The histological comparison of the effect of 50mW green and blue laser on the human eye at variable time intervals: an animal model.

Objective: To compare the effects of 50mW green and blue laser pointers on retinal tissue with different exposure durations.

Methods: The experimental, histopathological study was conducted from November 2021 to April 2022 at the Postgraduate Laboratory of the Department of Physiology and Medical Physics, College of Medicine, Mustansiriyah University, Iraq, and comprised adult male mice. They were divided into green group G and blue group B.

Histological assessment of the effect of 50mW red laser on retina at variable time intervals: animal model.

Objective: To assess the histopathological effect of 50milliWatt red laser pointer on mice retinal tissue at variable exposure times.

Methods: The experimental study was conducted in the Postgraduate Laboratory of the Unit of Medical Physics, Department of Physiology, College of Medicine, Mustansiriyah University, Baghdad, Iraq, from November 2020 to April 2021, and comprised albino mice. Histopathological effects on the retinal tissues were evaluated microscopically using conventional haematoxylin and eosin stain just after being exposed to commercially available 50 milliWatt red laser pointers with 630nm wavelength at 1, 2 and 3 minutes, grouped as R1, R2 and R3, respectively.