While affordable sunglasses may be widely available, they may not provide adequate protection for your eyes. Professional opticians, governed by national health regulations, can guide you towards sunglasses that meet your specific needs and ensure proper eye protection. Remember, the darkness of the lenses does not always indicate better protection. Different lens categories provide varying levels of protection, and the most suitable one depends on the intended use. Additionally, consider the lens color, material, and features such as gradient, reflective, and anti-reflective coatings to optimize visual clarity and protection.