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Evaluation of cut quality using the Amadeus microkeratome with different settings
Mana Tehrani1, Stefanie Schäfer, H Burkhard Dick
1Department of Ophthalmology, Johannes Gutenberg-University, Mainz, Germany. tehrani@augen.klinik.uni-mainz.de
Journal of Cataract and Refractive Surgery
|November 3, 2004
Summary
High oscillation rates and low head-advance speeds optimize keratectomy specimen quality. This finding enhances precision in customized refractive surgery using microkeratomes.
Area of Science:
- Ophthalmology
- Surgical Technology
- Biomedical Engineering
Background:
- The Amadeus microkeratome (AMO) is utilized in refractive surgery.
- Optimizing keratectomy specimen quality is crucial for surgical outcomes.
Purpose of the Study:
- To evaluate the quality of keratectomy specimens produced by the Amadeus microkeratome (AMO).
- To assess the impact of varying oscillation rates and head-advance speeds on specimen quality using scanning electron microscopy (SEM).
Main Methods:
- Corneal cuts were performed on pig eyes using the Amadeus microkeratome.
- Nine combinations of oscillation rates (8000, 13,000, 18,000 rpm) and head-advance speeds (1.0, 2.5, 4.0 mm/s) were tested.
- Specimen surfaces and edges were analyzed using scanning electron microscopy (SEM).
Main Results:
- Increased head-advance speed at fixed oscillation rates resulted in lower cut quality, rougher surfaces, and irregular edges.
- Increased oscillation rates at fixed head-advance speeds improved cut quality and surface smoothness.
Conclusions:
- High oscillation rates and low head-advance speeds yield smooth, regular keratectomy surfaces and edges.
- Adjustable microkeratomes can maximize surface smoothness for improved customized refractive surgery.