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sense organs, the ear has 2 funtions - Coggle Diagram

- - - - eyebrows: divery the sweat from the forehead to protected the eyes
        eyelashes:hair that sift light and retain duts
        eyelids: cover the eyeball avoiding impacts
        lacrimal glands: produce tears that lubricate and clean the eye
        extraocular mucles : move the eye into the orbit
    - - sclera
        cornea
        chorid
        retina
        iris
        pupil
        crystaline lens
        aqueous humour
        vitreous humour
        ciliary muscles fovea
        blind spot
        optic nerve
    - - accomodatioon: is the ability of lens to change. shaped to see things
        
        Far point: flattened
        
        near point:curved
      - the path of light
        
        1- the light enters to the cornea
        2- pupil change the size according to the amout of light
        3- cristaline lens
        4-retina
        5- optic nerve
        6- brain
    - - myopia:distand objects aout of focus because the eyeball is too long
      - hypermetropia:close objects appear out of focus because the eyeball is too small
      - asigmatism: objects appear blurred due to the irregular shape of the cornea
      - cataracts. the loosing of the transparency in the crystalline lens
      - conjuntivitis: an inflamation of the conjuntiva due to an allergy or infection
      - colour blidness: is the inhability to distinguish somo colours