Dry eyes are one of the most common eye conditions to affect us, but many of us aren’t even aware that we have experienced the condition. According to the American Academy of Ophthalmology, dry eye affects nearly 5 million adults aged 50 and above, and most of us can expect to experience it at some point during our lifetime. Here’s what you need to know about the symptoms and causes of this condition, and what treatment is available should you be affected.