tenderness or swelling in the temple area. It may be followed in a few days or weeks by sudden vision loss -- usually in one eye. Other symptoms can include shaking, weight loss, and low-grade fever. Scientists don't know the cause of temporal arteritis but they think it may be caused by an impaired immune system. Sudden vision loss in the other eye may occur within a few days or weeks of the first eye. Getting to an opthalmologist -- an eye specialist -- whenever sudden vision loss occurs is critical. Early treatment with medication may help prevent vision loss in one or both eyes.