Colored streaks in the eyes are usually more common in three situations. In the first case, the eyes are dry, causing the tear film to become unstable on the surface of the eye and form a refractive phenomenon, similar to a rainbow, on seeing more colorful situations, which can be relieved after dropping eye drops with artificial tears such as sodium glassate. In the second case, there may be glaucoma, the occurrence of glaucoma or pre-glaucoma will have this symptom, called rainbow vision, will have a colorful feeling in the corner of the eye or around the look. You need to go to the hospital for an eye pressure and fundus examination and, if necessary, a visual field examination to diagnose and rule out glaucoma. The third condition is seen in middle-aged and elderly people who will experience glare after cataract surgery, and also a rainbow-like colorful sensation around the circle of glare light. Since the IOL may be a little uncomfortable when it is first placed, it will slowly become slightly better as the postoperative period lengthens.