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Simulate Goldmann-Favre syndrome (GFS) — also known as Enhanced S-Cone Syndrome (ESCS) or Goldmann-Favre vitreoretinal degeneration — a rare autosomal recessive retinal dystrophy caused by loss-of-function mutations in the NR2E3 gene (chromosome 15q22.32), which encodes Nuclear Receptor Subfamily 2 Group E Member 3, a transcription factor that normally suppresses S-opsin gene expression in rod precursors and promotes the rod photoreceptor fate during retinal development. Without functional NR2E3, developing rod precursors are misdirected: instead of differentiating into rods (sensitive to single photons, optimised for scotopic night vision), they adopt a hybrid fate — expressing S-opsin (short-wavelength cone opsin) and generating supernumerary S-cones at the expense of a normal rod complement. This produces a paradoxically enhanced short-wavelength (blue) cone ERG response alongside absent or severely reduced rod ERG, a hallmark unique to ESCS/GFS among all inherited retinal dystrophies. Clinically, affected individuals present with nyctalopia (from absent rods), progressive retinoschisis (splitting of the inner retinal layers, particularly the macula and fovea — seen as cysts on OCT), vitreous degeneration (floaters, vitreous thread/veil formation), pigmentary retinopathy in the periphery, and occasional juvenile-onset posterior subcapsular cataracts. Model three disease stages: early S-cone enhancement with mild macular retinoschisis, progressive retinoschisis with pigmentary changes and vitreous degeneration, and advanced vitreoretinal degeneration with extensive schisis. Inspect ΔE colour shift, CIE xy chromaticity, and image-level simulation. Advanced retinal genetics and photoreceptor fate determination research tool.

Goldmann-Favre syndrome colour science simulation by Auric Artisan.

Base color
Disease stage & settings
Severity / retinal degeneration 50%
Image simulation
Upload JPG/PNG (max 1200 × 1200). See how a scene appears through early ESCS S-cone enhancement, progressive macular retinoschisis, or advanced Goldmann-Favre vitreoretinal degeneration.
Research notes
Goldmann-Favre syndrome was first described by Goldmann (1944) and Favre (1958) as a condition combining vitreoretinal degeneration, night blindness, and retinoschisis. The molecular basis was identified by Haider et al. (1999) who discovered that NR2E3 mutations cause the phenotype — establishing Goldmann-Favre as the severe allelic form of Enhanced S-Cone Syndrome. NR2E3 functions as a nuclear receptor that in developing rods normally represses S-opsin expression and activates rhodopsin expression. Without NR2E3, rod progenitors abnormally express S-opsin, generating supernumerary S-cones and severely depleting the rod photoreceptor pool. The resulting retina has an inverted photoreceptor complement — with augmented S-cone sensitivity but profoundly impaired scotopic (rod) function — producing the paradoxical ERG signature: enhanced dark-adapted ERG that resembles a photopic response.
Swatches
Normal
HEX: — • RGB: — • xy: —
GFS affected
HEX: — • RGB: — • xy: —
ΔE (CIE76)
—
ΔE (CIEDE2000)
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Deep preview
Normal
GFS (deep)
Chromaticity (CIE xy)
S-cone enhancement & rod loss chromaticity shift
D65 white point: 0.313, 0.329
Image simulation

Goldmann-Favre syndrome simulations model the paradoxical photoreceptor complement of Enhanced S-Cone Syndrome — supernumerary S-cones (augmented blue-wavelength sensitivity) replacing absent rods — using a rod-absent, S-cone-enhanced channel weighting in the sRGB colour space. The dominant clinical deficits of nyctalopia (absent rod ERG) and macular retinoschisis (structural splitting of inner retinal layers) have different perceptual signatures: scotopic loss is approximated as luminance reduction; retinoschisis introduces contrast reduction and spatial distortion not fully representable as a uniform colour shift. The enhanced S-cone (short-wavelength) sensitivity may produce a subtle bluish perceptual bias in low-luminance conditions — modelled as increased relative S-channel weighting. ΔE2000 per Sharma et al. (2005). Not for clinical diagnosis — GFS/ESCS requires NR2E3 genetic testing, ERG (pathognomonic dark-adapted ERG pattern), OCT, and ophthalmic examination. Night blindness or floaters with visual disturbance require urgent ophthalmic evaluation.

Multi-condition comparison
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Compare early ESCS, progressive retinoschisis, and advanced Goldmann-Favre stages. Image simulation applies an S-cone enhanced, rod-absent photoreceptor profile with progressive contrast/luminance reduction to uploaded scenes.