Hello,

Several months ago, I went for a routine exam (optometrist) and was
given this prescription:

OD:

Sph=    -1.00
Cyl=      SPH
Axis=     ----
Add=    +1.25

OS:

Sph=    -0.75
Cyl=    +0.25
Axis=    080
Add=   +1.25

Recently, I had 2 strange occurances of distorted vision in one eye,
where these falshing & pulsating colorful "triangular shaped" designs
appeared in my central vision, then expanded outward throughout my
field of vision, then disappeared.  All within a 20 minute time
period.  So I went to an opthamologist who, after a series of all
kinds of tests, diagnosed me with occular migraine.  He also performed
a refration and came up with the following prescription:

OD:

Sph=    -1.00
Cyl=     SPH
Axis=    -----
Add=    +1.75

OS:

Sph=    -.050
Cyl=     -.050
Axis=     170
Add=    +1.75

Other than the obvious increase in add strength, what is the
difference in the left eye scripts? It appears that the newer script
is about 1/2 diopter stronger?

My current glasses have the older prescription. I can see perfectly in
the left eye. My distance vision in the left eye is actually slightly
more "crisp" than in my right eye (close up is the opposite, with the
right eye seeing more "crisp" than the left).  I'm a bit apprehensive
about getting glasses based on this newer prescription.

Thanks,
-Ed