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Simulate bitemporal hemianopia arising from optic chiasm compression. Explore complete temporal visual field loss, junctional scotoma patterns, and graded severity. Inspect ΔE color shift and chromaticity deviation. Advanced neuro-ophthalmology visualization tool with chiasmatic decussation anatomy, pituitary pathology overview, and perimetry-based simulation pipeline.

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Base color
Model & settings
Field loss severity50%
Image simulation
Upload JPG/PNG (max 1200×1200). Simulated canvas next to original.
Research notes
Bitemporal hemianopia arises when a lesion compresses decussating nasal fibers at the optic chiasm, removing the temporal half-field from both eyes. Gradual edge mode simulates incomplete compression with a gradient transition zone. Preserve central 10° retains macular vision, common in early chiasmal compression before macula fiber involvement.
Swatches — Reference vs Temporal Field Loss
Reference
HEX: — • RGB: — • xy: —
Field Loss Sim
HEX: — • RGB: — • xy: —
ΔE (CIE76)
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ΔE (CIEDE2000)
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Deep preview
Reference
Simulated
Chromaticity (CIE xy)
Achromatic axis (to D65)
D65 white point: 0.313, 0.329
Image simulation

Simulations operate in linear sRGB for perceptual correctness. ΔE2000 implemented locally. Temporal field attenuation is applied as a bilateral horizontal mask. Use the severity slider to blend from normal (0%) to complete bitemporal hemianopia (100%).

Multi-condition comparison
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Compare normal, Condition A and Condition B across multiple severities. If an image is loaded it will be processed into the grid, otherwise color swatches are shown.