The sight of blind people wearing sunglasses may seem strange to those without a visual impairment. However, this is a very common practice for those who are blind or visually impaired. Sunglasses can protect the eyes from harmful UV rays as well as improve visual clarity. This makes them a great accessory for anyone who wants to enjoy the outdoors without having to worry about damaging their eyes.
Many blind individuals also wear sunglasses because they want to communicate their blindness to those around them. This can help them avoid unnecessary explanations, lost time, and even hostility from those who do not understand the necessity of the sunglasses. In addition, it can make them feel more 'normal' and able to navigate public spaces without feeling self-conscious.
Finally, some blind people wear sunglasses because they experience pain in bright light as a result of the condition known as photophobia. This is similar to a headache, but caused by sunlight rather than another cause. Sunglasses can help reduce the amount of light that enters their eyes and decrease this discomfort, and they are often used in conjunction with a white cane or other walking aid to provide a greater level of safety for those who are blind.
Other reasons for blind people to wear sunglasses include the desire to appear more natural and less 'different' than those who can see, or simply because they want to. Blindness can be a very stigmatized thing, and it is important for those who are blind or partially blind to be able to move through public spaces without feeling awkward or uncomfortable.