Table 1. Diffraction from Contact Lens Gratings Using Three Laser Beams (450, 532, and 635 nm) and Comparison to the Theoretical Valuesa.
laser wavelength (nm) | Exp, amb.hum (deg) | Theo, amb-hum (deg) | Exp, full-hyd (deg) | Theo, full-hyd (deg) | Exp, hyd-tear (deg) | Theo, hyd-tear (deg) |
---|---|---|---|---|---|---|
450 | 27 | 29 | 29 | 32 | 31 | 33 |
532 | 34 | 35 | 36 | 37 | 38 | 39 |
635 | 41 | 43 | 45 | 45 | 48 | 47 |
Exp, experimental diffraction angle; Theo, theoretical diffraction angle values; amb-hum, ambient humidity; full-hyd, fully hydrated; hyd-tear, hydrated with artificial tear solution.