CLAT Surgical Planning Process
Corneal Lamellar Ablation for TransplantationCLAT is a 3 step surgical process to create both a uniformly thin receiving bed and a dimensionally matched donor lamella. When the shaped donor lamella is placed within the receiving bed, a full thickness regularized cornea results having preserved the patient's endothelium, Descemet's membrane, and the posterior stroma.
Unlike keratome or laser keratome lamellar surgeries, CLAT removes the irregularities in the cornea in preparation of receiving the matched uniform thickness donor. This process yields significantly improved refractive characteristics of the cornea. Keratome or laser keratome based surgeries which reference the anterior surface, leave the corneal irregularities in the post-op cornea and therefore a significantly more aberrated refractive condition.
HOST |
DONOR |
P R E O P |
Pre-op pachymetry map of the cornea in which the receiver bed will be created. Image highlights irregular corneal thickness with the warm colors representing areas of minimum thickness. |
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Pre-op Donor pachymetry map* (NOTE*: Donor pachymetry map is sumulated from user input value. Tomographic measured values are a future feature.) |
P R E O P |
3-D view of same data |
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3-D view of same data |
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S R G C A L P L A N |
Custom ablation profile map to create the receiver bed . The green area represents the area in which the minimum ablation depth is performed. |
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Donor ablation profile map*. This ablation plan thins the donor and is performed as transendothelial. |
S R G C A L P L A N |
3-D view of same data |
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3-D view of same data |
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P O S T O P |
Receiver bed created. Planned pachymetry map of the prepared receiver bed highlights the new uniformly thin receiver bed, |
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Donor (simulated*) added to receiver bed and displayed |
P O S T O P |
3-D view of same data |
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3-D view of same data |
