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Presbyopia means it is
to see things clearly up
. Sufferers need glasses or have to make the
on phone and computer
bigger. On its website, Allergan stated that its eye drops could help people see three lines on an eye
that would normally be blurred. It wrote: "In
studies where patients received one drop of Vuity in each eye once daily, this was measured by the
of patients achieving a 3-line gain or more reading a near-vision eye chart." The drops work by reducing the eye's
size. This helps people to focus on text and objects that are near
. A user who tested the eye drops said they helped him see smaller letters in
.
