Related Experiment Video
Updated: Dec 13, 2025

Corneal Donor Tissue Preparation for Descemet's Membrane Endothelial Keratoplasty
Published on: September 17, 2014
[Recurrent DMEK failure]
1Klinik für Augenheilkunde, Universitätsklinikum des Saarlandes UKS, Kirrberger Str. 100, 66424, Homburg/Saar, Deutschland. Cedricmatar@uks.eu.
Abstract:
We report a Patient with Fuchs dystrophy who underwent three Descemet Membrane Endothelial Keratoplasties (DMEK) caused by recurrent graft failure with raise in intraocular pressure and cystoid macular edema. At the third DMEK, herpes was detected in the anterior chamber tap and an adequate therapy was initiated. At the 6 months follow-up the cornea remained clear, visual acuity was 0.8, intraocular pressure was within normal range and macular edema regressed completely. Either a latent Herpes simplex Virus (HSV) infection of the patient was reactivated or an infected donor lamella was transplanted with donor-to-host-to-donor ping-pong transmission.
Insights
A patient with Fuchs dystrophy experienced recurrent graft failure after three Descemet Membrane Endothelial Keratoplasties (DMEK). Herpes simplex virus (HSV) infection was detected and treated, leading to successful corneal clarity and vision recovery.
Area of Science:
- Ophthalmology
- Virology
Background:
- Fuchs dystrophy is a progressive eye condition affecting the cornea.
- Descemet Membrane Endothelial Keratoplasty (DMEK) is a surgical procedure to treat corneal endothelial dysfunction.
Observation:
- A patient with Fuchs dystrophy underwent three DMEK surgeries due to recurrent graft failure, elevated intraocular pressure, and cystoid macular edema.
- Herpes simplex virus (HSV) was identified in the anterior chamber during the third DMEK procedure.
Findings:
- Initiation of antiviral therapy led to complete resolution of macular edema.
- At six months post-treatment, the cornea remained clear, visual acuity improved to 0.8, and intraocular pressure normalized.
- The HSV infection may have been a reactivation of a latent patient infection or transmitted via the donor graft (ping-pong transmission).
Implications:
- This case highlights the potential for HSV reactivation or transmission during DMEK procedures.
- Early detection and management of viral infections are crucial for successful corneal transplantation outcomes.
- Further investigation into donor graft screening for latent viruses may be warranted to prevent transmission.
Related Concept Videos
Restarting Stalled Replication Forks
Restarting Stalled Replication Forks
Cardiomyopathy II: Dilated Cardiomyopathy
Errors occurring during blood pressure monitoring
Several factors...
Random Error
Multimachine Stability
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:

