A diluted alcohol solution is used in which procedure?

A diluted alcohol solution is used in which procedure?

• A. Laser Epithelial Keratomileusis
• B. Laser In-Situ Keratomileusis
• C. Phacoemulsification
• D. Penetrating Keratoplasty

Answer: (C)

Diluted alcohol is used to loosen and lift the corneal epithelium in surface ablation refractive surgeries. In Laser Epithelial Keratomileusis, a dilute alcohol solution is applied to the corneal surface to detach the epithelium so it can be moved aside or lifted, the underlying stroma is reshaped with laser ablation, and then the epithelial layer is repositioned. This approach preserves the deeper corneal layers while enabling laser reshaping. The other procedures don’t use diluted alcohol to detach the epithelium. LASIK creates a corneal flap without relying on alcohol to loosen the epithelium. Phacoemulsification is a cataract surgery that uses ultrasonic energy to break up the lens, not epithelial lifting. Penetrating keratoplasty is a full-thickness corneal transplant, which also doesn’t involve loosening epithelium with alcohol.

Diluted alcohol is used to loosen and lift the corneal epithelium in surface ablation refractive surgeries. In Laser Epithelial Keratomileusis, a dilute alcohol solution is applied to the corneal surface to detach the epithelium so it can be moved aside or lifted, the underlying stroma is reshaped with laser ablation, and then the epithelial layer is repositioned. This approach preserves the deeper corneal layers while enabling laser reshaping.

The other procedures don’t use diluted alcohol to detach the epithelium. LASIK creates a corneal flap without relying on alcohol to loosen the epithelium. Phacoemulsification is a cataract surgery that uses ultrasonic energy to break up the lens, not epithelial lifting. Penetrating keratoplasty is a full-thickness corneal transplant, which also doesn’t involve loosening epithelium with alcohol.