LE2 Flashcards
The following conditions may cause sudden visual loss except
a. Amaurosis fugax
b. Anterior ischemic optic neuropathy
c. Retinal detachment
d. Cataract
d. Cataract
- The following conditions can cause anisocoria except
a. Herniation
b. CN II paralysis
c. NOTA
d. Horner syndrome
b. CN II paralysis
Anisocoria refers to a condition where the two pupils of the eyes are of unequal size. The optic nerve (CN II) is responsible for vision, not pupil size. Pupil size and reaction are mainly governed by the sympathetic and parasympathetic pathways involving CN III (oculomotor nerve). Thus, CN II paralysis wouldn’t typically cause anisocoria. The other options can be associated with anisocoria. (NOTA usually means “None Of The Above,” and if “Homer syndrome” is a typo and you meant “Horner’s syndrome,” then Horner’s syndrome can indeed cause anisocoria.)
- The afferent arm of the pupillary light reflex
a. Optic nerve
b. Trochlear nerve
c. Abducens nerve
d. Oculomotor nerve
a. Optic nerve
- 40 year old female with 2 month history of headaches and blurring of vision. On fundoscopy, the following is noted. What is your most likely diagnosis
a. Central retinal artery occlusion
b. Optic neuritis
c. Retinal detachment
d. Papilledema
d. Papilledema
Rationale:
Papilledema is swelling of the optic disc due to increased intracranial pressure. The clinical symptoms of headaches and blurred vision combined with fundoscopic findings of swollen optic disc would be most consistent with papilledema. The other options provided have distinct clinical and fundoscopic presentations different from the scenario described.
- Which of the following is a painful, idiopathic inflammatory orbital syndrome?
a. Carotid-cavernous fistula
b. Grave’s ophthalmopathy
c. Orbital pseudotumor
d. Orbital cellulitis
c. Orbital pseudotumor
Rationale:
Orbital pseudotumor, also known as idiopathic orbital inflammation, is a painful inflammatory condition of the orbit without a known cause. It is not associated with systemic disease and is not infectious. The inflammation can involve any structure within the orbit.
A 24 y/o female consulted for right eye proptosis. She was involved in a vehicular crash 2 weeks prior. On examination, there was noted of proptosis and chemosis of the left eye, with limited extraocular movements. There was also note of bruit on auscultation. What will be the definitive management for the patient?
a. Observation
b. Steroid therapy
c. Endovascular technique/intervention
d. Antibiotic treatment
c. Endovascular technique/intervention
Rationale:
The presentation described suggests a carotid-cavernous fistula (CCF). CCFs can occur traumatically, as might be the case following a vehicular crash. Symptoms of a CCF include proptosis (bulging of the eye), chemosis (swelling of the conjunctiva), decreased eye movement, and a bruit that can be heard over the eye or orbit. The definitive management for a traumatic CCF is typically endovascular intervention to close off the abnormal connection between the carotid artery and the cavernous sinus.
Which of the following is consistent with subconjunctival hemorrhage?
a. Associated with severe pain
b. May be caused by increased venous
pressure
c. Usually resolves after 6 months with intensive pharmacologic treatment
d. Usually presents with purulent discharge.
b. May be caused by increased venous pressure
Subconjunctival hemorrhage can be caused by factors that increase venous pressure, such as sneezing, coughing, or heavy lifting. It is typically painless and often resolves on its own within a few weeks without treatment.
Considered as transient ischemic attack of the retina:
a. Anterior ischemic optic neuropathy
b. Amaurosis fugax
c. Papilledema
d. Optic neuritis
b. Amaurosis fugax
Amaurosis fugax is often described as a transient loss of vision in one eye, usually lasting just a few minutes, and is considered a type of transient ischemic attack (TIA) of the retina.
A 57 y/o female previously diagnosed with rheumatoid arthritis consulted for dry red eyes with concomitant burning sensation. What is the most likely diagnosis?
a. Herpes zoster
b. Allergic conjunctivitis
c. Orbital cellulitis
d. Keratoconjunctivitis sicca
d. Keratoconjunctivitis sicca
Keratoconjunctivitis sicca, commonly referred to as dry eye syndrome, is often associated with autoimmune conditions like rheumatoid arthritis. It presents with dry, red eyes and a burning sensation.
a. Right superior quadrantanopia
b. Right homonymous hemianopia
c. Left homonymous hemianopia
d. Left superior quadrantanopia
a. Right superior quadrantanopia
- Which of the following is the most common cause of sensorineural hearing loss in adults?
a. Labyrinthitis
b. Menieire’s disease
c. Presbycusis
d. Radiation exposure
c. Presbycusis
A 30-year old female came into your clinic complaining of partial hearing loss with feeling of fullness on the left ear. He has a history of colds for the last 5 days and fever for the last 2 days. On examination, you noticed an intact, erythematous and bulging tympanic membrane. Which of the following measures will prevent hearing loss in this patient?
a. Prompt antibiotic coverage
b. Immediate cranial CT scan
c. Immediate tympanoplasty
d. Immediate hearing test to isolate the type of hearing loss
a. Prompt antibiotic coverage
- Which of the following is consistent with hyperthyroidism
a. Weight gain
b. Dry puffy face
c. Cold skin
d. Tremors
d. Tremors
- During confrontation test, you note that your patient has bitemporal hemianopia. Which structure is most likely affected?
a. Occipital lobe - (total homonymous hemianopia)
b. Optic radiation - (homonymous hemianopia)
c. Optic nerve - (scotoma)
d. Optic chiasm - (bitemporal hemianopia)
d. Optic chiasm - (bitemporal hemianopia)
- When the right eye looks up and out, which of the following extraocular muscles is tested?
a. Superior oblique
b. Superior rectus
с. Inferior rectus
d. Inferior oblique
b. Superior rectus
- Which of the following will present with masked like fascie, decreased blinking and a characteristic stare?
a. Parkinson’s disease
b. Nephrotic syndrome
c. Hyperthyroidism
d. Myxedema
a. Parkinson’s disease
- Which of the following findings is not characteristic of a cranial nerve III palsy?
a. Limited eye adduction
b. Miotic pupil
c. Pupil is deviated down and out
d. Ptosis
b. Miotic pupil
- A 40 year old male developed a doubling of vision progressively over 5 months. Confrontation test revealed the following. Which structure is most likely affected?
a. Both optic nerves
b. Left optic radiation
c. Right occipital lobe
d. Optic chiasm
d. Optic chiasm
If the confrontation test showed a bitemporal hemianopia (loss of the outer half of the visual field in both eyes), the most likely affected structure would be:
Rationale:
Bitemporal hemianopia is classically associated with lesions of the optic chiasm, often due to conditions such as pituitary tumors pressing on the chiasm.
- Which of the following is consistent with Horner’s syndrome?
a. Small irregular pupils that do not accommodate
b. Mydriasis
c. Impaired extraocular muscle movement
d. Anhidrosis
d. Anhidrosis
- Normal features of the optic disc, except?
a. Physiologic cup horizontal diameter is less than half of the disc diameter
b. Yellowish white central physiologic cup
c. White optic disc
d. Blurred nasal portion
c. White optic disc
- Which fibers of the optic nerve cross at the optic chiasm?
a. Nasal fibers of the optic nerve
b. There is no crossing of fibers occurring at the level of the optic chiasm
c. Both nasal and temporal fibers
d. Temporal fibers of the optic nerve
a. Nasal fibers of the optic nerve
Rationale:
At the optic chiasm, the nasal (or medial) retinal fibers from each eye cross to the opposite side. These fibers carry visual information from the temporal (or lateral) visual fields of each eye. In contrast, the temporal (or lateral) retinal fibers do not cross and continue on the same side. This arrangement allows for binocular vision and depth perception.
- A 50 year old female consults for blurring of vision. Visual acuity test using Snellen chart revealed 20/40 on the right eye which improved upon pinhole test. What is the most likely diagnosis?
a. Intracranial tumor
b. Error of refraction
c. Optic neuritis
d. Presbyopia
Answer: b. Error of refraction
Rationale:
When visual acuity improves with the use of a pinhole test, it typically indicates a refractive error. The pinhole acts as a tool to eliminate peripheral rays of light, allowing only the central rays to enter the eye, which helps correct for refractive errors like myopia, hyperopia, or astigmatism. The fact that the vision improved upon pinhole testing suggests that the blurring is due to a refractive error rather than a pathological process affecting the retina or optic nerve.
- How many cardinal directions of gaze are tested during EOM testing?
a. Six
b. Five
с. Four
d. Seven
a. Six
24.
The distance by which a patient should hold the jaeger chart during visual acuity examination
a. 20 feet
b. 20 inches
c. 14 inches
d. 2 feet
c. 14 inches
Rationale:
The Jaeger chart is used to test near vision. It is typically held at a distance of 14 inches from the patient’s eyes during the examination. This standard distance allows for a consistent assessment of near visual acuity.
Which of the following is consistent with a cranial nerve VI palsy
a. esotropia
b. Difficulty in eye adduction
c. exotropia
d. Eye deviated down and out
a. esotropia
The following are true of tuning forks except
a. If you have to perform these tests with a single fork, pick the 512 Hz
b. To set the tuning fork into vibration, strike it against a firm surface like tabletops
c. Tests done with these include rinne’s and weber’s
d. To set the tuning fork into vibration, strike it against firm surface like your elbow
b. To set the tuning fork into vibration, strike it against a firm surface like tabletops
To straighten the ear canal, pull the pinna (<3 y.o)
a. Downward, backward and away from the head
b. Downward, forward and away from the head
c. Upward, backward and away from the head
d. Upward, forward and away from the head
a. Downward, backward and away from the head
To straighten the ear canal, pull the pinna (>3 y.o)
a. Downward, backward and away from the head
b. Downward, forward and away from the head
c. Upward, backward and away from the head
d. Upward, forward and away from the head
c. Upward, backward and away from the head
In unilateral conductive hearing loss, sound is heard in which ear?
a. Both ears are affected
b. The good ear
с. The impaired ear
с. The impaired ear
How is conductive hearing loss reported in the rinne’s test
a. BC>AC
b. Lateralizes to the good ear
c. Lateralizes to the bad ear
d. AC>BC
a. BC>AC
- Vertigo is described as:
a. Unsteadiness or imbalance when walking, specially in older patients
b. None of the above
c. A spinning sensation accompanied by nystagmus and ataxia
d. A near faint from “feeling faint or lightheadedness”
c. A spinning sensation accompanied by nystagmus and ataxia
A 45 year old male with a one (1) year history of ear fullness only on the right ear, occasional blood streaked nasal discharge and a right lateral neck mass should make you suspicious of which condition?
a. Nasal polyp
b. Recurrent tonsillitis
c. Nasopharyngeal carcinoma
d. Adenoid hypertrophy
c. Nasopharyngeal carcinoma
A patient diagnosed with oropharyngeal squamous cell carcinoma complains of otalgia. Which cranial nerves are most likely involved?
a. VII and IX
b. V and VII
c. IXandX
d. VandX
a. VII and IX
Non-healing lesions/masses in the oral cavity need to be biopsied when they have been present for at least how many days?
a. 21 days
b. 14 days
c. 7 days
d. 28 days
b. 14 days
When one uses the otoscope, it is important to remember to:
a. Use the largest-sized aural speculum that
can fit the patient’s ear canal
b. Use the smallest-sized aural speculum that can fit the patient’s ear canal
c. Aural speculum size appropriate for the age of the patient
d. Use the middle-sized aural speculum that can fit the patient’s ear canal
a. Use the largest-sized aural speculum that
can fit the patient’s ear canal
When performing anterior rhinoscopy, it is important to remember that when you remove the nasal speculum from the patient’s nostrils:
a. None of the above
b. The nasal speculum must be closed
c. It does not matter whether the nasal speculum is opened or closed
d. The nasal speculum must be opened
d. The nasal speculum must be opened
When removing the nasal speculum from the patient’s nostrils, it should be opened to prevent pinching or causing discomfort to the nasal tissues.
Characteristic of sensorineural hearing loss:
a. They have trouble understanding speech
b. Results from problems in the outer ear
c. Results from problems in both outer and middle ear
d. Noisy environments make hearing better
a. They have trouble understanding speech
Sensorineural hearing loss typically affects the inner ear or the auditory nerve. Patients with this type of hearing loss often have difficulty understanding speech, especially in noisy environments.
When examining the oral cavity, the gag reflex can be elicited when the tongue depressor touches that sensitive structure/s
a. None of the above
b. Posterior pharyngeal wall
c. Tonsillar area
d. Posterior third of the tongue
e. All of the above
e. All of the above
The gag reflex is a protective reflex to prevent choking and aspiration. Touching the posterior pharyngeal wall, the tonsillar area, or the posterior third of the tongue can elicit the gag reflex.
- Unilateral foul-smelling nasal discharge in children is usually due to:
a. Foreign body
b. Nasal polyp
c. Papillomas
d. Sinusitis
a. Foreign body
How do you differentiate nasal polyps from turbinates?
a. Polyps have a “peeled grape” appearance
b. Polyps decrease in size when a decongestant is administered intranasally
c. Touching a nasal polyp with a probe is painful for the patient
d. All of the above
a. Polyps have a “peeled grape” appearance