We prescribe a prescription for glasses or contactlenses to achieve the highest amount of visual acuity possible for you.

Once the refractive error has been assesed and measured, a prescription is send out which you can use to get the desired glasses from a manufactorer.

The terms OD and OS specify which eye the correction is meant for. OD, from Latin Oculus Dexter, means right eye while OS, Oculus Sinister is Latin for left eye.

The term Sphere (S) refers to the spherical power of the lens, which is measured in dioptres (dpt) and is equal in all meridians. This is used to correct nearsightedness (myopia) or farsightedness (hyperopia). If the sign appearing before the number is minus (-), you are nearsighted. If it is plus (+), or has no sign at all, you are farsighted.

Cylinder (Cyl) indicates the lens power required to correct astigmatism. The cylinder value always follows the sphere value in your prescription. If you do not have astigmatism or you have a very slight astigmatism, your prescription will not include a cylinder value. Cylinder can be documented with a minus or plus sign and always include an axis (AX) to locate the correct meredian. At easee we always prescribe cilinders following the (-) sign.

The Axis (AX) always follows the cylinder in a prescription. The axis is documented in degrees and refers to the direction that the cylinder power is located to correct the astigmatism.

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Making eye care accessible to everyone


We have 3 short questions before we can get started.

1. The eye-exam takes about 20 minutes from beginning to end. Is now a good time?

● No lost time traveling or waiting for your appointment. The only minutes spent is on the test itself.

Glad to hear you’re not in a hurry. This will improve the results.

Do you have a smartphone, together with a laptop (or tablet), and 3 meters of space at your disposal?

● Your smartphone will function as a remote, and is also used together with a laptop (or tablet) to perform the online eye-exam.

That’s great! We’re almost good to go. Just one more thing.

Do you have your current eyewear prescription at your fingertips?

● Your prescription powers your eyewear. Our optometrists use your old one as areference for validating your new prescription.

Take the exam now, or save it for later?

Based on experience, we advise you to take your time with the online eye-exam to optimize your results. We can email you a link to proceed whenever you’re ready.

    If you want to do it right now or maybe you are just curious, no problem.


    Great, you’re all set!
    Let’s get started

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