A sudden shower of floaters, flashes like tiny camera flashes at the edge of your vision, or a dark curtain moving across your sight should never be brushed off. These can be warning signs of retinal detachment, a serious eye emergency that needs urgent assessment to give the best chance of protecting vision.
Retinal detachment is not usually painful, which can make it tempting to wait and see whether it settles. However, changes to vision can progress quickly. If you notice sudden or worsening symptoms, contact an optometrist or eye hospital straight away for advice. If severe vision loss occurs or you cannot access urgent eye care, attend an emergency department.
What is retinal detachment?
The retina is a thin layer of light-sensitive tissue lining the back of the eye. It works much like the sensor in a camera, receiving light and sending visual information to the brain through the optic nerve.
A retinal detachment happens when this delicate layer lifts away from the supporting tissue beneath it. Once detached, the retina cannot function normally. Without prompt treatment, the affected area may lose vision permanently.
In many cases, a small tear or hole develops in the retina first. Fluid can then pass through the tear and build up underneath the retina, causing it to separate. Not every retinal tear leads to a detachment, but a tear requires urgent assessment because treatment may prevent a more serious problem.
Retinal detachment symptoms that need same-day care
The symptoms can vary from person to person, and they do not always mean a retinal detachment is present. Still, they should be assessed urgently, particularly when they begin suddenly or become more noticeable over hours or days.
Watch for a sudden increase in floaters. Floaters can look like small dots, squiggly lines, cobwebs or specks drifting through your vision. Many people have occasional long-standing floaters that are harmless, but a new burst of them is different.
Flashing lights are another important warning sign. These flashes may be more obvious in dim light or when moving your eyes, and are often noticed at the outer edge of vision. They can occur when the gel inside the eye pulls on the retina.
A shadow, veil or curtain across part of your vision is especially concerning. It may begin at the side, top or bottom of the visual field and spread. You may also notice reduced side vision, blurring, or a patch of missing vision that does not clear when you blink.
Do not drive yourself if your vision is affected. Ask a family member or friend to help, or arrange safe transport. Acting quickly matters, particularly if central vision is still clear.
Why do flashes and floaters happen?
Inside the eye is a clear, gel-like substance called the vitreous. As we age, this gel naturally becomes more liquid and can separate from the retina. This is called a posterior vitreous detachment, or PVD.
A PVD is common and often does not threaten sight. However, as the vitreous pulls away, it can occasionally tug hard enough to cause a retinal tear. That is why a first episode of sudden flashes and floaters should not be self-diagnosed as normal ageing.
Only a thorough dilated eye examination can check the far edges of the retina properly. Depending on what is found, an optometrist may monitor the eye closely or arrange urgent review by an ophthalmologist, who is a medical eye specialist.
Who has a higher risk?
Anyone can develop a retinal tear or detachment, but some people are more likely to be affected. Risk is higher in people who are very short-sighted, particularly those with high myopia, because the eye is often longer and the retina may be thinner or more stretched.
Previous eye surgery, especially cataract surgery, can increase risk. A past eye injury, such as a blow from sport or an accident, also deserves attention if new symptoms develop, even if the injury occurred some time ago.
People who have had a retinal tear or detachment in one eye have a higher chance of an issue in the other eye. A family history of retinal detachment, certain inherited eye conditions and some inflammatory eye diseases can also affect risk.
Diabetes-related eye disease can cause a different type of retinal detachment when scar tissue pulls on the retina. This reinforces why regular diabetic eye examinations are so important, even when vision seems unchanged.
What happens during an urgent eye examination?
An urgent assessment is designed to find out whether there is a retinal tear, detachment or another cause for your symptoms. Your optometrist will ask when the symptoms started, whether they are changing, and if you have had an injury, surgery or previous eye condition.
Vision will be checked, along with eye pressure and the front of the eye. Dilating drops are usually needed to widen the pupils so the retina can be examined in detail. These drops can make your vision blurry and increase light sensitivity for several hours, so it is sensible to bring someone with you or avoid driving afterwards.
Special imaging or an ultrasound scan may sometimes be needed, particularly if bleeding or cloudiness inside the eye makes the retina difficult to see. If there is concern about a tear or retinal detachment, prompt referral to an ophthalmologist is arranged.
How retinal detachment is treated
Treatment depends on the type, size and location of the problem, as well as whether the central part of the retina, called the macula, is involved. A retinal tear without detachment may sometimes be sealed with laser treatment or cryotherapy, which uses controlled freezing. These treatments aim to create a secure barrier around the tear.
If the retina has detached, surgery is usually required. The ophthalmologist may use a gas bubble, a small silicone band around the eye called a scleral buckle, or a procedure called vitrectomy that removes the vitreous gel and repairs the retina from inside the eye. In some cases, more than one technique is used.
Recovery instructions are individual. Some patients need to keep their head in a specific position for a period after surgery, particularly when a gas bubble is used. Air travel is not safe while a gas bubble remains in the eye, so it is essential to follow the specialist’s instructions closely.
Treatment can often restore or preserve useful sight, but the final outcome depends on how quickly the problem is treated and whether the macula was affected. This is why there is no benefit in waiting for symptoms to become more obvious.
Can retinal detachment be prevented?
Not every detachment can be prevented, but regular comprehensive eye examinations help identify risk factors and changes that may need closer monitoring. This is particularly valuable for people with high myopia, a history of retinal problems, diabetes or previous eye surgery.
Protective eyewear is also worthwhile for work, DIY tasks and sports where an eye injury is possible. If you have already been told you have a retinal tear, lattice degeneration or another peripheral retinal change, keep your recommended review appointments and know which symptoms require urgent care.
For families, it is useful to remember that children and teenagers can also sustain eye injuries. A child who reports flashing lights, new floaters, a shadow in vision or a significant blow to the eye should be assessed promptly rather than waiting for a routine check-up.
Your eyesight is too valuable to gamble on a dark curtain, new flashes or a sudden swarm of floaters. Boda Family Eye Care can provide urgent eye assessment and coordinate specialist referral when needed, helping local families in Auburn and surrounding Western Sydney suburbs get clear next steps at a worrying time.