Question

12 structures light must pass through in order to get through the eye and reach the actual photoreceptors called cones

the first ten are:

Bulbar Conjunctiva

Cornea

Aqueous Humor

Lens

Vitreous Humor

Ganglion Cell layer

Inner synaptic layer

Bipolar Layer

Outer Synaptic Layer

Photoreceptor Layer

are there any im missing or what would be the last two. i have to have twelve.

Answer 1

• light crosses BULBAR CONJUNCTIVA
• then, Pathway of light enter in CORNEA, which focus light ray into lens,
• which reaches to AQUEOUS HUMOR,light passes through aqueous humor
• then reaches to PUPIL,which allow the light into eyes,
• then it reaches IRIS, which control amount of light by contracting and dilating
• then it reaches to LENS, which bend and focus light on retina
• then it reaches to CILIARY MUSCLE,contract or expand to to bend andfocus light rays
• then it reaches to VITROUS HUMOR,which focus light on retina

then it reaches to RETINA which process the image inside retina crosess these layer

1. Ganglion Cell layer
2. Inner synaptic layer
3. Bipolar Layer
4. Outer Synaptic Layer

• now light reaches to FOVEA, here clear image is focused
• now PHOTORECEPTOR ,like RODS AND CONE activated,rod help to see in low light or at night
• cone help to see in bright light'
• now., OPTIC NERVE transmit the signal to VISUAL CORTEX of brain, here image is interpreted