December 10, 2025

A sudden loss of vision in one eye can be alarming, it comes without warning and without pain. What appears to be a simple case of blurred vision or a dark spot could, in reality, be an eye stroke. It is a condition that demands urgent medical attention. Much like a stroke in the brain, an eye stroke occurs when blood flow to the retina or optic nerve is interrupted, depriving the eye of oxygen and nutrients. Timely diagnosis and treatment are vital to preserve sight and prevent permanent damage. Understanding its causes, symptoms, and treatment options can make the difference between recovery and irreversible vision loss.

If you’ve been noticing flashing lights in eyes, it can feel unsettling. In many people, these brief sparks, zigzags, pinpoints, or streaks come from harmless age-related changes. In others, they may signal urgent retinal problems that need prompt care.

Blurring that affects just one eye can be temporary (e.g., after waking or prolonged screen use) or persistent due to an eye or general health problem. It isn’t always dangerous, but in some cases it signals an emergency. This guide explains causes, treatment pathways, and when to seek urgent help in Bengaluru.

A blind spot in eye can feel alarming, especially if it appears suddenly or starts affecting daily tasks like reading or driving. In medical terms, this blind area in your field of view is called a scotoma. It can be temporary or permanent, small or large, and it may appear as a dark, grey, flickering, or blurry patch.
Quick note: everyone has a tiny, normal “physiological” blind spot in retina where the optic nerve exits the eye. The brain usually fills in this gap, so you do not notice it. New or expanding blind areas are different and deserve attention.