What is the normal range for SPH cyl axis values?
The range of numbers will be different under each category. For example, SPH numbers typically range between 0.00 and +/- 20.00 while Cylinder numbers typically range between +/-0.25 and +/-4.00.
What is my sph and cyl?
Sph (sphere) represents how long or short-sighted you are. This can be positive (+) for long sight or negative (-) for short sight. The higher the number, the stronger your lens. Cyl (cylinder) represents the amount of astigmatism present.
What is the SPH cyl axis on reading glasses?
This is described in three parts:
- Sphere (SPH): as explained above, this is whether you are long or short-sighted and by how much.
- Cylinder (CYL): This explains the amount of lens power needed to correct your astigmatism. …
- Axis: This explains where the irregular curve that is affecting your vision is.
What is a normal axis for eyes?
If you have “normal” eyesight, there would not be an axis number, as you would not have astigmatism. However, the most “normal” eyes with this condition would tend to have approximately 0.50 dioptres of negative cylinder power with a 180 axis number.
Показник AX говорить про те, під яким градусом потрібно розмістити в оправі лінзу для того, щоб коригувати астигматизм у людини, дозволити йому нормально бачити …
«Sph» est l’abréviation de «Sphère». Elle indique la valeur de correction nécessaire pour compenser les problèmes de vue. «Cyl» signifie …
Скорочення АХ (Axis) вказує на меридіан (вісь, кут нахилу), в якому повинно бути встановлено циліндричне скло.