c l i n i c a l f o l i o s : n a r r a t i v e





A D V E R T I S E M E N T

 

Corneal Transplant: 1

A D V E R T I S E M E N T

   
 

The patient was a soft contact lens wearer who developed a Pseudomonas corneal ulcer.       

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Corneal Transplant: 2

A D V E R T I S E M E N T

   
 

There is dense central corneal scar and deep corneal vascularization superiorly. A scleral fixation ring is sutured to the superficial sclera using a 6-0 Vicryl suture on a spatulated cutting needle.  Interrupted sutures are placed in each of the four quadrants. The ring provides an external scaffold to prevent scleral collapse once the eye is opened. It is particularly useful in pediatric and aphakic eyes.     

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Corneal Transplant: 3

A D V E R T I S E M E N T

   
 

The host cornea is measured to determine the size of the graft, taking into consideration factors such as corneal size, underlying pathology, and risk of rejection. For average-sized corneas, an 8.0 mm diameter host trephine will often be sufficient. For smaller than average corneas, a 7.5 or 7.75 mm host trephine may be necessary, and for larger than average corneas, an 8.25 or 8.5 mm host trephine may be used.

 If the graft is too small, sutures into or close to the visual axis may cause significant astigmatism. Large sized grafts which place the graft-host junction close to the limbus increase the risk of graft rejection.     

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This page was last modified on 3/21/2001.