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Home / How to Read an Eye Prescription for Contacts

How to Read an Eye Prescription for Contacts

Yous've completed your contact lens fitting and come away with your new contact lens prescription, simply what does it all hateful? This commodity will aid yous to read and understand your contact lens prescription.

Where can I find my prescription?

The details of the contact lenses you should habiliment are often found on:

  • the contact lens prescription provided to you lot past your optician;
  • the side of your contact lens box

If y'all are unable to locate your prescription, you can too contact your optician to notice out the details of the lenses y'all wear.

contact prescription form

When yous take a contact lens plumbing fixtures or check up at your local optician, they will provide you with a re-create of your prescription. This is usually located on a form such every bit above.

How to read your contact lens prescription

A contact lens prescription is typically made up of the post-obit:

  1. Basecurve (BC): This number indicates how curved your contact lens is. Your optician will try and match the curve of your contact lens to the curve of your heart to find the best fitted contact lens for you. E.chiliad. BC 8.4.

  2. Diameter: This stands for Diameter and is the length of the contact lens from 1 edge of the lens to the other. This is effectively the size of the contact lens and is used to make sure the contact lens covers the correct parts of your eye. E.chiliad. DIA 13.viii.

  3. Power (pwr) / Sphere (sph) / Dioptre (D): This value is the ability of the lens needed to right your long or short-sightedness and is measured in Dioptres (D). A minus (-) sign indicates that y'all are curt-sighted, whereas a plus (+) sign shows that y'all are long-sighted. The higher the number, the stronger your prescription.

  4. Contact lens name: Most contact lens prescriptions volition accept a brand/blazon/manufacturer name and then that it is possible to reorder your lenses provided the prescription is still valid. Due east.g. ane Day Acuvue Moist. The primary manufacturers you lot volition encounter are: ACUVUE, CooperVision, Ciba Vision / Alcon, and Bausch and Lomb.

  5. Cylinder: This is the amount of astigmatism y'all accept and is to practise with how curved the structures in your eye are. If this section is empty you do non have astigmatism and are just long or curt sighted. If yous do have astigmatism, a value will be entered in this box forth with an Axis. Eastward.g. Left eye: -ii.25, Right eye: -2.25.

  6. Axis: Measured in degrees, this value is normally between 0-180 and is the management where an extra power is added in the contact lens to correct your astigmatism. East.g. 10.

  7. Additional power: This is the magnifying power added to your multifocal contact lenses to aid with reading and close piece of work. This can exist recorded as Loftier, Depression, Medium or with the power value itself and volition always be a + value. E.chiliad. ADD Depression.

box of contact lenses

Are contact lens prescriptions and glasses prescriptions the same?

A contact lens prescription is not the same as a glasses prescription

It's very common for a spectacles prescription to exist confused with a contact lens prescription simply information technology is really important to know the difference between the two when ordering your contact lenses.

A glasses prescription cannot be used to purchase contact lenses. A contact lens sits on the surface of the eye whereas a spectacle lens sits slightly further abroad. This divergence in position affects the resulting power of the lens.

The sphere, cylinder and axis values found in a spectacles prescription will demand to exist adjusted past your optician to get the same ability in a contact lens. This is something that only your optician can summate for you lot.

A spectacle prescription volition not contain:

  • base of operations curve;
  • diameter; or
  • contact lens name/manufacturer

A contact lens prescription will typically not have an axis value other than steps of 5 or 10 degrees.

Now that you sympathize how to read your prescription browse through our all-encompassing range of contact lenses online. Nosotros stock leading manufacturers such every bit Acuvue, Coopervision & Alcon allowing you to find the correct contact lenses for you.

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Source: https://www.lenstore.co.uk/eyecare/how-to-read-your-contact-lens-prescription