IL6 and axial length measurement: We are aware that the age of our AL patients is significantly higher than that of HDs, and this represents a limitation of this study; nevertheless, in our hands, AL-MSCs showed only a decreased proliferation capacity leading to an earlier senescence, while immunosuppressive abilities, differentiation capacities, and IL-6 secretion are conserved functions, indicating no relation with age, and possibly representing a peculiar aspect of AL.