When assessing ocular health, which symptom may indicate a need for further examination?

Sudden flashes of light can indicate a potential retinal issue, such as a retinal tear or detachment, which is a serious condition that may lead to permanent vision loss if not addressed promptly. This symptom is often described by patients as seeing "lightning" or "flashes" in their vision, and it can be an urgent sign that requires further examination by an eye care professional. Investigating this symptom promptly can prevent complications and ensure appropriate treatment is administered.

Frequent blinking, persistent dry eye, and normal glare sensitivity may reflect less urgent concerns that can often be managed through lifestyle adjustments or over-the-counter treatments, indicating that they do not carry the same immediate risk of serious complications as sudden flashes of light.