Dr. Michael Dollin Assistant Professor MD, FRCSC Ophthalmologist
The term “geographic” refers to the sharply defined borders of the atrophic regions, which can resemble shapes on a map when viewed during an eye examination.
If you’d like, I can also explain how geographic atrophy is diagnosed, how quickly it typically progresses, or the newer treatments that can slow its progression.
Dr. David Maberley, MD, FRCSC, Ophthalmologist
Geographic atrophy (GA) is an advanced form of dry Age-related macular degeneration. In GA, cells in the macula—including retinal pigment epithelial cells, photoreceptors (light-sensing cells), and the underlying support tissue—gradually degenerate and die. As these tissues waste away, well-defined areas of retinal thinning (“atrophy”) develop, leading to permanent loss of central vision.
The macula is the part of the retina responsible for detailed, straight-ahead vision used for activities such as reading, recognizing faces, and driving. As geographic atrophy progresses, people may experience:
- Blurred or distorted central vision
- Difficulty reading or recognizing faces
- Dark or blank spots in the center of vision
- Increasing difficulty seeing in low-light conditions
Unlike the “wet” form of AMD, geographic atrophy does not involve abnormal leaking blood vessels. However, it can still cause significant and irreversible vision loss as the atrophic areas enlarge over time.
Dr. Michael Dollin Assistant Professor MD, FRCSC Ophthalmologist
Dr. David Maberley, MD, FRCSC, Ophthalmologist
How Mental Health Can Affect Eye Health
Geographic Atrophy (GA) is an advanced form of age-related macular degeneration (AMD) that causes progressive, irreversible loss of central vision. While primarily an eye disease, GA can have profound psychological and social consequences, including depression, anxiety, grief, social isolation, and loss of independence. The condition often interferes with everyday activities such as reading, recognizing faces, and driving, and studies suggest that up to one-third of people with GA withdraw from social activities because of their vision loss.
- Research has reported that a substantial proportion of people with GA or advanced AMD reduce or avoid social activities because of vision-related limitations. The exact percentage varies by study and population, but estimates around one-third of affected individuals experiencing social withdrawal are within the range reported in the literature.
- Geographic Atrophy (GA) is an advanced form of dry age-related macular degeneration (AMD). It involves progressive loss of retinal cells, particularly in the macula, leading to irreversible vision impairment.
- GA often affects central vision, which can make reading, recognizing faces, driving, and other daily activities difficult. Peripheral vision is usually preserved, especially in earlier stages.
- Although GA is an eye disease, its effects commonly extend beyond vision. Studies have found increased rates of depression, anxiety, emotional distress, social isolation, grief, and reduced quality of life among people living with advanced AMD and GA.
- Loss of visual function can contribute to a reduced sense of independence, difficulty participating in hobbies, and challenges with social engagement.