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Myopia

myopia, short-sightedness, negative prescription, ‘minus’ prescription, nearsightedness
Myopia is a refractive error in which you can see clearly up close but things appear blurred in the distance. It is caused by the eye being too long or having too strong a refractive power, causing the image to focus in front of the retina.

What is myopia?

Myopia, also known as short-sightedness, is a common refractive error in which you can see clearly up close, but distant objects appear blurred. It occurs because the eye is too long or the refractive power of the cornea and the lens is too strong. As a result, the image of distant objects does not fall precisely on the retina, but in front of it.

In myopia, the prescription is expressed in negative dioptres, for example -2.00 or -4.50. The higher the number, the more severe the short-sightedness and the blurrier distant vision is without correction. Myopia can develop during childhood or puberty and, in some cases, may continue to progress into early adulthood.

The condition is corrected using a negative lens, which slightly disperses the light so that the image falls precisely on the retina again. This can be achieved with glasses, contact lenses or, in some cases, refractive surgery.

Good to know

Correction with contact lenses

Myopia is often corrected with contact lenses. Soft daily, monthly or annual lenses with a negative power are suitable for most people with short-sightedness. At SMEYEL , you’ll find contact lenses for myopia in various wearing schedules and materials.

When to see an optician or ophthalmologist

If you notice that your vision is becoming blurrier when looking into the distance, or if you’re having trouble recognising faces, signs or the blackboard, have your eyes checked by an optician, optometrist or ophthalmologist. They will measure your prescription and advise you on the best correction.

Myopia and age

Short-sightedness usually begins at primary or secondary school and may increase slightly until you are in your twenties or thirties. After that, the prescription often stabilises. Regular check-ups are important, especially for children and young people.

Frequently asked questions

Myopia does not go away on its own. The condition persists and requires correction with glasses, contact lenses or refractive surgery. In children and young people, the degree of myopia may still increase; in adults, it usually stabilises. Have your eyes checked regularly by your optician or ophthalmologist.

You will need contact lenses with a negative power, for example -2.00 or -5.50, depending on your prescription. Most soft lenses are suitable for short-sightedness. If you also have astigmatism, you’ll need toric lenses. Ask your optician or optometrist for personalised advice on lenses.

A prescription of -3.00 means you are 3 dioptres short-sighted. The minus sign indicates that you need a negative lens to see clearly into the distance. The higher the number after the minus sign, the more severe the short-sightedness and the thicker the lens.

Prolonged close-up work, such as working at a computer screen or reading, can contribute to eye strain and fatigue, but whether it exacerbates myopia is still a matter of research. It is known, however, that children who play outdoors a lot may be less likely to develop short-sightedness. If you suffer from tired eyes, discuss this with your optician or optometrist.

Author & updates

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