🧠 In Plain English:
Presbyopia — the age-related loss of near vision that sends most people to reading glasses after 40 — is caused by the lens of the eye stiffening and losing flexibility. A new class of eye drops (pilocarpine-based) temporarily shrinks the pupil to increase depth of field, effectively restoring near vision for hours without glasses. This article covers the science, the FDA-approved options, and what it means for the future of aging.