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By law opticians are obliged to provide you with a prescription. Once you have had a thorough eye test they must give you a copy of your prescription without requiring you to make a purchase.
The type of information on your prescription, which is also the information we need you to enter when ordering your glasses comes in four main parts : ‘Sphere’, ‘Cylinder’ ‘Axis’ and “Add”
- Sphere (Sph) specifies the strength of the lens: plus (‘+’) for long sightedness, minus (‘-‘) for short sightedness.
- Cylinder (Cyl) is your astigmatism correction. If you don’t have a value for astigmatism, you can leave this blank.
- Axis is the angle that your astigmatism is set at. You don’t need to enter a value if you have not entered a value for Cylinder.
- Reading Addition (Add) is needed when you need glasses set for close work only, or if you need bifocals.
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