Definition af nethinden

Nethinden: De nethinden Er nervelaget, der linjer bagsiden af ​​øjet sanser lyset og skaber impulser, der bevæger sig gennem synsnerven til hjernen. Der er et lille område kaldet makulaen i nethinden, der indeholder specielle lysfølsomme celler. Macula giver os mulighed for at se fine detaljer tydeligt.

De eye has a number of other components. Dese include the cornea iris elev Objektivoptisk nerve og glasagtig.

De cornea is the clear front window of the eye that transmits and focuses light into the eye.

De iris is the colored part of the eye that helps regulate the amount of light that enters the eye.

De elev is the dark aperture in the iris that determines how much light is let into the eye.

De lens is the transparent structure inside the eye that focuses light rays onto the nethinden.

De optic nerve is the nerve that connects the eye to the brain and carries the impulses formed by the nethinden to the visual cortex of the brain.

De vitreous humor is a clear gel that fills the middle of the eye.