Glaucoma and cataracts are both conditions of the eye that can lead to blindness or a diminishment of vision. However, they’re quite different.
Normally, the lens behind the pupil of the eye is clear and focuses light on the retina in the back of the eye. This is what allows a person to see clearly. A cataract is a fogging of the lens that causes a person’s vision to be blurred. The cataract doesn’t happen all at once but can develop over years. The condition itself is painless and sometimes the cataract only covers a small part of the lens and doesn’t interfere much with vision. But if the lens becomes very cloudy and leaves a person virtually blind it will need to be removed through surgery. The Lasiksurgery.sg website explains several ways for an effective way to remove a cataract.
Most cataracts are caused because some kind of change in the chemical makeup of the lens causes it to become foggy. The causes can be an injury to the eye, aging, some diseases of the eye or heredity. Symptoms that may let a person know that a cataract is developing are double vision or vision that’s blurry, sensitivity to light and colors that gradually become dull. The person might also find him or herself getting his or her eyeglass prescription changed frequently. Eventually, stronger glasses no longer work.
Cataract surgery is very successful in most patients and helps them regain at least some of their vision.
Glaucoma is one of the leading causes of blindness and is wholly preventable if it’s caught early. Patients should read this glaucoma guide to learn more about the disease and how to treat it. The blindness that comes from glaucoma is caused by damage to the optic nerve. The nerve is damaged because a drainage channel in the eye is blocked and the aqueous humor that flows through the eye builds up. Procedural Tests For Glaucoma: How Doctors Check For Symptoms
Regular visits to an eye doctor can help a person avoid the complications of glaucoma. An eye doctor can determine the level of pressure in the eye. Glaucoma can be controlled with medications like eye drops or pills. However, some patients can’t tolerate the drugs well and surgery may need to be performed. In that case, surgery can be performed to open the drainage channel in the eye with a laser. The surgery is nearly painless and, like cataract surgery, is successful in most cases.