Light
rays entering a weak eye's lens are
not all focused onto the same place
on the retina. For example rays a,
b, f and g require more focusing by
the lens to hit the same plane than
rays c, d and e which are nearer to
the centre. Rays c, d and e are
usually always in focus, regardless
of the condition of the eye and form
a clear image on the retina. This
clear image is flooded by the
blurred image known as
'the blur circle' formed by rays a,
b, f and g.
When EyeYOGA is
used, only rays c, d and e are
allowed to form an image on the
retina and
no blur circle is present to block
the clear image. Consequently, the
focus image is naturally cleared.