Fig. 7
From: Corneal safety assessment of germicidal far UV-C radiation

Simulation of penetration depth in porcine cornea (a), human cornea with non-intact (thin) epithelium (b), human cornea with intact epithelium (c) in the wavelength range from 200 to 300 nm using forward Monte Carlo simulation. The simulations in the human cornea were based on the optical properties of the porcine cornea. Light penetration depends on wavelength and epithelium integrity. In human corneas, thinning of the epithelium increases penetration. Furthermore, simplified 3D models with light propagation of 222 nm (d, e, f), 233 nm (g, h, i), 254 nm (j, k, l) show that penetration depth increases with wavelength: 254 nm > 233 nm > 222 nm. The authors refer the reader to the online version of this article for a color representation.