INVESTIGATIONS OF LASER DAMAGE TO OCULAR TISSUES.
Abstract
Results of experimental investigations to determine threshold levels for minimally-sized retinal lesions caused by neodymium long-pulsed and Q-switched lasers are presented. The experimental animals were rhesus monkeys. In addition, results of retinal damage due to Q-switched ruby, neodymium, and doubled neodymium lasers at suprathreshold energy levels are also presented. A report on histopathology of retinal injury caused by Q-switched lasers is presented. Observations on damage due to both ruby and neodymium lasers are discussed. The design and construction of a fundus reflectometer is described, and preliminary measurements of fundus reflectance of rabbit, rhesus monkey, and human subjects are reported. Results of an experimental investigation to determine threshold damage levels for a CO2 laser to rabbit corneas are given. Data for three exposure times are included. In addition, theoretical calculations based on a one-dimensional heat-flow model are reported, and comparison is made with the experimental results. Finally, some results on permanent corneal damage due to CO2 laser are reported. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1968
- Accession Number
- AD0670852
Entities
People
- A. Vassiliadis
- H. C. Zweng
- N. A. Peppers
- R. C. Honey
- R. C. Rosan
Organizations
- SRI International