Question

approved eye protection devices (such as goggles) are worn in the laboratory... to avoid eye strain to improve your vision only if you dont have corrective glasses any time chemicals, heat, or glassware are used

Explanation:

In a laboratory, eye - protection devices like goggles are worn to safeguard eyes from potential hazards such as chemicals, heat, or broken glassware. They are not for avoiding eye strain, improving vision, or only for those without corrective glasses.

Answer:

Any time chemicals, heat, or glassware are used