Yes, you can certainly be a flight attendant if you have "bad" eyesight, provided that your vision is correctable to 20/20 (or 6/6 in metric) with glasses or contact lenses. Most airlines worldwide, including major carriers like Emirates, Delta, and IndiGo, explicitly state that corrective lenses are perfectly acceptable for cabin crew. The primary requirement is that your vision is strong enough to perform safety duties, such as reading manuals, identifying small details in an emergency, and effectively communicating with passengers. During your medical exam, an eye test will be conducted to ensure your corrected vision meets the regulatory standards. Some airlines may require you to carry a spare pair of glasses in your cabin bag as a safety precaution in case your primary pair or lenses are damaged during a flight. While "natural" 20/20 vision is not required, any underlying eye conditions that cannot be corrected—such as severe color blindness or a significantly reduced field of vision—may pose a challenge during the medical certification process, as cabin crew must be able to distinguish emergency lights and signals.