Light enters the eye through structures in the following order
cornea>pupil>lens>retina
The retina is made up of several layers of cells, in the following order: ganglion cells, amacrine cells, bipolar cells , horizontal cells, photoreceptors.
Thus light passes through 4 cell layers in the retina before hitting the photoreceptors (rod and cones), which initiates the process of vision. Notice that all the structures light encounters before hitting the absorbing pigments in the photoreceptors are completely transparent to visible light, but not necessarilly to infr-red or ultra-violet light. Cornea, Iris, Retina a. cornea, iris, retina
When light enters the eye it must pass through the cornea, the aqueous humor surrounding the lens (anteriorly and posteriorly) or front & back, the vitreous humor within the globe of the eye, and finally makes connection with the fovea centralis of the retina, which is then converted to an electrical signal and sent to your brain, allowing you the perception of sight. :-D
cornea,pupil,iris,retina,rods,cones
cw: That is a trick question, because the light bounces off the back of the eyeball to excite the rods-cones. The cones face "backward" (so to speak), etc. BTW, the retina has cones, etc.
The parts of the eye in the order light reaches them is...
Conjunctiva
Cornea
Aqueous Humor
Pupil of Iris
Vitreous Humor
Retina
First the cornea second pupil third lens and fourth retina
That would be the lens in the cornea.
cornea pupil lens retina
Pupil.
As light enters the eye, it passes through the cornea and the lens and is eventually focused onto the retina.
As light enters the eye, it strikes the receptor cells of the retina, called the rods and cones.
Light bounces off the leaf, enabling the eye to detect its color and shape as light also enters the retina.
the iris
ROYGBIVRedOrangeYellowGreenBlueIndigoViolet
Pupil.
Lens
As light enters the eye, it passes through the cornea and the lens and is eventually focused onto the retina.
Light rays enter the eye through the cornea.
The retina
As light enters the eye, it strikes the receptor cells of the retina, called the rods and cones.
the retina! where else, it burns it and riuns your eye
lens
Light bounces off the leaf, enabling the eye to detect its color and shape as light also enters the retina.
bend it They bend the light so that the cornea and (eye) lens may focus the light on the retina.
The cornea is responsible for focusing the light that enters the eye. It is the transparent portion of the eye that covers the front of the eye