Table 1.

Clinical classification scale for age-related macular degeneration [16].

Classification	Symptoms
No signs of AMD	No visible drusen or pigmentary abnormalities
No clinically significant increased risk of late AMD	Small drusen (<63 µm)
Early AMD	Medium drusen (≥63–<125 µm) without pigmentary abnormalities thought to be related to AMD
Intermediate AMD	Large drusen or pigmentary abnormalities associated with at least medium drusen
Late AMD	Lesions associated with neovascular AMD or geographic atrophy