Progressive Lens Analyzer
Prescription Inputs
Current Glasses Prescription
OD
OS
New Prescription
OD
OS
Accommodation is only used when needed to cover extra minus. Over plus is never fixed by accommodation.
Sample Points (SE) Diagrams (click to expand)
Current Glasses
Sample points (SE)
OD
OS
New Prescription
Sample points (SE)
OD
OS
Target Distance:
Eyestrain definitions (ratio = demand divided by usable accommodative reserve)
No strain
ratio < 0.10
Mild
0.10 to 0.24
Moderate
0.25 to 0.79. Meaningful use of reserve, may fatigue over time.
Significant
0.80 to 1.99. Demand approaches or exceeds reserve, symptoms likely with sustained use and clarity may vary.
Extreme
2.00 or higher. Physiologically unrealistic for sustained clarity, predicts failure, avoidance, or symptoms quickly.
Lens Design and Map Settings
Design choices and display options
Current Glasses Design
Generic PAL uses fixed corridor and balanced distribution, with narrower usable zones.
New Prescription Design
Generic PAL uses fixed corridor and balanced distribution, with narrower usable zones.
Map Appearance and Peripheral Modeling (click to expand)
Real-Time Comparison Metrics
Current vs new, computed on the active target distance
Heatmaps
Current vs new, same scale
Current Glasses Heatmap
0.00 D to 2.00 D
OD
Predicted eyestrain through each zone (click to expand)
OS
Predicted eyestrain through each zone (click to expand)
Scale: 0.00 D to 2.00 D
Green = ideal
Red = not ideal
0.00
0.25
0.50
1.00
1.50
2.00
New Lens Heatmap
0.00 D to 2.00 D
OD
Predicted eyestrain through each zone (click to expand)
OS
Predicted eyestrain through each zone (click to expand)
Same scale as current
0.00
0.25
0.50
1.00
1.50
2.00