Specular microscopy
Specular microscopy: an examination of the hidden side of the cornea
Visit specular microscopy is a specialized ophthalmological examination that studies the cells of the corneal endothelium, the innermost layer of the cornea. Although these cells are invisible to the naked eye, their proper functioning is essential to maintaining the transparency of the cornea, and therefore clear vision.
What is the role of the corneal endothelium?
The corneal endothelium forms a single layer of cells that acts as a "shield" for the cornea. regulating pump It prevents water from accumulating in the cornea, while ensuring the proper exchange of nutrients. Unlike other cells in the body, the endothelial cells do not regenerate. Their density naturally decreases with age or following trauma, eye surgery or certain diseases such as Fuchs dystrophy.
What is specular microscopy?
Specular microscopy is an examination fast, painless and non-invasivewhich is performed in an ophthalmology consultation. The patient places his or her eye in front of a specialized microscope, which captures an enlarged image of the endothelial cells. The associated software analyzes the cell densitytheir shape (hexagonal), their size (coefficient of variation), allowing even the smallest anomalies to be detected.
When is it indicated?
Specular microscopy is particularly indicated prior to intraocular surgery (such as cataract, implant or transplant), in cases of suspected corneal dystrophy or endothelial damage, for post-operative follow-up of certain procedures, in long-term contact lens wearers, or as part of a routine check-up of elderly patients or those with risk factors.
What is its clinical significance?
The condition of the corneal endothelium determines the ability of the cornea to remain clear and functional after surgery. Significant damage may contraindicate certain surgical procedures or suggest alternative treatments. Specular microscopy therefore enables informed medical decision and preventive action.
