A corneal ulcer is a health issue that you may not wish to put off. It is an open wound of the clear front of the eye that can lead to scarring of the cornea and permanent damage to your vision if the delay in treatment.
In this guide we will go over the primary symptoms, also what the causes are, also the stages through which the disease progresses and how corneal ulcer treatment is done at an eye hospital.
What Is a Corneal Ulcer?
The cornea, which is the clear dome shaped front of the eye that does the job of focusing light. A corneal ulcer is a more serious issue which is a deep open sore or loss of tissue in this area which is usually a result of an infection and is a step up in severity from a simple corneal abrasion or scratch.
As the cornea is very key to clear vision an ulcer may cause scar tissue, perforation and in the end vision loss which is why quick treatment is very important.
Causes Of Corneal Ulcer
The term keratitis which is also used for when the cornea becomes inflamed or infected and that is where many corneal ulcers present as. We see that the most causes are from infection, contact lens overuse, and damage to the eye surface.
Common causes include:
- Bacterial infection which in turn affects contact lens wearers.
- Herpes simplex virus is a cause of viral infection.
- Fungal infection after trauma which includes plant material.
- Acanthamoeba which we see in association with water exposure and also poor contact lens hygiene.
- Dry eye disease that results in breakdown of corneal surface.
- Issues related to eyelid problems like entropion or incomplete closure.
- Vitamin A deficiency which we see in kids.
Corneal Ulcer Symptoms
The most prevalent signs of corneal ulcers are pain, redness, watering, and light sensitivity. Symptoms may present very rapidly in the case of bacterial ulcers.
Other Symptoms
- Severe ophthalmic pain which may present as a burn or stab.
- Very red and weepy eyes.
- Light sensitivity which also includes pain.
- Discharge which may be clear or pus-like.
- Blurred or reduced vision.
- A white or gray spot on the cornea.
- A foreign body sensation which doesn’t go away.
- Swollen eyelids.
It is also noted that the severity of pain may not correlate with the size of the ulcer which means that what seems like a small lesion may in fact be very dangerous.
Four Stages Of Ulcer
Corneal ulcers are often described in four stages, from active infection to healing and scar formation.
| Stage | What Happens | Vision Risk |
| Progressive | The infection is active and spreading | High |
| Regression | The ulcer starts responding to treatment | Improving |
| Cicatrisation | Healing begins and scar tissue forms | Moderate |
| Sequelae | The ulcer has healed, but a scar remains | Depends on scar density |
Dense central scars may need a corneal transplant later if vision is badly affected.
Diagnosis
Diagnosis usually takes place at an eye hospital through the use of a slit lamp exam which includes the application of fluorescein to determine the size and shape of the ulcer. Also we may do a corneal scraping for culture to determine which is the present organism hence the appropriate medication. Also we may use confocal microscopy for Acanthamoeba or fungal infection and sensitivity testing for the best antibiotic or antifungal treatment. That is because treatment of corneal ulcers is based on the exact cause.
Treatment Options For Corneal Ulcer
Treatment is best started early and should be related to the cause of the ulcer. Delay in treatment increases risk of scarring, perforation, and permanent visual loss.
Bacterial ulcer
Intense topical antibiotics are what is usually used, at first very frequently by the hour and in severe cases may see the patient into the hospital. For very strong infections we may have to use augmented antibiotics.
Viral ulcer
Herpes simplex corneal ulcers are treated with antiviral agents like aciclovir and ganciclovir. Steroid drops which are a risk are avoided in active epithelial HSV disease.
Fungal ulcer
Fungi cause ulcers which in turn are treated with antifungal drops like natamycin, voriconazole, or amphotericin B. Also they tend to heal slower and require more follow up.
Acanthamoeba ulcer
This kind of infection requires a combination of PHMB and chlorhexidine drops. Also it is the most difficult to treat.
Surgery
If the cornea is at risk of perforation or the ulcer is unresponsive to treatment, we may have to do procedures like corneal gluing and therapeutic corneal transplant. Also at times dense scars may require optical penetrating keratoplasty for improved vision.
1-2-3 Rule
The 1-2-3 rule out to identify high risk corneal ulcers. An ulcer is classified as serious if any of the following are present:
- Diameter over 1 mm.
- Depth over one third of the corneal stroma.
- At the center of the visual axis.
If any of these is present the patient requires urgent specialist care instead of routine outpatient care.
Prevention Tips
The best prevention is careful eye hygiene and fast treatment of any eye problem. This is especially important for contact lens users, because poor lens care is a major risk factor for keratitis and corneal ulcer.
To lower risk:
- Follow strict contact lens hygiene.
- Never sleep in lenses.
- Never rinse lenses or lens cases with tap water.
- Wear protective eyewear for dusty, chemical, or plant-material work.
- Manage dry eye disease early.
- Ensure adequate vitamin A intake in children.
- Treat eyelid problems such as entropion or trichiasis promptly.
- See an eye doctor regularly if you have had herpetic eye disease.
Corneal Ulcer Treatment at Vasan Eye Care
At Vasan Eye Care, suspected corneal ulcers are assessed urgently because this condition can worsen quickly and damage vision. Our specialists can evaluate the cause, begin the right corneal ulcer treatment, and guide follow-up care to reduce the risk of scarring.
For severe or recurrent cases, our teams can also discuss further treatment options and the right eye treatment in India based on the infection type and corneal status.
Key Takeaways
- A corneal ulcer is an eye emergency that needs same-day specialist assessment.
- Contact lens misuse, herpes infection, bacteria, and fungal contamination are major causes.
- Common corneal ulcer symptoms include pain, redness, light sensitivity, discharge, and a white spot on the cornea.
- The 1-2-3 rule helps identify high-risk ulcers.
- Treatment must match the cause: bacterial, viral, fungal, and Acanthamoeba ulcers need different medicines.
- Untreated ulcers can scar permanently and sometimes require corneal transplantation.
Frequently Asked Questions
The best prevention is strict contact lens hygiene, avoiding sleeping in lenses, never rinsing lenses with tap water, using eye protection at work, and treating dry eye early.
It is a triage guideline used to identify high-risk ulcers: size over 1 mm, depth over one-third of the cornea, or central location in the visual axis.
They are progressive, regression, cicatrisation, and sequelae. The last stage may leave a scar that affects vision.
Early diagnosis, the right antimicrobial treatment, and strict follow-up help ulcers heal faster. You should avoid contact lenses during recovery and follow every prescribed drop schedule carefully.
References
- CDC: What Causes Contact Lens-related Eye Infections – https://www.cdc.gov/contact-lenses/causes/index.html
- Royal United Hospitals Bath: Corneal Ulcers – https://www.ruh.nhs.uk/patients/patient_information/EMD014_Corneal_Ulcers.pdf