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Is my eye prescription for short or long sightedness? Have astigmatism

Hi i wonder if you can tell me what my eye prescription is Short or long sighted i have an astigmasim and my prescription is Left SPH +2.50, CYL -3.00, Axis 80, i also have congenital cateracts in both eyes, i recently had my left eye operated on to remove the cateract but they have put the incorrect strength of lens in my eye i am told and that is why i cannot see properly out of it. thanks
Asked On : Thu, 18 Oct 2012
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General & Family Physician 's  Response
hi lisa,
The sphere (Sph) specifies the strength of lens required to correct your focus - a plus sphere to correct long-sightedness (hyperopic - difficulty focusing on close objects) and a minus to correct short sightedness (myopia - difficulty focusing on distant objects.)

The CYL and AXIS compensate for an astigmatism. So what's an astigmatism? An astigmatism is where the eye is shaped slightly like a rugby ball or referred to as ‘toric’, not a perfect sphere like a football. This just means the eye has difficulty focusing at certain angles. This box maybe empty or have a plus or a minus value in it. The measurement is the Dioptre. Most values range from +/- 0.25 to +/- 4.00 and will go up in steps of 0.25.

AXIS tells us where the astigmatism is on your eye. The measurement is in Degrees. The values range between 0 and 180 and may go up in steps of ½, 1, 5 or 10 degrees.
I hope you got it now.
Answered: Thu, 18 Oct 2012
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