2.3. Macular Degeneration
Macular degeneration is becoming a very serious problem. In the back of the eye is the retina, which is the area that collects and converts images into nerve impulses that the brain interprets. In the center of the retina is an area called macula, essential to vision because it is where the image is focused. Macular degeneration in this area is damaged (still not sure why it happens).

The victim begins to see the crooked lines and then lost sight of the central visual field. There are several ways of varying severity, and treatments are still not very effective. Control is required by an ophthalmologist.

2.4. Glaucoma
Glaucoma is increased fluid pressure inside the eye. The increased pressure can damage the optic nerve permanently. There are different forms of glaucoma. The problem with this disease often produce no symptoms, so it is often diagnosed late.

It is therefore important to have periodic checkups. The important thing is to diagnose it at an early stage for treatment. Drug treatment of certain transactions and is generally very effective.

2.5. Alterations of retinal diseases
May cause diseases of the retina by broad, such as diabetes or hypertension. This disease can damage the retina without you being aware, making gradually lose vision. It is considered that diabetic retinopathy is now the leading cause of blindness in adults in developed countries.

For these retinopathies are not progressing to blindness is essential to maintain the best possible control of diabetes or hypertension. It is imperative that diabetic hypertensive and attend an annual review by your ophthalmologist.

1. The sight of the elderly
While it may be assumed that a young person looks good, this can not be taken for granted when you get older. The vision loss may result in the largest number of causes, and these causes may be treatable or not.

But in any case increases the likelihood of accidents, and people who are ill may have problems to deal with normal life. Vision problems can also cause mental and behavioral disorders in the elderly.

It is imperative that all will be reviewed over the hearing with some frequency, because it depends on your future quality of life. In the absence of problems, it is bad advice be reviewed annually.

2. Most common problems of vision
2.1. Presbyopia
Presbyopia is the loss of accommodation of the lens that appears when it becomes rigid over the years. The lens is a lens that exists inside the eye, whose function is to focus the light. So presbyopia, also known as “sight”, is presented as difficulty focusing on objects to change the look from far to near. It is a universal change, and is corrected with glasses that enhance the focus on close objects.

2.2. Waterfalls
Cataracts are extremely common. The lens (the lens) gradually becomes opaque and vision is wasting. Appear in both eyes, but its progression may be at different speeds. Occur more often in women, although not known exactly why. They are also more common in diabetics, smokers and drinkers. The only effective treatment is surgery, in which the lens is changed by an intraocular lens that replaces its functions. It is a simple operation and a high rate of success.