A simple how to make-it-yourself, universal slit-lamp and microscope shield for eye care professionals: ophthalmologists, optometrists.
https://www.youtube.com/watch?v=wvnx_KIUE9A
https://www.youtube.com/watch?v=pXm624pBDUM
https://www.youtube.com/watch?v=G5wxU2UV0nI