Disclaimers This is a prototype created for demonstration purposes. It does not accurately predict individual lifespan or GA progression rates. Atrophy Advisor Age (years): Sex: Male Female Current Distance to fovea (microns): Average Progression Rate: microns per year Average Progression Rate — microns per year. Keenan et al reported a constant rate of progression of 73 microns per year. (Default is 73). A personalized rate of encroachment can be entered if available. Life Expectancy: Life expectancy is based on the 2025 life table posted online by the US Social Security Administration from data obtained in 2022. It does not take into account a wide number of factors such as current health, life style, and family history. Cross Point: Calculate Reset Homepage