Visual and Auditory.

Blephar/o refers to the eyelid. Ophthalm/o and ocul/o both refer to the eye. Aur/o refers to the ear.

The sclera is the tough outer white covering of the eyeball. The iris is the colored portion surrounding the pupil. The cornea is the transparent covering over the front of the eyeball. The pupil is the central dark opening of the eye.

PERRLA is a medical abbreviation used in eye examinations. It stands for pupils equal, round, and reactive to light and accommodation. The other options are not the correct expansion of this abbreviation.

The lens lies behind the pupil and refracts (bends) light to focus it on the retina. The macula is the central part of the retina, responsible for central vision. The iris is the pigmented body surrounding the pupil. The cornea is the transparent protective covering over the front of the eyeball.

Hyperopia means farsightedness. Myopia is nearsightedness. Presbyopia is age-related impairment in vision. Amblyopia is reduced vision from poor visual development.

Tinnitus is a ringing sensation in the ears. Presbycusis is age-related hearing impairment (the suffix -acusis refers to hearing). An otoscope is an instrument for examining the ears (oto- means ear). Astigmatism is a visual disturbance caused by an irregular cornea shape.

Cerumen is another name for ear wax. It is produced by glands in the ear canal. The incus is a small bone in the middle ear. The organ of Corti contains sensory receptors and is found in the inner ear. Ossiwax is not a real medical term.

The malleus, incus, and stapes are the three small bones (ossicles) of the middle ear. The cochlea is a spiral, coiled tube in the inner ear. The organ of Corti is found within the cochlea and contains hearing-sensitive receptors. The vestibule is a chamber connecting the cochlea and semicircular canals, responsible for balance.

The inner ear contains the semicircular canals, the cochlea, and the vestibule. The pinna is the fleshy part of the outer ear. The eardrum (tympanic membrane) separates the outer ear from the middle ear. The stapes is found in the middle ear.

Otosclerosis is formed from oto (ear) and sclerosis (hardening). It means abnormal hardening of the ossicles. Presbycusis is age-related hearing impairment. Audiometry is a hearing test (audio = hear, metry = measure). Vertigo is a feeling of being off balance or that the environment is spinning.