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A technique to visualize corneal incision and lamellar dissection depth during surgery
G R Melles1, F J Rietveld, W H Beekhuis
1Cornea Service, Rotterdam Eye Hospital, The Netherlands. melles@oogziekenhuis.nl
Cornea
|January 23, 1999
Summary
Surgeons can visualize corneal incision depth during surgery by filling the anterior chamber with air. This creates an optical interface for accurate depth assessment of corneal incisions and dissections.
Area of Science:
- Ophthalmology
- Surgical Techniques
- Corneal Surgery
Background:
- Accurate depth control is crucial for corneal surgical procedures.
- Current methods for visualizing incision depth during surgery can be challenging.
Purpose of the Study:
- To present a novel surgical technique for real-time visualization of corneal incision and lamellar dissection depth.
- To establish an optical reference plane for precise depth assessment during ophthalmic surgery.
Main Methods:
- The technique involves exchanging the aqueous humor with air in porcine cadaver eyes.
- An air-to-endothelium interface is created, serving as a reference plane for depth visualization.
- Corneal incisions and lamellar dissections were performed at various target depths (60%, 80%, 99%) and analyzed via light microscopy.
Main Results:
- The technique allowed for visualization of corneal thickness and relative depth of surgical cuts.
- Achieved depths for incisions and dissections closely approximated intended depths, with minor variations.
- Microperforations were noted in a small percentage of incisions made at 99% intended depth.
Conclusions:
- Filling the anterior chamber with air provides an effective optical interface for visualizing surgical depth.
- This method enhances precision and safety in corneal surgery by allowing real-time depth monitoring.