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1 November 1991 Keratorefractive procedures
Theo Seiler
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Proceedings Volume 1525, Future Trends in Biomedical Applications of Lasers; (1991) https://doi.org/10.1117/12.48202
Event: MedTech '91, 1991, Berlin, Germany
Abstract
Two laser types are going to find a place in refractive surgery of the cornea: the excimer laser (193 nm) and mid-infrared YAG lasers, such as Ho:YAG (2.1 micrometers ) and Er:YAG (2.94 micrometers ). Whereas the excimer laser used for photorefractive keratectomy (PRK) and phototherapeutic keratectomy (PTK) is currently studied in clinical trials, Ho:YAG and Er:YAG lasers are still in the state of preclinical evaluation. For myopic corrections excimer laser PRK has shown to be safe and effective in the range up to -7.0 D. The results compare favorably with conventional procedures such as radial keratotomy. Complications are rare. Hyperopic and astigmatic corrections using the Ho:YAG laser (HOT) are effective, but safety and stability has yet to be proven. Er:YAG laser photoablation yields a healing response in animal eyes similar to the excimer laser.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Theo Seiler "Keratorefractive procedures", Proc. SPIE 1525, Future Trends in Biomedical Applications of Lasers, (1 November 1991); https://doi.org/10.1117/12.48202
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KEYWORDS
Excimer lasers
Er:YAG lasers
Laser vision correction
Cornea
Surgery
Laser therapeutics
Ophthalmology
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