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Eye test

eye test, eye check-up, vision test, refraction test, visual acuity test, eye examination, vision measurement, measuring prescription, measuring eye values, determining spectacle prescription
An eye test is an examination during which your ophthalmologist, optometrist or optician assesses the health and refractive power of your eyes. The results provide insight into your vision and whether you need corrective measures, such as glasses or contact lenses.

What is an eye test?

An eye test is an examination during which an eye care specialist, such as an optician, optometrist or ophthalmologist, checks how well you can see and whether your eyes are healthy. During the test, various aspects of your eyes and your vision are assessed.

The most well-known parts of an eye test are:

  • Eye test: you read letters or symbols at various distances to determine how clearly you can see.
  • Refraction test: using a phoropter or trial spectacles, a test is carried out to determine whether you are short-sighted, long-sighted or have astigmatism, and what strength of correction you require.
  • Eye pressure check: the pressure inside your eyes is measured, which is important for detecting certain eye conditions.
  • Anterior segment examination: using a slit lamp, the specialist examines your cornea, iris, lens and tear film.
  • Back of the eye: sometimes the back of the eye, including the retina and the optic nerve, is examined using an ophthalmoscope.

An eye test is usually carried out by an optician or optometrist, and in the case of certain symptoms or conditions, by an ophthalmologist. The test is designed to assess your vision and determine whether you need glasses or contact lenses, or whether further investigation is required.

Good to know

When should you have your eyes tested?

It is advisable to have your eyes tested regularly, even if you have no symptoms. Many opticians and optometrists recommend a check-up every two years, or more frequently if you already wear glasses or contact lenses, or if your eyesight changes rapidly. If you experience symptoms such as blurred vision, headaches, tired eyes or sensitivity to light, it is advisable to visit an optician sooner.

What happens to the results?

After your eye test, you will be given a prescription or your test results. These will include, for example, your prescription for distance and/or near vision, any cylinder values if you have astigmatism, and your pupillary distance. You can use this information to have glasses or contact lenses fitted. If you want contact lenses, there is often a further assessment to determine the fit and the type of lens.

Eye tests and contact lenses

If you want to wear contact lenses, a standard eye test is not enough. The optician or optometrist will therefore measure the curvature of your cornea and determine which type of lens and which fit are suitable for your eyes. The prescription for contact lenses may differ slightly from your spectacle prescription, as the lenses sit directly on your eye. At SMEYEL , you’ll find a wide range of contact lenses for various prescriptions and wearing schedules.

The difference between an optician, an optometrist and an ophthalmologist

An optician tests your eyesight and fits glasses and contact lenses. An optometrist has undergone more extensive training and can also detect eye functions and eye conditions. An ophthalmologist is a medical specialist who diagnoses and treats eye conditions, and can perform medical procedures. For a standard eye test, you can visit an optician or optometrist; if you have any symptoms or abnormalities, you will be referred to an ophthalmologist.

Frequently asked questions

Many eye care specialists recommend an eye test every two years, even if you have no symptoms. If you already wear glasses or contact lenses, or if you have an eye condition, you may need to have your eyes tested more frequently. If you experience symptoms such as blurred vision, headaches or tired eyes, have your eyes checked sooner.

No, a prescription for glasses is not the same as a prescription for contact lenses. For contact lenses, you need a separate examination, during which the optician or optometrist determines the fit, curvature and power of the lenses. The values may differ from your spectacle prescription, as contact lenses sit directly on your eye.

No, an eye test is not painful. Most parts of the test are non-contact, such as reading letters or looking through a measuring device. During an eye pressure check, there may be brief contact with your eye, but this feels like nothing more than a light touch. If you do feel any discomfort or anxiety, please tell the eye care specialist.

If the optician or optometrist notices anything unusual during the examination, you will be referred to an ophthalmologist for further investigation. Abnormalities can range from a simple refractive error to signs indicating an eye condition. The ophthalmologist can then make a diagnosis and, if necessary, recommend treatment or a follow-up examination.

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Publication date: 13 July 2026
Last updated: 13 July 2026