Lamellar Keratoplasty Fig 518b

Principle: This involves replacement of a superficial stromal opacification with a partial-thickness donor graft of clear corneal tissue.

This surgery requires the corneal epithelium, Descemet's membrane, and the deeper layers of the cornea to be intact and healthy as it is only suitable for removing superficial opacifications down to about the middle of the cornea. The donor corneal button is then sutured with one or two continuous sutures or with interrupted sutures.

154 5 Cornea Acute diffuse allograft rejection.

154 5 Cornea Acute diffuse allograft rejection.

Fig. 5.21 a The graft is opacified and thickened. b The slit lamp image reveals precipitates posterior to the cornea.

Indications: Corneal opacifications and scars affecting the superficial corneal stroma (post-traumatic, degenerative, dystrophic, or postinflammatory opacifications). This method is not suitable for treating corneal ulcers.

Allograft Rejection (Complications): Allograft rejection is less frequent than in the case of penetrating keratoplasty. There is also less danger of infection as lamellar keratoplasty does not involve opening the globe.

How To Reduce Acne Scarring

How To Reduce Acne Scarring

Acne is a name that is famous in its own right, but for all of the wrong reasons. Most teenagers know, and dread, the very word, as it so prevalently wrecks havoc on their faces throughout their adolescent years.

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