Purpose: The study surveyed current customers’ sports sunglasses purchasing and wearing habits in order to evaluate the current situation and the ocular side effects of wearing sports sunglasses. Methods: The study surveyed 147 customers who had been using sports sunglasses. We investigated the customers’ motivations for wearing sunglasses, their vision correction method, purchasing store, brand selection, the awareness of warnings about the use of sports sunglasses, and the ocular side effects. We used SPSS version 18 (SPSS INC., Chicago, IL, USA) for the descriptive statistics, and an independent T-test and χ2 test (chi-square test) for the statistical analysis. Results: 73.5% of the customers wore sports sunglasses for glare reduction, which was the top motivation. 10.2% of them wore them for eye protection, 9.5% for visibility, 2.7% for the aesthetic effect, and 4.1% for other purposes. 43.5% usually purchased their sports sunglasses from online stores, while 25.3% bought them from optical stores, 12.2% from specialized shops for goggles, 10.2% from duty-free shops, and 4.1% from others. 44.5% of the customers who wore sports sunglasses had experienced side effects, while 55.5% had not experienced any side effects. 40.4% of the customers had read and been informed of the risks and care instructions for wearing sports sunglasses. However, 59.5% had not read or been informed of the risks and precautions by sellers. The survey shows that 53.5% of the customers who had been informed and had read the warnings about the use of sports sunglasses had purchased them from an optical store. Conclusions: Many customers had experienced side effects from the use of sports sunglasses. The majority of the customers had purchased sports sunglasses from online stores and had received insufficient information about the risks of wearing sports sunglasses. Customers who had purchased their sports sunglasses from an optical store had been informed of the risks of wearing sports sunglasses by an optician, and had experienced fewer side effects.