Glaucoma is a serious eye condition that can sneak up on you without warning, so it's crucial to know the early signs. Symptoms to watch out for include blurry vision, halos around lights, intense eye pain, and sudden sight loss. In some cases, nausea or vomiting may accompany these symptoms. If you notice any of these warning signs, it's important to seek medical attention right away as glaucoma can lead to permanent vision loss if left untreated. Remember, early detection is key when it comes to protecting your vision.