All screens can be washed if they have finger prints or greasy residue but they are easily damaged.
Use a slightly stiff hair brush with mild detergent. Do not rub with your fingers or any cloth.
Rinse in distilled water and quickly dry with compressed air.
It is preferable to just used compressed air for dry dust.
Stubborn dust can be coaxed off with a washed brush that has been fully dried.

If you are a perfectionist, before installation, use a loupe to check for dust especially in the central area.