What is the difference between spherical and cylindrical ... | 合法醫療器材資訊網

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Sphere (SPH) – The term “sphere” means that the correction for nearsightedness or farsightedness is spherical, equal in all meridians of the eye. This indicates the​ ... Read More

Sphere component[edit] ... Every corrective lens prescription includes a spherical correction in diopters. Convergent powers are positive (e.g., +4.00 D) and ... Read More

Spherical power refers to the amount of correction needed for myopia or hyperopia (nearsightedness or farsightedness). Cylinder refers to correction for ... Read More

Understanding your prescription. There are 3 Types of Powers. Power Type, Website Form. Type 1: Spherical (SPH) ... Read More

60% people have only spherical (SPH) power with no Cylinder (CYL) and ... Note​: If you have a CYLINDRICAL POWER, you need to go for TORIC LENSES. Read More

2017年12月28日 — The place where I am going to order my contact lens are asking me to go for only spherical lenses for both the eyes as cylindrical power in my left ... Read More

To calculate the spherical equivalent, algebraically add 1/2 of the cylinder power to the sphere power. The cylinder power and axis are then deleted from the equa​-. Read More