Orientation and Mobility Certification Exam

Orientation and Mobility Certification Exam


Orbit
cushions the entire eyeball
Conjunctiva
"Gooey" protective layer around the sclera
Sclera
White part of the eye
Cornea
Outer part of the iris
Iris
Colored part of the eye
ciliary muscle
Operates the closing and opening of the pupil
choroid
Vascular layer between the retina and the sclera
Retina
Back part of the eye where rods and cones are located
Lens
Refractive part of the eye
Optic nerve
Attached to the back of the eye, sends visual stimulation to the occipital lobe
occipital lobe
Located in the back of the brain where visual input is analyzed and processed
occipital chiasm
The x-shaped structure formed at the point below the brain where two optic nerves
cross each other
Temporal lobes
Side part of the brain, pathway to occipital lobe
Posterior parietal lobes
Plays important role in movement of the eyes and spatial awareness
retinitis pigmentosa (RP)
Degeneration of the retina, causes total blindness
Retinopathy of Prematurity (ROP)
Underdevelopment of the retinas, reduced acuity, possible nystagmus
diabetic retinopathy
Damage to the blood vessels located behind the retina, total blindness if no medical
intervention is taken
CVI
Neurological disorder affective visual pathways and occipital lobe, processing disorder
Retinoblastoma
Cancer of the eye, inoculation or chemo/radiation
Myopia