Transpupillary thermotherapy: effect of wavelength on normal primate retina.

Purpose: To correlate changes in primate fundus after transpupillary thermotherapy (TTT) at two wavelengths.

Methods: Twelve primate eyes were treated with TTT using a wavelength of 635 nm (n=7) or 810 nm (n=5). Laser parameters were as follows: 635 nm (spot size, 1 mm; duration, 30-8 seconds; and fluence [power over time], 20-91.