An Integrated Stepwise Approach to the Treatment of Graft Disease in a Patient with an Implanted Iris Lens Diaphragm and Concomitant Postkeratoplastic Ametropia (Clinical Case)

Abstract

The purpose: to analyze the clinical and functional results of the complex staged treatment of graft disease in patient with an implanted iris lens diaphragm and concomitant postkeratoplastic ametropia using descemet’s stripping endothelial keratoplasty using a femtosecond laser (FS-DSEK) and MyoRing implantation into a corneal graft using a femtosecond laser on the example of a clinical case. Methods. Patient M., 51 years old, was admitted with a diagnosis of the left eye: corneal transplant disease, condition after penetrating keratoplasty, iridoartifakia, avitria, optic nerve subatrophy, high myopia. To treat the graft disease, the patient underwent FS-DSEK using a FemtoVisum 1 MHz (Troitsk, Russia). Twelve months after FS-DSEK to correct irregular postkeratoplastic astigmatism and concomitant high-grade myopia detected after restoration of the transparency of the penetrating corneal graft, the MyoRing was implanted into the penetrating corneal graft using a femtosecond laser. Results. After performing FS-DSEK, the transparency of the penetrating corneal graft was completely restored, visometry, refractokeratometry, and keratopachymetric data were stabilized by 6 months after the operation. 12 months after FS-DSEK, uncorrected visual acuity (UCVA) increased from 1.6 to 1.2 LogMAR, best corrected visual acuity (BCVA) increased from 1.6 to 0.8 LogMAR. Loss of endothelial cell density of the posterior layered graft was 27.4 %. MyoRing implantation into a penetrating corneal graft made it possible to significantly increase the UCVA from 1.3 to 0.3 LogMAR and the BCVA from 0.8 to 0.2 LogMAR. The spherical component of refraction decreased from -6.25 to -0.75 D, the cylindrical component of refraction — from -9.25 to -1.25 D, the regularity, sphericity of the corneal graft and its biomechanical properties increased (corneal resistance factor increased from 8.2 to 9.4 mm Hg, corneal hysteresis — from 7.9 to 9.1 mm Hg). Conclusion. A complex staged technique of descemet’s stripping endothelial keratoplasty using a femtosecond laser followed by MyoRing implantation into the corneal graft using a femtosecond laser is an effective and safe method for treating graft disease in a patient with an implanted iris lens diaphragm and concomitant postkeratoplastic ametropia.