វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
តូច
មធ្យម
ធំ
Presbyopia
ENGLISH MEANING
1.
A
defect
of
vision
consequent
upon
advancing
age
. It is
due
to
rigidity
of the
crystalline
lens
,
which
produces
difficulty
of
accommodation
and
recession
of the
near
point
of
vision
, so
that
objects
very
near
the
eyes
can not be
seen
distinctly
without
the
use
of
convex
glasses
.
Called
also
presbytia
.