Eye Floaters: Causes, Symptoms & When to See an Eye Doctor (2026 Guide)
- Eye Floaters: Causes, Warning Signs and When to Seek Urgent Care
- Quick Answer
- What Do Floaters Look Like?
- Common Causes and Risk Factors
- Warning Signs That Need Immediate Attention
- How Floaters Are Assessed
- Do Floaters Need Treatment?
- What Information to Share
- Authoritative Reference
- Routine Assessment or Urgent Referral?
Eye Floaters: Causes, Warning Signs and When to Seek Urgent Care
Quick Answer
Eye floaters are small spots, threads, rings or cobweb-like shapes that drift across the field of vision. Many are related to normal age-related changes and do not need treatment. However, a sudden shower of new floaters, flashes of light, a dark curtain or shadow, or sudden blurred vision can indicate a retinal tear or retinal detachment and requires urgent ophthalmic or hospital assessment.
In Kathmandu and worried about your eyes?
Book an eye exam (NPR 400 ≈ US$3) with our English-speaking optometrists in Lazimpat, Boudha or Makalbari — exams by appointment; optical shops open daily 8 AM – 8:30 PM. Card & cash accepted.
What Do Floaters Look Like?
Floaters may appear as black or grey dots, transparent circles, strings or cobwebs. They move as the eyes move and can be easier to notice against a bright sky, white wall or computer screen. They are shadows cast on the retina by material within the vitreous, the gel-like substance inside the eye.
Common Causes and Risk Factors
Floaters often develop as the vitreous changes with age. They may also occur with posterior vitreous detachment. People who are very nearsighted, have diabetes, have experienced an eye injury or have undergone cataract surgery may have a higher risk. Less commonly, floaters can be associated with bleeding, inflammation, retinal tears or retinal detachment.
Warning Signs That Need Immediate Attention
- Many new floaters appearing suddenly
- Flashes of light, especially with new floaters
- A dark curtain, shadow or missing area of vision
- Sudden blurred or reduced vision
- New symptoms after an eye injury
Do not wait for a routine optical appointment if these symptoms occur. Seek urgent assessment from an ophthalmologist or hospital emergency service. Retinal tear or detachment can be a medical emergency.
How Floaters Are Assessed
A dilated eye examination is commonly used to check the vitreous and retina and to look for a tear, detachment, bleeding or inflammation. Vision Concern can perform an initial eye assessment and guide referral. Confirm retinal and dilated-examination availability before visiting. Emergency symptoms should go directly to an appropriate ophthalmic or hospital service.
Do Floaters Need Treatment?
Most age-related floaters do not require treatment. They may become less noticeable over time. Treatment depends on the cause, and medical or surgical decisions must be made by a qualified ophthalmologist. Do not use supplements, drops or online remedies as a substitute for an examination when symptoms are new or changing.
- When the floaters started and whether onset was sudden
- Whether flashes, shadows or reduced vision are present
- Which eye is affected
- Any recent injury, surgery or severe nearsightedness
- Diabetes or other relevant medical history
For patient information on symptoms, diagnosis and urgent warning signs, see the National Eye Institute guide to floaters.
Routine Assessment or Urgent Referral?
For stable, non-urgent concerns, confirm appointment and examination availability with Vision Concern. For sudden floaters with flashes, a curtain-like shadow or sudden vision loss, seek urgent ophthalmic or hospital care immediately.
📍 Lazimpat | Boudha-Tushal | Makalbari
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In Kathmandu and worried about your eyes?
Book an eye exam (NPR 400 ≈ US$3) with our English-speaking optometrists in Lazimpat, Boudha or Makalbari — exams by appointment; optical shops open daily 8 AM – 8:30 PM. Card & cash accepted.
Yes. Many visitors, particularly from Bangladesh and West Bengal (Kolkata), come to Nepal for cataract, retina, or other eye surgery at a hospital and also want new glasses, a general eye exam, or contact lenses at the same time, before or after their procedure. Vision Concern is an optical and eye-examination clinic, not a surgical hospital, so we work alongside hospitals such as Tilganga: we are happy to see you for glasses, contact lenses, or a routine check-up either side of your surgical treatment elsewhere.
No conversion is needed. Eyeglass prescriptions from Germany, France, the UK, the USA, China, Russia, and almost every other country use the same international format, SPH (sphere), CYL (cylinder), and AXIS, measured in diopters. Our opticians read this directly, so you can bring your prescription paper, a photo of it on your phone, or simply your current glasses, and we will use the same values. If your prescription is more than a year or two old, we recommend a quick, free re-check before we make your new pair.
Yes. Above roughly 3,000 metres, UV exposure increases sharply because of the thinner atmosphere and reflection off snow, and ordinary sunglasses (category 2-3) do not block enough UV to prevent snow blindness (photokeratitis). We recommend glacier glasses or category-4 sunglasses with side shields, and can fit these with your own prescription if needed. Vision Concern offers ZEISS polarized, UV400-certified sunglasses with prescription lenses, which we can prepare before you set off on your trek.