| Term 
 
        | Anosmia, hyposmia, parosmia, or cacosmia |  | Definition 
 
        | Injury to the olfactory nerve (CN I) |  | 
        |  | 
        
        | Term 
 
        | Loss of vision in the left |  | Definition 
 
        | Damage to the retina of the left eye or the left optic nerve before it reaches the chiasm |  | 
        |  | 
        
        | Term 
 
        | Loss of vision in the right |  | Definition 
 
        | Damage to the retina of the right eye or the right optic nerve before it reaches the chiasm |  | 
        |  | 
        
        | Term 
 
        | Bitemporal (heteronomous) hemianopsia (loss of lateral vision in each eye) |  | Definition 
 
        | Damage to the optic nerve at the chiasm |  | 
        |  | 
        
        | Term 
 
        | Left homonymous hemianopsia (loss of vision on left half of vision in each eye) |  | Definition 
 
        | Damage to the right optic tract |  | 
        |  | 
        
        | Term 
 
        | Left superior quadrantanopsia (loss of vision in upper left quadrant of each eye) |  | Definition 
 
        | Damage to right optic radiation |  | 
        |  | 
        
        | Term 
 
        | Left homonymous hemianopsia with macular sparing (loss of vision on left half of vision in each eye, with macula spared) |  | Definition 
 
        | Damage to right striate cortex |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Injury to the cornea or contents of the anterior chamber |  | 
        |  | 
        
        | Term 
 
        | Symptomatic convergence insufficiency (the inability to maintain binocular function (keeping the two eyes working together) while working at a near distance)) |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | Eye displaced outward and downward |  | Definition 
 
        | Complete occulomotor nerve palsy (CN III) |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Occulomotor nerve (CN III) palsy |  | 
        |  | 
        
        | Term 
 
        | Vertical diplopia when looking downward which improves with contralateral head tilt and worsens with ipsilateral head tilt |  | Definition 
 
        | Injury to the trochlear nerve (CN IV) |  | 
        |  | 
        
        | Term 
 
        | Affected eye turning medially |  | Definition 
 
        | Complete injury to the abducens nerve (CN VI) |  | 
        |  | 
        
        | Term 
 
        | Affected eye is seen at midline at rest, but the patient cannot deviate the eye laterally |  | Definition 
 
        | Incomplete injury to the abducens nerve (CN VI) |  | 
        |  | 
        
        | Term 
 
        | Corneal drying, abrasions, decreased salivation |  | Definition 
 
        | Injury to the trigeminal nerve (CN V) |  | 
        |  | 
        
        | Term 
 
        | Anaesthesia of the forehead, eyebrow, and/or nose |  | Definition 
 
        | Injury to the trigeminal nerve (CN V) |  | 
        |  | 
        
        | Term 
 
        | Corneal testing with cotton swab - ipsilateral and contralateral stay open |  | Definition 
 
        | Trigeminal nerve (CN V) paresis |  | 
        |  | 
        
        | Term 
 
        | Corneal testing with cotton swab - ipsilateral and contralateral close |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | Corneal testing with cotton swab - ipsilateral stays open, and contralateral closes |  | Definition 
 
        | Facial nerve (CN VII) paresis |  | 
        |  | 
        
        | Term 
 
        | Hyperacusis, and/or an unusual or impaired sense of taste |  | Definition 
 
        | Injury to the facial nerve (CN VII) |  | 
        |  | 
        
        | Term 
 
        | Complete or partial paralysis of the face, hyperacusis, and/or an unusual or impaired sense of taste |  | Definition 
 
        | Cranial trauma - both longitudinal and transverse fractures of the temporal bone hitting the facial nerve |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Injury to the vestibulocochlear nerve (CN VIII) |  | 
        |  | 
        
        | Term 
 
        | Tinnitus, hearing loss, deafness |  | Definition 
 
        | Injury to the vestibulocochlear nerve (CN VIII) |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Injury to the nuclei of the glossopharyngeal and vagus nerves |  | 
        |  | 
        
        | Term 
 
        | Drooling, difficulty initiating swallowing, nasal regurgitation, difficulty managing secretions, choke/cough episodes while feeding, and food sticking in the throat |  | Definition 
 
        | Injury to the nuclei of the glossopharyngeal and vagus nerves |  | 
        |  | 
        
        | Term 
 
        | Aphonia or weak/hoarse voice |  | Definition 
 
        | Injury to the vagus nerve (CN X) |  | 
        |  | 
        
        | Term 
 
        | Locked-in syndrome (severely decreased bowel sounds, intact response to suppository, and elevated but unchanging pulse) |  | Definition 
 
        | Injury to the nucleus of the vagus nerve and nerve tract |  | 
        |  | 
        
        | Term 
 
        | Weakness on the left side and protusion of the tongue toward the left |  | Definition 
 
        | Injury to the left hypoglossal nerve (CN XII) |  | 
        |  | 
        
        | Term 
 
        | Weakness on the right side and protusion of the tongue toward the right |  | Definition 
 
        | Injury to the right hypoglossal nerve (CN XII) |  | 
        |  | 
        
        | Term 
 
        | Dysarthria and swallowing difficulties |  | Definition 
 
        | Injury to the hypoglossal nerve (CN XII) |  | 
        |  |