Some improvements are introduced into the haze model by Krasnopolsky et al. (1992), which describes growth and precipitation of particles formed by methane photolysis. These improvements take into account a possible termination of the Voyager Ultraviolet Spectrometer (UVS) occultation observations by clouds and a more accurate presentation of the surface reflection by a modified Hapke function. All changes are within the uncertainties of the previous model, though not negligible. The particle mean radius and number density for global mean conditions vary from 0.1¿0.01 μm and 2.4 cm-3 at 30 km to 0.135¿0.015 μm and 10.4 cm-3 near the surface. The scale height of the volume extinction coefficient in the visible varies from 7 km at h=25 km to 15 km at h=5 km. The vertical optical thickness of haze is equal to (5¿1)¿10-3 at 0.47 μm. ¿ American Geophysical Union 1992