Is the change in the cornea to allow distance vision

Arises most commonly from a decrease in eyeball length compared to normal

Is the set of changes at the eye when switching from far to near vision

Is the change in lens curvature to allow vision of near objects

Is the set of changes at the eye when switching from near to far vision

pupil

iris

lens

retina

cornea

Reduce refraction at the eye by about 1/3

Abolish the ability to accommodate for near distances

Reduce the clarity of the image

Abolish all refraction at the eye

Abolish the ability for pupillary constriction

Is as efficient as that in rods but slower

Is not as efficient as that in rods but is faster 

Is more inefficient that that in rods because it acts on cAMP not cGMP

Is as efficient as that in rods but activates a different G protien

Is more inefficient that that in rods because it opens different ion channels

pupil

iris

lens

sclera

retina

To bind GTP and then dissociate by breaking it down into GDP and P_i

To amplify the amount of light absorbed by the chromophore

To keep open the chemically-gated ion channels in the outer segments

To hold the 11-cis-retinal in the optimal position to absorb light energy

To break down cyclic form of GMP into the linear form

emmetropia

hypermetropia

spherical abberation

myopia

astigmatism