Pittsburgh Ocular Imaging Prefit Calculator

for biomechanics predictions

Not to be used for medical or diagnostic purposes.

*Numbers reported in red or purple are beyond the range studied and should not be used for any purpose.

Measurables Only
Measurables + Potentially Measurables

Intraocular Pressure (mmHg) 15.0

Eye Radius (mm) 12.0
Anterior Sclera Canal Opening Radius (mm) 0.91
Scleral Canal Expansion at Anterior Sclera Canal Opening (μm) 6.5
Lamina Cribrosa Depth (mm) 0.1
Lamina Cribrosa Displacement (μm) 0
Prelaminar Tissue Thickness Change (μm) -5.3

Potentially Measurables

Lamina Cribrosa Radius (mm) 0.95

Scleral Canal Expansion at Anterior Lamina Cribrosa (μm) 7.7
Scleral Canal Expansion at Posterior Lamina Cribrosa (μm) 10.8
Anterior Scleral Displacement at 3.4 mm ring (μm)43.6
Anterior Scleral Displacement at 6.0 mm ring (μm)56.8
Anterior Scleral Angle Change at 3.4 mm ring (degrees) -1.0
Anterior Scleral Angle Change at 6.0 mm ring (degrees) -0.6

The estimates on this side are based on all the parameters on the left hand side simultaneously. When a combination of parameters produces an estimate out of bounds, this estimate is highlighted in purple and the rest in red.

Strains/Deformations (%)

Lamina Cribrosa Tensile - Median0
Lamina Cribrosa Tensile - Peak0
Lamina Cribrosa Compressive - Median0
Lamina Cribrosa Compressive - Peak0
Peripapillary Sclera Tensile - Median 0
Peripapillary Sclera Tensile - Peak 0
Peripapillary Sclera Compressive - Median 0
Peripapillary Sclera Compressive - Peak 0

Stresses/Forces (kPa)

Lamina Cribrosa von Mises - Median 0
Lamina Cribrosa von Mises - Peak 0
Peripapillary Sclera von Mises - Median 0
Peripapillary Sclera von Mises - Peak 0

Material Properties

Lamina Cribrosa Modulus (MPa) 0
Effective Scleral Modulus (MPa) 0
Effective Scleral Structural Stiffness (kN/m) 0