What Are the Symptoms of a Retinal Detachment?

Floaters and flashes often come from changes in the vitreous gel inside the eye. As the vitreous shifts with age, it can pull on the retina. Most floaters are not dangerous, but a sudden shower of floaters or flashes can signal a retinal tear or detachment.

For patients searching online, the most important point is that similar symptoms can have very different causes. New floaters, flashes, cobwebs, shadows, peripheral vision loss, and sudden blur can be mild or serious depending on timing, severity, one-eye versus both-eyes involvement, and whether vision is changing. A medically trained eye examination is often the difference between treating the right problem and chasing symptoms with the wrong drops.

The retina is the light-sensitive tissue lining the back of the eye. The vitreous is the clear gel that fills the center of the eye. With age, nearsightedness, trauma, inflammation, or after eye surgery, the vitreous can separate from the retina. That process can create floaters, flashes, or a cobweb sensation. The danger is that traction can tear the retina, allowing fluid to pass underneath and detach it. That is why new symptoms deserve a dilated retinal exam.

Urgent warning signs include sudden new floaters, flashes of light, a curtain or shadow in vision, loss of side vision, decreased vision, eye trauma, or symptoms after recent eye surgery.

An ophthalmologist performs a dilated retinal examination, checks peripheral retina carefully, measures vision and eye pressure, and may use retinal imaging, optical coherence tomography, or ultrasound if the view is limited.

A posterior vitreous detachment without a tear is usually observed. Retinal tears may be treated with laser or freezing treatment. Retinal detachment requires prompt retinal surgical care.

Do not wait days or weeks with new flashes, a curtain, or sudden floaters. Do not assume a floater is harmless until the retina has been examined.