Total internal reflection of laser light in eyes filled with silicone oil.
BACKGROUND AND OBJECTIVES
This is the first report of clinical settings in which total internal reflection of laser light in eyes filled with silicone oil was observed.
The authors analyze this phenomenon and outline the potential hazards it may present to patient, surgeon, and operating room personnel.
MATERIALS AND METHODS
The authors observed significant reflection of laser light off the silicone-water interface both intraoperatively and in the clinic.
The critical angle according to Snell's law (i.e., the angle at which total internal reflection occurs at the interface between silicone oil and vitreous) was calculated.
The critical angle was found to be 71.9691° (72°). RESULTS : An analysis of each of the clinical conditions where this phenomenon was observed is presented.
Clinical and surgical implications are discussed.
The hazard of total internal reflection of laser light in eyes filled with silicone oil should be recognized by ophthalmologists to avoid possible complications.
Techniques for overcoming and circumventing the difficulties resulting from this phenomenon are proposed.
Mots-clés Pascal : Chirurgie, Oeil, Huile silicone, Biomatériau, Injection, Réflexion, Laser, Exposition professionnelle, Personnel, Chirurgien, Bloc opératoire, Homme, Médecine travail
Mots-clés Pascal anglais : Surgery, Eye, Silicone oil, Biomaterial, Injection, Reflection, Laser, Occupational exposure, Personnel, Surgeon, Operating room, Human, Occupational medicine
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0106089
Code Inist : 002B30B01B. Création : 16/11/1999.