Corneal trephination with the femtosecond laser.

Abstract:

PURPOSE:To evaluate the feasibility and cut quality of corneal trephination in human donor corneal tissue with the femtosecond laser. METHODS:Twelve human corneoscleral discs were inserted in an artificial anterior chamber. After corneal thickness measurement and tonometry, the cornea was mounted on a femtosecond laser (FEMTEC; 20/10 Perfect Vision, Heidelberg, Germany) through a contact lens (patient interface). Trephination was performed with diameters of 7.0, 7.5, 8.0, and 8.5 mm in 3 corneas each. The corneal button was removed from the corneoscleral disc in 2 of the 3 corneas in each case. The cut was not manipulated in the remaining corneas to enable histologic detection of possible tissue bridges. The cut edges were macroscopically and light-microscopically examined for quality. RESULTS:Corneal buttons and corneoscleral discs could be separated by blunt dissection in all cases. Tissue bridges were more common in thicker edematous corneas than in thinner ones. Both the macro- and microscopic examination disclosed smooth rectilinear cut margins with a perpendicular cut edge. CONCLUSION:This feasibility study shows that the femtosecond laser enables sufficient trephination of human donor corneas.

journal_name

Cornea

journal_title

Cornea

authors

Meltendorf C,Schroeter J,Bug R,Kohnen T,Deller T

doi

10.1097/01.ico.0000228784.46463.e9

subject

Has Abstract

pub_date

2006-10-01 00:00:00

pages

1090-2

issue

9

eissn

0277-3740

issn

1536-4798

pii

00003226-200610000-00018

journal_volume

25

pub_type

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