Flashes, Floaters & Retinal Detachment
Recognise retinal warning symptoms and organise urgent peripheral retinal assessment.
Quick revision ↓ Medical Dictionary
01Vitreous change
Age-related vitreous separation can cause new floaters and brief flashes from traction. Many posterior vitreous detachments do not cause a retinal tear, but symptoms alone cannot safely identify the uncomplicated cases. Ask about onset, increase in floaters, trauma, myopia and previous surgery. Measure acuity and arrange the indicated dilated peripheral retinal assessment.
02Retinal tears
A tear allows fluid to pass beneath the retina in rhegmatogenous detachment. A shower of floaters, flashes or vitreous haemorrhage increases concern, and a normal central acuity does not exclude a peripheral tear. Direct ophthalmoscopy alone may not adequately examine the periphery. Explain why a specialist examination is needed despite apparently useful central vision.
03Detachment symptoms
A spreading shadow, curtain or missing field is an urgent warning symptom. Central vision may fall when the macula becomes involved. Retinal detachment is often painless, so absence of pain is not reassurance. Arrange emergency or urgent same-day ophthalmic assessment according to the local retinal pathway and do not defer for a routine spectacle visit.
04Treatment principles
Management depends on the type, location and extent of the retinal problem. Laser or cryotherapy may seal selected tears; established detachment may need an operation. Treatment planning is specialist work, and visual recovery varies with the disease. The undergraduate priority is timely recognition, accurate communication and safe transfer rather than promising a particular surgical outcome.
05Safety after review
Even after an initial examination finds no tear, advise prompt return for increasing floaters, new flashes, a shadow or reduced vision. Follow the recommended review schedule because pathology can evolve. After retinal surgery, explain procedure-specific instructions; if an intraocular gas bubble is present, altitude and anaesthetic restrictions require explicit specialist guidance.
High-Yield Revision
- A retinal detachment is commonly painless.
- Normal central acuity does not exclude a peripheral tear.
- New symptoms after a negative examination require reassessment.
Common Pitfalls
- Calling all new floaters harmless without retinal assessment.
- Using direct ophthalmoscopy alone to exclude every peripheral tear.
References & Further Reading
Read the relevant guideline sections alongside these original clinical teaching cases. Local pathways, available services and individual patient factors determine care.
Reference review: 28 September 2026. Consult current local protocols for prescribing, procedures and escalation.