Diameter (DIA): Lens diameter is the specific size of lens you require it works with your base curve to determine your lens’s fit.Base curve (BC): The curvature of the back surface of the contact lens, helping to ensure your lens isn’t too loose or tight.Variables in your contact lens prescription include: Your contact lens prescription has several specifications to help your optometrist effectively fit your eyes and provide you with clearer vision. Axis: The orientation of your astigmatism, a number measured in degrees.Cylinder (C): The degree of astigmatism you have, measured in diopters.Spherical (S): The spherical portion of the lens the degree of nearsightedness or farsightedness.If you have astigmatism, your prescription will feature 3 numbers in the order of “S, C, Axis.” These abbreviations mean:
#Spectacle rx plus
These numbers are in diopters, the unit measuring the focusing power of your lens.Īnother feature on your prescription is a plus (+) or minus (-) sign in front of these numbers, with plus meaning you’re farsighted and a minus meaning you’re nearsighted. Generally, the further away from zero, the worse your eyesight is. These numbers represent the amount of vision correction each eye requires. Each abbreviation has numbers listed underneath them. There is OS (oculus sinister) and OD (Oculus dextrus), which represent your left and right eyes. You’ll notice different numbers and abbreviations listed on your glasses prescription. Your prescription is more than the corrective power of your lenses it takes several other factors into account. Glasses and contact lenses both correct your vision, but their prescriptions work differently. What’s the Difference Between a Contact Lens Prescription & Glasses Prescription?
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While contacts and glasses both improve your vision, there are a few differences in how these prescriptions work. There are several specialty and standard contact lenses available today, including: Another benefit is that contacts don’t fog up or get wet when the weather worsens.Ĭontacts come in many materials and designs for whatever your needs are. They can’t block your view like glasses frames, and the lenses move with your eye. There are several types of contacts available today, including:Ĭontact lenses can provide more natural vision.
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These thin discs sit directly on your eye, providing you with clearer vision. Contact LensesĬontacts are the alternative to glasses. You can get a personalized pair of glasses that suit your style and visual needs. If you want a break from your lenses, all you need to do is take them off.īesides easy accessibility, glasses are customizable.
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They don’t require any cleaning solutions, and overall maintenance is low. Glasses are easy to use you only need to put them on, and you’re ready to go. You can get bifocal, trifocal, or progressive lenses, depending on your preference. If you struggle to see clearly from multiple distances, multifocal lenses are ideal. Glasses can serve many different purposes based on your needs, coming in 2 main types, single-vision or multifocal lenses. They’re a staple of vision correction, with millions using them daily. GlassesĪlmost everyone knows what glasses are. Both will help you see better, but what is the difference between these prescriptions?Ĭontinue reading to learn more about glasses and contact lenses, including the differences between these 2 prescriptions. If your vision needs correction, your optometrist can write you a contact lens or glasses prescription.