Corneal ulcer




Corneal ulcer

Eyes, ears, nose and throat

Eye disorders

Color blindness

Cortical blindness


Homonymous hemianopsia

Bitemporal hemianopsia



Retinal detachment

Age-related macular degeneration

Diabetic retinopathy

Corneal ulcer


Retinopathy of prematurity

Periorbital cellulitis



Orbital cellulitis

Hordeolum (stye)


Neonatal conjunctivitis

Ear disorders

Conductive hearing loss

Eustachian tube dysfunction

Tympanic membrane perforation

Otitis externa

Otitis media

Vestibular disorders


Meniere disease


Acoustic neuroma (schwannoma)

Nasal and nasopharyngeal disorders

Choanal atresia

Allergic rhinitis

Nasal polyps

Nasopharyngeal carcinoma

Oral cavity and oropharyngeal disorders



Ludwig angina

Aphthous ulcers

Temporomandibular joint dysfunction

Oral cancer

Warthin tumor

Sleep apnea

Gastroesophageal reflux disease (GERD)

Zenker diverticulum

Retropharyngeal and peritonsillar abscesses

Esophageal cancer

Laryngeal disorders



Bacterial epiglottitis

Thyroid and parathyroid gland disorders

Thyroglossal duct cyst

Thyroid cancer



Eyes, ears, nose and throat pathology review

Eye conditions: Refractive errors, lens disorders and glaucoma: Pathology review

Eye conditions: Retinal disorders: Pathology review

Eye conditions: Inflammation, infections and trauma: Pathology review

Vertigo: Pathology review

Nasal, oral and pharyngeal diseases: Pathology review

Thyroid nodules and thyroid cancer: Pathology review

Parathyroid disorders and calcium imbalance: Pathology review


Corneal ulcer


0 / 2 complete

USMLE® Step 1 questions

0 / 1 complete

High Yield Notes

13 pages


Corneal ulcer

of complete


USMLE® Step 1 style questions USMLE

of complete

A 62-year-old woman comes to the physician complaining of a “gritty” sensation in the eyes for the last several months. She states her eyes have also been increasingly itchy and red, and she also needs to chew food for a longer period of time in order to swallow it properly. Past medical history is significant for rheumatoid arthritis that is well managed with methotrexate. Vital signs are within normal limits. Physical examination shows redness of both eyes. Bilateral wrist and first metacarpophalangeal joints show mild swelling and tenderness. There is nontender, diffuse parotid gland enlargement bilaterally. Oral examination reveals mucosal atrophy and multiple dental caries. Ophthalmologic examination reveals decreased visual acuity in both eyes. A strip of litmus filter paper is folded at one end and inserted in the patient's lower eyelid; after 5 minutes, there is < 5 mm (normal > 15 mm) of moisture on the filter paper. Multiple corneal punctate spots are noted on fluorescein staining. Labial salivary gland biopsy would most likely show which of the following findings?  

Memory Anchors and Partner Content

External Links


A corneal ulcer, also known as ulcerative keratitis, is a cornea lesion usually due to infection with bacteria, viruses, or fungi. The cornea is the clear, dome-shaped surface that covers the front of the eye. Other causes of corneal ulcers include injury (for example, from a sharp object), contact lens use, and other diseases that affect the eyes. Symptoms of a corneal ulcer include pain, redness, swelling, discharge from the eye, and blurred vision.


Copyright © 2023 Elsevier, except certain content provided by third parties

Cookies are used by this site.

USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.