Idaho Falls (208) 524-2025 | Pocatello (208) 232-2008 | Rexburg (208) 359-1130 | Twin Falls (208) 933-2039
Idaho Falls | Pocatello | Rexburg | Twin Falls

Geographic Atrophy

Geographic atrophy is an advanced form of dry macular degeneration (AMD) that causes a black spot in central vision. 

Reason for Geographic Atrophy

Our eyes need healthy photoreceptor cells (rods and cones) to gather incoming light and transmit images to the brain. In late-stage dry AMD, protein deposits (drusen) forming on the macula (the central part of the retina) clump on the photoreceptor cells and cause them to die. When these photoreceptor cells are lost, central vision is lost. This is a slow process that will also begin to affect the visual cells in the retina. 

Symptoms of Geographic Atrophy

  • Difficulty reading in dim lighting situations
  • Central vision loss
  • Black spot in central vision
  • Slower reading speed
  • Glare
  • No change in peripheral vision

Risk Factors for Geographic Atrophy

  • Aging (more frequent in a person’s 70s and 80s)
  • History of smoking 
  • High blood pressure 
  • Light colored iris
  • Genetics

Treatment for Geographic Atrophy

Unfortunately, there is no treatment for this condition. Our macular degeneration doctors in Southeast Idaho use autofluorescence imaging and high-density optical coherence tomography techniques to monitor the progression of this disease to help protect vision for as long as possible.

If you are experiencing any change in your central vision, contact our macular degeneration doctors to schedule an eye exam in Idaho Falls to identify the root cause of your vision problems. 

Idaho Falls

2025 East 17th Street,
Idaho Falls, ID 83404

Pocatello

1157 Call Place,
Pocatello, ID 83201

Rexburg

491 First American Circle,
Rexburg, ID 83440

Twin Falls

706 N College RD Ste C,
Twin Falls, ID 83301