Comparative study demonstrates varying retinal damage levels in rabbits when exposed to different laser wavelengths, suggesting wavelength impacts retinal safety.
Since laser radiation consists of essentially parallel rays, the wavelengths to which the ocular media are relatively transparent are focused by the eye at or near the fundus. greatly concentrating the energy in the process. Because retinal damage can result, the differential effects in respect to wavelength and power levels are of considerable importance. In this study, damage to the rabbit retina was induced by irradiation with ncodymium. ruby and frequency doubled ncodymium lasers. The neodymium laser (wavelength 1.060 nanometers) produced the smallest lesions and least damage. The ruby (694.3 nm) and frequency doubled neodymium (530 nm) lasers caused lesions similar in size and seven‐day post‐irradiation histopathology except for interlayer adhesion differences.
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Kent et al. (1969) studied this question.
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