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Corneal deformation characteristics after different refractive cornea surgical procedures

Poster Details

First Author: F.Dillner GERMANY

Co Author(s):    D. Breyer   H. Kaymak   K. Klabe   C. Pohl     

Abstract Details



Purpose:

Refractive surgery at the cornea represents a standard procedure today. We were interested, whether it is possible to describe new parameters by application of a technique, which combines scheimpflug based high speed video recording with non contact applanation. This technique might provide insight into biomechanic parameters of the cornea.

Setting:

Breyer Kaymak Augenchirurgie, Dusseldorf, Germany

Methods:

We analyzed videos pre- and postoperatively concerning several corneal refractive surgeries: crosslinking, intracorneal ring segment (ICRS) implantation, presbyobia treatment via raindrop™ implantation and myopia treatment via Relex-Smile. Parameters like pachymetry, deformation amplitude, length of applanation as well as intraocular pressure were analyzed before and after treatment.

Results:

Regarding the individual treatments, each surgery has a different impact on the corneal deformationamplitude after treatment. The intraocular pressure showed similar tendencies in each surgery category. Several other parameters showed opposing or same tendencies.

Conclusions:

The corneal flexibility is still poorly described in literature. We suggest a few parameters, which could be of future interest: deformation amplitude, applanation length, pachymetry as well as intraocular pressure. The context of these paramters could allow to describe physically a viscoelastic cornea for the first time. Future studies might give further evidence for a context between these parameters.

Financial Disclosure:

NONE

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