The retinal damage is almost always visible even before symptoms develop.
[msdmanuals.com]
"Choice of Cell Source in Cell-Based Therapies for Retinal Damage due to Age-Related Macular Degeneration: A Review".
[en.wikipedia.org]
Intermediate AMD may cause some vision loss, but, like early AMD, it is usually asymptomatic. [1] [46] Late AMD [ edit ] In late AMD, enough retinal damage occurs that, in
[en.wikipedia.org]