Deep Anterior Lamellar Keratoplasty (DALK) Using Acellular Corneal Tissue Promotes Corneal Allograft Survival in High Risk Patients

Deep Anterior Lamellar Keratoplasty Using Acellular Corneal Tissue Promotes Corneal Allograft Survival in High Risk Patients

The purpose of this study is to study whether deep anterior lamellar keratoplasty (DALK) using acellular tissue will promote corneal graft survival in high risk patients.

Inclusion Criteria:

• severe bacterial keratitis
• Herpes simplex keratitis
• severe fungal keratitis
• partial limbal deficiency after chemical burn

Exclusion Criteria:

• posterior stroma involved in severe bacterial and fungal keratitis
• dry eye
• glaucoma or intraocular pressure greater than 21 mmHg
• amblyopia
• retinal abnormalities
• patients with severe systemic diseases not good for ocular surgery