The smaller and/or less protected from uv exposure microorganisms are, the more their dna and cell structure is damaged. In simple terms they may be so damaged that they die. They are likely only damaged enough to be sterile. Copepods would be on the larger side of things and as a result would be less damaged. Interesting idea on the blinding. Altho would think many don’t need sight to survive
humans are pretty large too but we can't look directly at UV lamps without eye damage



