TY - GEN AU - ALPERN,M TI - Variability of accommodation during steady fixation at various levels of illuminance SN - 0030-3941 PY - 2000///0701 KW - Accommodation, Ocular KW - Eye KW - Head KW - Humans KW - Vision, Ocular N1 - Publication Type: Journal Article UR - https://doi.org/10.1364/josa.48.000193 ER -