Fig. 2.

Schematic drawing of the laser exposure setup for the determinations of rabbit corneal and retinal damage thresholds at the wavelength of 1338 nm. The nominal beam diameters on the corneal plane were 0.3, 1.0, 2.0 and 3.7 mm for corneal damage, and 5.0 mm for retinal damage. For the determination of retinal damage threshold, the incident laser beam was collimated.