👁️ What is Stage 3 Keratitis?
Stage 3 keratitis is a severe, sight-threatening condition affecting the cornea (the clear front part of the eye).
It is most serious in:
👉 Neurotrophic Keratitis
🧠 What happens in the eye?
At this stage:
- The cornea develops a persistent open wound (ulcer)
- The deeper layer (stroma) begins to thin or “melt”
- There is a high risk of perforation (a hole forming in the eye)
🚨 This is a medical emergency
📊 Stages of Neurotrophic Keratitis
| Stage | Description |
|---|---|
| Stage 1 | Mild surface damage (no open wound) |
| Stage 2 | Persistent epithelial defect (open sore) |
| Stage 3 | Ulcer + stromal thinning/melting (severe stage) |
🔍 Symptoms (Severe Stage)
- Severe eye pain (may be reduced in neurotrophic cases due to nerve damage)
- Red eye
- Blurred or significantly reduced vision
- Light sensitivity (photophobia)
- Visible corneal damage
⚠️ Why it is dangerous
The cornea becomes extremely thin, which can lead to:
- ❗ Corneal perforation
- ❗ Infection
- ❗ Permanent vision loss
🔄 How it progresses
- Starts as surface damage (Stage 1)
- Becomes a non-healing defect (Stage 2)
- Progresses to ulcer and tissue breakdown (Stage 3)
👉 Caused by failure of healing and collagen breakdown
🩺 Management (Urgent Treatment)
💊 Medical treatments
- Topical antibiotics → prevent or treat infection
- Lubrication (artificial tears) → protect and hydrate the eye
👁️ Supportive treatment
-
Bandage contact lens (BCL)
→ protects the cornea and supports healing
🧬 Advanced treatment
-
Amniotic membrane transplantation (AMT)
→ helps repair and regenerate the cornea
🔧 Surgical options (if severe)
- Corneal gluing → seals small perforations
- Corneal transplant → replaces damaged cornea
⚠️ Differential Diagnosis
Must be distinguished from:
👉 Microbial Keratitis
- Caused by infection
- Often more painful
- Requires antimicrobial treatment
❤️ Prognosis
- ✅ Early treatment can save vision
-
❗ Delayed treatment may lead to:
- Permanent damage
- Vision loss
- Need for surgery
🧠 Mental Health Impact
Severe eye conditions can lead to:
- Anxiety about vision loss
- Fear of blindness
- Stress from urgent treatments
👉 Emotional support and reassurance are important.
🚨 When to seek urgent help
Seek immediate medical attention if:
- Severe eye pain
- Sudden vision changes
- Red, worsening eye
- Eye condition not improving
📘 Easy Read Summary
- Stage 3 keratitis is very serious
- The cornea develops an ulcer and becomes thin
- Risk of a hole in the eye (perforation)
- Needs urgent treatment
- Early care can save vision
📝 Module 3 – Quick Learning Check
1. What happens to the cornea in Stage 3 keratitis?
👉 It develops an ulcer and becomes very thin (stromal melting)
2. Why is this condition an emergency?
👉 Because the cornea can perforate, leading to vision loss
3. Name one treatment used in severe keratitis.
👉 Examples:
- Topical antibiotics
- Artificial tears
- Bandage contact lens
- Amniotic membrane transplant
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