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The primary function of safety glasses is to protect eyes from impacts. These glasses are specifically designed to be more durable than regular eyewear, providing a shield against flying debris, chemicals, and other hazards that can cause eye injuries in various work environments, such as construction sites or laboratories. They often meet specific safety standards to ensure they can withstand certain levels of impact, making them essential for anyone working in environments where there is a risk of eye damage.

While enhancing vision clarity and reducing glare are important features of many types of eyewear, safety glasses prioritize eye protection above these aspects. Additionally, the provision of a corrective prescription is not a primary function of safety glasses; they can be made with prescription lenses, but their main purpose remains as protective gear. Thus, the integral role of safety glasses lies in their ability to safeguard the eyes, which aligns with their designated function in various industrial and occupational settings.