Free tool
Myopia therapy simulator
How much does each treatment slow the progression of short-sightedness? The figures come from clinical studies — sources are shown below every result.
In 3 years, at age 13
without treatment
−3.24
with treatment
−2.60
Difference
0.64 D
Example — choose the treatment you're interested in below.
The values are averages from clinical studies, extrapolated to 3 years. No individual child develops exactly this way. The starting prescription is estimated from age — entering a prescription makes the result more accurate.
shown on the prescription as "sphere" or "sph" — enter short-sightedness with a minus, e.g. -3.00
The millimetre value shows how much less the eye grew in the study than without treatment, measured over the study duration stated for each option.
Spectacle lenses
Contact lenses
Eye drops
Combination
Why dioptres matter
Short-sightedness is not just a prescription strength — it develops because the eye grows too long. Every dioptre that does not accumulate means a shorter eye. That is why treatment does not aim to avoid glasses, but to slow that growth — even if your child still needs glasses.
This simulator shows evidence-based estimates based on published study data. The displayed efficacy values are averages from clinical trials — individual results may vary. This simulator does not replace professional medical advice and does not constitute a medical recommendation. Therapy selection is the responsibility of the treating physician/optometrist.
For parents
Is your child in care for myopia? You get access to the parent portal where your child is looked after: at your optician, optometrist or ophthalmologist.
To the parent portalFor practices
For progression tracking with real measurement data. Use is free of charge for practices.
Create a practice accountEmbed this calculator on your practice website
Copy these two lines into your page. Enter the address of your appointment booking in "data-cta" — the button will then lead to you.
<div data-mk-widget="therapy-simulator"
data-cta="https://ihre-praxis.de/termin"
data-cta-label="Termin vereinbaren"></div>
<script src="https://myopia.kids/embed.js" async></script>