Yes. Even though Class 1 lasers are inherently safe, especially when it is enclosed inside a device such as laser printers and CD/DVD players where accidental physical exposure is highly unlikely, it may still be hazardous if directly viewed with optical instruments such as binoculars or eye loupe.
However, Class 3B and Class 4 lasers emit the most hazardous beams and pose the greatest risk for adverse biological effects. Exposure to direct or scattered radiation from Class 4 lasers can cause permanent vision loss and instantly burn the skin. Materials susceptible to burning such as paper and fabric are also easily damaged and destroyed by Class 4 lasers.