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A method for preparing a viable corneal endothelial layer, completely denuded of overlying stroma
Investigative Ophthalmology & Visual Science
|November 1, 1978
Summary
Researchers developed a new method to isolate the endothelium-Descemet membrane by removing corneal stroma. This technique successfully preserves the endothelial layer for potential transplantation or research applications.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Cell Biology
Background:
- Descemet's membrane transplantation is a key procedure in treating corneal diseases.
- Current methods for preparing donor tissue can be complex and may damage the endothelium.
Purpose of the Study:
- To develop and evaluate a novel method for denuding Descemet's membrane.
- To assess the viability and integrity of the endothelial layer after stromal dissection.
Main Methods:
- Treatment of corneal stroma with trypsin to soften stromal layers.
- Surgical removal of softened stromal layers.
- Automated thickness measurement, specular microscopy, light-transmission microscopy, electron microscopy, and intracellular microelectrode recordings.
Main Results:
- A viable endothelium-Descemet preparation ranging from 23 to 42 microns was obtained.
- Endothelial cell morphology appeared normal with intact junctional complexes, despite some intracellular vacuoles.
- In vitro viability and endothelial resting membrane potentials were within normal ranges.
Conclusions:
- A reliable method for obtaining a stroma-free, viable endothelial layer is presented.
- This technique offers a promising approach for corneal transplantation and research.
- Further studies are warranted to assess clinical efficacy.