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Tag: Prescription glasses meaning

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Expert Optometrist Guide: How to Understand Your Glasses Prescription

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Your eyeglass prescription is a written document from your eye doctor that specifies the correction you need for your vision. It contains measurements for both eyes and provides information on the strength of lenses needed to correct refractive errors such as nearsightedness, farsightedness, and astigmatism. The prescription will typically include the following information: 1. Sphere (SPH): This number indicates the lens power needed to correct nearsightedness or farsightedness. A negative number indicates nearsightedness, while a positive number indicates farsightedness. 2. Cylinder (CYL): This number indicates the lens power needed to…

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Cylinder in Prescription Glasses: The Key to Effective Astigmatism Correction

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Understanding your glasses prescription can be quite confusing, but an optometrist can help explain it to you in detail. Here are some key components of a glasses prescription that an optometrist may explain to you: 1. Sphere (SPH) – This number indicates the amount of lens power prescribed for myopia (nearsightedness) or hyperopia (farsightedness). A negative number indicates myopia, while a positive number indicates hyperopia. 2. Cylinder (CYL) – This number represents the amount of lens power for astigmatism. It may be preceded by a minus or plus sign, and…

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