Paediatric vision simulator

This program is a work in progress and is not yet final.

Enter the child’s refraction and visual acuity result, then use the slideshow to show parents an approximate visual explanation of how reduced acuity and uncorrected refractive error may affect everyday detail.

1. Refraction input

Binocular estimate uses the better-eye blur level, as this is usually closer to how a child functions with both eyes open.

2. Simulation controls

Fine tune blur strength

Use this to soften or intensify the demonstration when explaining the result to parents.

Right eye prescription

Sphere

Cylinder

Axis

Left eye prescription

Sphere

Cylinder

Axis

Use plus or minus cylinder exactly as written. The simulation uses spherical equivalent and cylinder magnitude to estimate blur.

3. Paediatric VA method

Method of VA testing

4. Visual acuity result

Observed acuity

For Cardiff/Kay/Lea/HOTV, choose the closest recorded LogMAR or Snellen equivalent available in clinic.

Calculated output

Selected eyeRE

Rx blur0.00D

Acuity0.00

Blur levelMinimal

Parent demonstration slideshow

Photos automatically update with the selected prescription, VA method and acuity level.

Child’s uncorrected view

Mountain waterfall RE • Cardiff Cards • 0.00 LogMAR

Add own photo

Clear comparison

Child’s simulated view

This is an educational communication aid only. It does not diagnose the child’s vision and cannot perfectly reproduce amblyopia, suppression, accommodation, crowding, attention or binocular vision. Hyperopic blur may be overestimated or underestimated because some children can accommodate through plus prescriptions.