Cataract Lens Protein Aggregation & Light Scattering (2D)

This is the 2D-native counterpart to the 3D cataract lens simulator. Rather than orbiting instanced spheres inside a rendered lens ellipsoid, it runs a genuine 2D Brownian-dynamics coagulation view of crystallin aggregates diffusing inside a lens cross-section disc, a photon-packet Monte Carlo transport model where every photon independently samples its free path from the exact Beer–Lambert exponential distribution and either scatters away or survives to the far edge, and a live transmission-vs-wavelength spectrum — all three panels driven by the identical Rayleigh-scattering, volume-conserving coarsening physics used by the 3D version, so every slider still traces the same lens; only the representation is genuinely 2D. Drag and scroll the coagulation view to explore it, watch the running Monte Carlo transmission estimate converge to the closed-form curve, and press Animate to watch the lens age.