What are the risks of smart glasses?

Could you please elaborate on the potential risks associated with smart glasses? I'm curious about the security vulnerabilities they might pose, as well as any privacy concerns they could raise. Additionally, I'm interested in understanding the potential health hazards, such as eye strain or other vision-related issues, that might result from prolonged use. Furthermore, are there any specific scenarios or circumstances where the use of smart glasses could be particularly risky or problematic? Thank you for addressing these concerns.