True statement about dark adaptation include:
a. there is a shift in peak spectral sensitivity from 555 nm to 505 nm with dark adaptation
b. rods are more sensitive than cone during dark adaptation
c. biphasic changes only occur in retina which processes both rods and cones
d. all above
a. there is a shift in peak spectral sensitivity from 555 nm to 505 nm with dark adaptation
b. rods are more sensitive than cone during dark adaptation
c. biphasic changes only occur in retina which processes both rods and cones
d. all above