Visual Disturbances: Lightning-Like Flashes When Viewing Screens - Ophthalmology

More Info

---

Experiencing lightning-like flashes or visual disturbances while looking at screens, particularly against a white background, can be concerning. This phenomenon is often related to several physiological and optical factors that can affect vision.
Firstly, the flashes you are experiencing may be attributed to a condition known as "photopsia," which refers to the perception of flashes of light that are not actually present in the environment. This can occur due to various reasons, including changes in the vitreous gel inside the eye, which can pull on the retina and create the sensation of light. This is particularly common in individuals with myopia (nearsightedness), as the shape of the eye can predispose one to such changes.
When you focus on a bright white screen or background, the contrast can exacerbate these visual disturbances. The retina is highly sensitive to light, and when exposed to bright stimuli, it can sometimes misfire, leading to the perception of flashes or streaks of light. This is similar to the afterimages one might see after looking at a bright light source and then shifting focus to a darker area.

Moreover, the phenomenon can also be linked to visual fatigue, especially for those who spend prolonged periods in front of screens. Extended screen time can lead to a condition known as digital eye strain or computer vision syndrome, which encompasses a range of symptoms including blurred vision, dry eyes, and visual disturbances. The constant focus on screens can lead to muscle fatigue in the eyes, which may contribute to the perception of flashes or other visual anomalies.

In your case, since you mentioned that the flashes are more pronounced against a white background, it could also be related to the way your visual system processes high-contrast images. The brain may interpret the sudden changes in light intensity as flashes, especially if there is any underlying sensitivity in your visual pathways.

It's important to note that while these symptoms can often be benign, they should not be ignored, especially if they are new or have changed in frequency or intensity. If you are experiencing persistent flashes, it is advisable to consult with an eye care professional. They may perform a comprehensive eye examination, including a dilated fundus exam, to rule out any serious conditions such as retinal tears or detachments, which can present with similar symptoms.

In summary, the lightning-like flashes you are experiencing while viewing screens could be due to a combination of physiological responses to bright stimuli, potential vitreous changes, and visual fatigue from prolonged screen use. While these symptoms are often benign, it is essential to monitor them and seek professional advice if they persist or worsen. Regular eye check-ups and practicing good visual hygiene, such as taking breaks from screens and ensuring proper lighting, can help mitigate these disturbances.