AMD Introduction

Age-related macular degeneration (AMD) is a common eye disease that causes deterioration of the macula, the central area of the retina, and the paper-thin tissue at the back of the eye where light-sensitive cells send visual signals to the brain. Sharp, clear, “straight ahead” vision is processed by the macula. Damage to the macula results in the development of blind spots and blurred or distorted vision. When the macula becomes damaged, many daily activities such as driving and reading become increasingly difficult.

Types of AMD

There are 2 forms of macular degeneration, commonly known as "dry" and "wet."

Dry AMD

Dry AMD is the most common and early form of the disease. It affects about 90% of patients with age-related macular degeneration. While it does not involve any leakage of blood or fluid under the retina like “wet” AMD, vision can be affected.

Dry AMD is characterized by accumulation of yellow spots on the retina called Drusen. Changes in the pigment of the retina call also occur. Dry AMD is a slow process but can lead to Wet AMD. It is not common to lose significant vision with Dry AMD.

Wet AMD

Wet AMD comprises 10 to 20 percent of people with age-related macular degeneration. Wet AMD is more rapid than Dry AMD and can result in rapid vision loss. This type of AMD is characterized by abnormal, leaky blood vessels in the macula, which may create scar tissue, causing permanent blind spots. Though less common than dry AMD, wet AMD is responsible for up to 90 percent of all cases of severe vision loss.

AMD Images

  • Normal RetinaNormal Retina
  • Dry AMD with Drusen
  • Wet AMDWet AMD












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