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Astigmatism
An inability to focus images properly because the cornea of the eye is not perfectly curved
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Braille
A system that uses letters made from combinations of raised dots that allows a blind person to read
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Cataract
The gradual yellowing and hardening of the lens of the eye
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Cerumen
- A waxy substance that helps to protect the external auditory canal by
- trapping dirt and other particles; commonly referred to as "earwax"
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Cerumen impaction
A condition that occurs when ear wax builds up and becomes packed in the external auditory canal
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Conductive hearing loss
Hearing loss that results when something prevents sound waves from reaching the receptors in the cochlea of the ear
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Conjunctivitis ("pink eye")
- Infection and inflammation of the conjunctiva, a clear membrane that
- lines the inside of the eyelids and covers most of the surface of the
- eye; characterized by redness, swelling, itching, burning and excessive
- tearing
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Diabetic retinopathy
A complication of diabetes that can lead to blindness
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Glaucoma
A disorder of the eye that occurs when the pressure within the eye is increased to dangerous levels
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Hyperopia
Farsightedness; trouble seeing objects that are close
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Macular degeneration
A vision disorder that results from the build-up of deposits in the macula (part of the retina) and eventually leads to blindness
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Myopia
Nearsightedness; trouble seeing objects that are far away
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Otitis externa
An infection of the lining of the external auditory canal; commonly referred to as "swimmer's ear"
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Otitis media
An infection of the middle ear that is common in young children
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Otosclerosis
An inherited form of hearing loss
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Presbycusis
Age-related hearing loss
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Presbyopia
Age-related loss of the eye's ability to focus on objects that are close
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Referred (radiating) pain
Pain that is felt somewhere other than where it originated
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Sense organs
A general term used to describe the eyes, the ears, the nose, and the taste buds
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Sensorineural hearing loss
Hearing loss that occurs when the receptors in the ear are unable to receive stimuli or transmit nerve impulses
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Sensory receptors
Specialized cells or groups of cells associated with a sensory nerve
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Tactile receptors
- Receptors found in the skin that are stimulated when something comes in
- contact with the surface of the body and presses on them, causing them
- to change shape
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Tinnitus
Ringing in the ear
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