To determine reading glasses strength, add SPH (Spherical Power) and ADD (Addition). For instance, if SPH is +1.00 and ADD is +1.75 for the right eye, the total strength is +2.75. If SPH is -1.00, the strength becomes +0.75. Always consult your eye care professional for a tailored prescription.
To convert these numbers into reading glasses strength, focus on the sphere value, which is often denoted as ‘SPH’ on your prescription. If you have a cylinder value (‘CYL’), this number primarily affects astigmatism. Therefore, when choosing reading glasses, concentrate on the SPH value for the appropriate correction.
The reading distance also plays a role; standard reading glasses provide optimal vision at about 14-16 inches. Keep in mind that your comfort and vision clarity can vary by individual needs.
Next, we will explore how to select the right reading glasses based on your established strength. This process involves understanding frame styles, lens types, and additional features that enhance your reading experience. Together, these elements create the perfect reading solution tailored to your vision needs.
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