Related Experiment Video
Updated: May 27, 2026

Establishing a Severe Corneal Inflammation Model in Rats Based on Corneal Epithelium Curettage Combined with Corneal Sutures
Published on: November 22, 2024
Bilateral corneal ulceration caused by vitamin a deficiency in eosinophilic gastroenteropathy
Alex P Lange1, Greg Moloney, Claire A Sheldon
1Eye Care Center, Cornea Unit, Department of Ophthalmology, University of British Columbia, Vancouver, B.C., Canada.
Purpose:
Vitamin A deficiency is a very rare condition in the developed world and can lead to a variety of ocular changes from xerosis and xerophthalmia to corneal ulcer and perforation. The treatment of this devastating disease is simple and inexpensive. It is therefore important to recognize and treat accordingly, especially in the event of ulcers unresponsive to treatment or in the presence of severe malnutrition/malabsorption syndromes. The purpose of this case report is to remind physicians of the potentially devastating effects of vitamin A deficiency on the eyes and to demonstrate outcomes after vitamin A treatment.
Methods:
Single observational case report.
Results:
A 29-year-old male with known eosinophilic gastroenteropathy was treated with oral steroids for peripheral ulcerative keratitis. Two weeks after resolution, the patient suffered from peripheral ulcerative keratitis in his other eye, with a self-sealing perforation. Vitamin A deficiency was confirmed and successfully treated, leading to subsequent resolution of signs and symptoms.
Conclusions:
Vitamin A deficiency can be present in patients with malabsorption and malnutrition syndromes and should be considered as cause of corneal ulceration.
Related Concept Videos
Photoreceptors and Visual Pathways
Peptic Ulcer Disease II: Pathophysiology
Peptic Ulcer Disease II: Pathophysiology
Damaging agents such as Helicobacter pylori, gastric acid, pepsin, and nonsteroidal anti-inflammatory drugs (NSAIDs) can weaken the mucosal defense, allowing hydrogen ions to infiltrate back and harm epithelial cells.
Gastritis-II: Pathophysiology
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
Gastritis II: Pathophysiology
Peptic Ulcer

