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Calcimator

Myopia Progression Calculator

Predict myopia progression over time based on current prescription, age of onset, and annual progression rate. Estimates adult stabilization.

Inputs

years
D
years
D/year

Results

5-Year Prediction

-4.5 D

10-Year Prediction

-7 D

Adult Prediction (~age 20)

-7 D

Total Lifetime Progression-6 D
Years Until Stabilization10 years
How to Use This Calculator
  1. Enter the patient's Current Age in years.
  2. Enter the Current Prescription as a negative diopter value (e.g., −2.00 D for −2.00 sphere).
  3. Enter the Age of Onset — the age when myopia was first diagnosed (earlier onset usually means more total progression).
  4. Enter the Annual Progression Rate in diopters per year — typically −0.25 to −0.75 D/year for children.
  5. Review the 5-Year and 10-Year Predictions and Adult Prediction (at approximately age 20) to guide myopia management decisions.

How the result changes with Annual Progression Rate

Annual Progression Rate5-Year Prediction10-Year PredictionAdult Prediction (~age 20)
-1.8-11 D-20 D-20 D
-1.3-8.5 D-15 D-15 D
-0.7-5.5 D-9 D-9 D
-0.2-3 D-4 D-4 D

What each input means

Current Age
Patient's current age in years.
Current Prescription
Current sphere power in diopters (enter as negative number for myopia).
Age of Onset
Age when myopia was first diagnosed. Earlier onset often means more progression.
Annual Progression Rate
Expected annual myopia progression in diopters per year (typically -0.25 to -0.75 D/year for children).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Current Age = 10, Current Prescription = -2, Age of Onset = 8, Annual Progression Rate = -0.5 = 4 input(s) provided
  2. Calculate 5-Year Prediction
    5-Year Prediction
    -4.5 = -4.5
  3. Calculate 10-Year Prediction
    10-Year Prediction
    -7 = -7
  4. Calculate Adult Prediction
    Adult Prediction
    -7 = -7
  5. Calculate Total Lifetime Progression
    Total Lifetime Progression
    -6 = -6
  6. Calculate Years Until Stabilization
    Years Until Stabilization
    10 = 10

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