Depending on factors such as the amount, type, and location of the protein buildup, amyloidosis can present in different forms: either systemic or localized. The types of amyloidosis include systemic AL (primary), systemic AA (secondary), systemic wild-type ATTR (senile), systemic hereditary ATTR (familial amyloid polyneuropathy), and localized AL [3]. Here, TTR is linked to axial length measurement.