Kaleidoscope vision is a symptom of migraine. The brain creates a visual illusion of fractured or bright colors, similar to those a person might see through a kaleidoscope. Migraine can affect vision in many ways. Some people see sparkling lights or blind spots, while others experience kaleidoscope vision.

What causes a shimmer in the eye?

Kaleidoscopic vision is most often caused by a type of migraine headache known as a visual or ocular migraine. A visual migraine occurs when nerve cells in the part of your brain responsible for vision begin firing erratically. It generally passes in 10 to 30 minutes.

Why do eyes dazzle?

Flashes and floaters are common symptoms which often affect normal eyes. They usually occur because of changes that happen in the jelly-like substance inside the eye (which is called the vitreous humour). The most common causes need no treatment, do not prevent your normal visual tasks and tend to settle by themselves.