Which of the following is considered an eye hazard?

Sharp objects are considered an eye hazard because they can cause serious injuries to the eyes if proper precautions are not taken. When working in environments where sharp tools or debris are present, there is a risk of objects flying into the eyes, leading to lacerations, punctures, or even blindness. Such risks necessitate the use of protective eyewear, such as safety glasses or goggles, to minimize the potential for injury.

In contrast, the other options do not pose direct threats to eye safety. Back strain, for instance, relates to musculoskeletal injuries, while cold weather can affect overall health but does not specifically threaten eye safety. Similarly, noise can be detrimental to hearing but does not create hazards for the eyes. Therefore, the presence of sharp objects in the work environment directly correlates with increased risk to eye safety, making it essential to address.