¨A presbyopic eye needs its focal length
to be
decreased because its lens cannot
gain
the necessary curvature to focus
nearby
objects
¨Presbyopia can be corrected by placing
a
converging lens between the eye and
the
object
¨The converging lens decreases the total
focal
length
¨In my demonstration, I placed the
converging
lens between the lamp and
my
adaptable lens
¨The result is a clear image on the screen
