Free Clinical Tool

Myopia Progression
Calculator

Enter age + axial length. Get risk percentile, projected AL at 18, 9-treatment comparison, and a parent-ready report — in under 30 seconds.

Open Calculator Free →
📊 Based on published RCTs 🔒 No data transmitted (free) ⚡ Under 30 seconds No login required

What the Calculator Does

📈
Axial Length Projection
Projects AL to age 18 using Tideman 2018, Sanz Diez 2019, and He 2015 normative datasets. Plots on percentile growth curves with 95% confidence intervals.
⚖️
9-Treatment Comparison
Compares all evidence-based modalities side by side — Stellest®, MiSight®, ortho-K, atropine doses, MiyoSmart®, and combination therapy — ranked by projected AL for this patient.
📄
Parent Reports
Generate a branded PDF or shareable family portal link that translates clinical projections into plain language — during the appointment, no preparation required.
🎯
Composite Risk Score
5-factor risk score combining AL percentile, growth velocity, projected AL@18, parental myopia, and near-work hours. Adapted from Tideman 2018 weighting.
📡
Longitudinal Tracking
Track multiple visits over time. Growth rate, percentile trend, and treatment response update automatically with each new measurement.
🤖
AI Clinical Insights
Optional AI summary using Claude (Anthropic): intervention strategy, treatment evaluation, parent talking points. Requires API key (free tier) or included in Pro.

How to Use It — 4 Steps

1
Enter patient data
Age, current axial length (OD/OS). Prior AL measurement unlocks growth rate tracking. Or use "First visit" mode if no prior data.
~10 seconds
2
Review risk and projection
Growth rate vs. norms, percentile rank, composite risk score, and projected AL at age 18 — with and without treatment. Recommended next steps shown automatically.
Instant
3
Compare treatment options
All 9 modalities ranked by projected AL at 18 for this patient specifically. Select any treatment to see individualised projections.
~10 seconds
4
Generate report
Print a branded PDF or share a family portal link that shows growth chart and treatment comparison in parent-friendly language.
~5 seconds

Frequently Asked Questions

What data do I need to use the calculator?
Minimum: patient age and current axial length (OD and OS). A prior axial length measurement unlocks growth rate tracking. All other fields (keratometry, refraction, parental myopia) are optional and improve the risk score accuracy.
Is this a medical device?
No. MyopiaTracker is a clinical decision support tool for patient education and visualisation. It does not diagnose, prescribe, or replace clinical judgment. Not FDA-cleared as a medical device.
Where does the projection data come from?
Growth curves from Tideman et al. 2018 (Acta Ophthalmologica, n=5,766), Sanz Diez et al. 2019, and He et al. 2015. Treatment efficacy from primary RCTs: Chamberlain 2019 (MiSight), Bao 2022 (Stellest), Yam 2019 LAMP (atropine), Chia 2012 ATOM2, Lam 2020 (MiyoSmart). See the Methodology page for full references.
Is patient data HIPAA compliant?
In the free tier, all data stays locally in your browser — nothing is transmitted. Pro tier uses Google Firebase (BAA-covered Firestore). HIPAA BAA with iCare Enterprises, LLC is available on Enterprise plans only.
Does it work on tablet or phone?
Yes. The app is fully responsive and works on iPad and Android tablets. The free tier works offline — no internet required during consultations.

Related Clinical Resources

Reference
Myopia Progression Rates & Benchmarks
Normal vs dangerous AL growth rates by age. The 26mm threshold explained.
All Treatments
9 Treatments Ranked by Efficacy
Every myopia control modality compared with RCT data.
Growth Charts
Axial Length by Age — Charts & Norms
Normative percentile data and how to interpret AL measurements.
Epidemiology
Global Myopia Prevalence Data
Country-by-country prevalence for clinical context.
Methodology
How the Calculator Works
Every formula, dataset, and efficacy value documented with sources.
Pricing
Free, Pro & Enterprise Plans
Compare plans — Free is unlimited for local use. Pro adds cloud sync.

Ready to Try It?

No signup. No credit card. Under 30 seconds to first result. Free forever for local use.

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Trusted by optometrists and ophthalmologists · Based on peer-reviewed research