Floaters and Flashes: When Should You Worry?

Most people notice the occasional speck or strand drifting across their vision from time to time. These floaters, as they're commonly known, are usually harmless. However, understanding when floaters might signal something more serious is important for protecting your sight.

Floaters are tiny clumps of cells or material floating within the vitreous, the clear gel that fills the inside of your eye. When light enters your eye, these clumps cast shadows on your retina, which you perceive as spots, threads, or cobweb-like shapes. They're particularly noticeable when looking at plain, bright backgrounds like a clear sky or white wall.

As we age, the vitreous gel naturally becomes more liquid and can shrink slightly, pulling away from the retina in a process called posterior vitreous detachment. This is extremely common, particularly after the age of 50, and often causes a sudden increase in floaters. While this sounds alarming, it's usually a normal age-related change that settles down over time.

However, the same process can occasionally cause problems. If the vitreous pulls on the retina as it separates, it can create a tear. Retinal tears, if left untreated, can lead to retinal detachment, a sight-threatening emergency. This is why certain symptoms should always prompt urgent attention.

See an optometrist or eye casualty immediately if you experience a sudden shower of new floaters, particularly if accompanied by flashing lights. Flashes occur when the vitreous tugs on the retina and stimulates the light-sensitive cells. A shadow or curtain appearing across your vision is another warning sign that demands urgent investigation.

The key word is sudden. A gradual increase in floaters over months or years is usually nothing to worry about. A dramatic, sudden onset, especially with flashes or any loss of vision, needs same-day assessment.

At Atlantic Home Eyecare, we can examine the health of your retina as part of a comprehensive eye examination. If you're experiencing concerning symptoms, however, please don't wait for a routine appointment. Contact your optometrist urgently or attend an eye casualty department.

For routine eye health checks and monitoring of existing floaters, we're here to help across Devon, Somerset, Cornwall, and Gloucestershire.