@TicTac Sunglasses generally work in a simple way. Different materials (plastics) are transparent above certain wavelengths, but opaque to wavelengths below that threshold. As an example, I was looking into getting a manufacturing laser for work, and when you use these types of equipment, special safety glasses are necessary - but the glasses aren't really all that special - they're made from a type of plastic that is opaque to UV (which is the wavelength the laser puts out). In fact, the glasses look clear, because they are transparent to wavelengths above UV. Sunglasses, in general, are made from plastic that is opaque to UV, but are tinted to dim all the light coming through them so it's comfortable to be out in bright sunshine without squinting.
So, normal sunglasses that say they block UV will protect your eyes from your light, but the "special" glasses would help with color correction so things don't look so purple, so you can identify problems with your plants.
ETA - if you don't want the special glasses, just put a normal type of light to inspect your plants for problems - you turn it on during inspection, then turn it off.
