Understanding your cloudy vision
Have you noticed cloudy or hazy vision? Any change to your sight can feel pretty alarming. This guide will give you an overview of the main potential causes of cloudy vision. Your optometrist (sometimes still called an optician) will be able to spot signs of cloudy vision during an eye test.
Different kinds of cloudy vision
Does your vision seem cloudy? There are a few different ways people experience cloudy eye vision. Some people get sudden cloudy vision in one eye, while for others it affects both. For some people, hazy eyesight lasts a few minutes, but others get it for days, or notice it gets worse over time. Whatever's causing your cloudy or foggy vision, you'll want to get to the bottom of it fast. In this guide, you'll learn about cloudy vision causes, common symptoms, and how to get help.
What is cloudy vision?
Cloudy vision' is a general term that people use to describe a change in their eyesight (you might also hear it called 'milky eye' or 'smoky vision'). It's a common symptom of several different eye and health conditions in Australia.
When you have cloudy vision, it can feel like you're looking through a piece of scratched up glass, making the world around you appear dull. Colours often seem faded when you have cloudy vision, a bit like an overexposed photo. You might also notice 'halos' appearing around lights.
Cloudy Vision vs Blurred Vision
People sometimes confuse cloudy vision and blurred vision. While they have some similarities, there are some important differences too.
With blurry vision, things appear less sharp, clear and defined. Hard lines may appear soft, and things seem out of focus. However, if you squint, you might notice objects become temporarily sharper. While things look less clear, colours remain the same. Blurry vision often comes on more slowly (sometimes over a few years) and usually affects both eyes.
With cloudy vision, the world appears misty or foggy, and colours often appear faded. Unlike with blurred vision, squinting doesn't make things look sharper. People may experience sudden cloudy vision, or cloudy vision that comes and goes. You may only get foggy vision in one eye, but it can also affect both.
Common symptoms of cloudy eyesight
Cloudy vision can be caused by a number of conditions. The combination of symptoms will be different depending on the underlying cause, but may include:
Appearance of halos around lights
Impaired nighttime vision
Headaches
Zig‑zag patterns
Cloudy vision is normally painless.
What does your cloudy vision look like?
Cloudy vision can affect your vision in different ways. Here are some examples:
Foggy vision in one eye or both eyes
Your entire field of vision from one or both eyes appears faded, cloudy or misty. Colours are muted and the world appears to be in a fog.
One part of your vision appears cloudy
While most of your field of vision is normal, one specific area appears cloudy or foggy. It can look a bit like a smudge on a pair of sunglasses.
Peripheral vision is cloudy
Your peripheral vision appears cloudy, but the main field remains normal. It might feel a bit like you're looking through a tube.
A curtain, mist or veil 'sliding' across
You notice sudden cloudy vision that seems to slide across your eye.
Can cloudy or hazy eyesight be a sign of something serious?
Yes, it can be ‑ some causes of cloudy vision require urgent medical attention, so you shouldn't ignore foggy vision in one eye or both eyes. While most kinds of cloudy vision are not medical emergencies, it’s always best to be cautious and get it checked out by an optometrist, or a GP.
If your cloudy vision is accompanied by pain, vomiting, nausea, numbness or generally not feeling right, seek emergency care.
Retinal vein occlusion
Sometimes known as an ‘eye stroke’, this is when a blockage in eye blood vessels causes fluid to accumulate in the eye and prevents blood flowing to the tissues that help with sight. If left untreated, it may lead to permanent loss of sight. One study estimated that just under 1% of Australians get retinal vein occlusion each year, and it's more common the older you are.
Retinal detachment
The retina is a thin layer of tissue at the back of your eye that helps with sight. A detaching retina needs to be treated urgently as it can lead to vision loss. AIWH data shows about 7,000 Australians are hospitalised with a detached retina each year.
Although cloudy vision isn’t always a sign of serious problems, it’s really worth getting it checked up by a doctor or eye specialist. That can put your mind at rest and help get to the bottom of the issue.
Why is your vision cloudy?
There are a few conditions that can give you cloudy vision in one eye or both eyes. We'd always recommend booking an appointment with your GP or speaking to an eye doctor to get to the bottom of it. Remember, eye tests are bulk billed to Medicare*, so there are no out of pocket expenses to you for getting your cloudy vision checked out.
Cataracts
This is when the lens inside your eye starts to become cloudy. Some 411,000 Australians have cataracts according to AIHW, and it's more common among older people (about 10% of over 65's have cataracts).
Infections and inflammation
Infections may cause changes or damage to the cornea, which is the clear bit at the front of your eye. There are a few possible causes of eye infection, including conjunctivitis.
Migraines
If you suffer from migraines, you may experience an aura before or during the migraine (sometimes known as ocular migraines). This can cause cloudiness in a certain part of your field of vision (as well as zig zags or flashes that might look a bit like lightning).
Macular degeneration
About a quarter of a million Australians have macular degeneration, according to AIWH. The macula is the part of the eye that controls sharp vision. As you get older, the macula can become damaged, and this can cause milky central vision.
Diabetes
This common condition can damage blood vessels in your eye (a complication known as diabetic retinopathy). This may cause cloudy vision.
Low blood sugar (hypoglycaemia)
If you have low blood sugar (this is particularly an issue for people with diabetes), your vision may appear cloudy.
Fuchs’ Dystrophy
This is a rare inherited condition which affects the cornea (the part of the eye that lets light in) and typically begins in middle age. An early sign of Fuchs’ Dystrophy is cloudy vision in the morning which improves over the course of the day.
Eye trauma
Scratches or shocks to your eye could make your vision cloudy.
Listed on a valid Medicare card without Optometry restrictions.
Getting help for foggy vision in one eye or both
If you notice you are having cloudy, misty or smoky vision, we'd really recommend getting an eye check‑up as soon as you can. Cloudy or foggy vision can be a symptom of a few different eye conditions ‑ as well as other general health problems. Although most of the causes of cloudy vision aren't medical emergencies, some of them can be. So, it's best not to ignore any visual changes you have.
If you notice you have cloudy vision, our optometrists will choose from a few different tests and checks to find out what's causing the issue:
OCT scan
Creates detailed images of the inside of your eye.
Learn more about OCT Scans
Visual acuity test
Also known as a Snellen test. You'll be asked to read letters on a chart from a distance.
A slit‑lamp examination
Examines the inside of your eye, including the lens and retina.
Learn more about slit‑lamp examination
Tonometry
Measures the pressure of fluid inside the eye.
Ophthalmoscopy
Helps the optometrist examine your retina.
Book an eye testWhat the experts say about cloudy vision
Our expert optometrists see people with cloudy vision every day. Here, one of our optometrists shares what to look out for, what happens during an eye test, and how they support people with cloudy vision.
Book an eye testTreatment options for cloudy vision
After testing your eyes, your optometrist will suggest treatments based on the underlying cause. Here are some of the possible treatments for some of the most common causes of cloudy vision:
Cataracts
Cataracts are usually treated with surgery, where the cloudy lens is replaced with a clear artificial lens
Learn more about cataracts
Diabetic retinopathy
Diabetic retinopathy is usually treated by trying to help you manage your diabetes more generally
Learn more about diabetic retinopathy
Macular degeneration
Macular degeneration may be treated using injections that slow down blood vessel growth
Learn more about macular degeneration
Dry eyes
Dry eyes are often treated with eyedrops
Learn more about dry eyes
Other causes of cloudy vision may require different kinds of treatment.
Common questions about cloudy vision
There are a few possible reasons why you might get cloudy or foggy vision in one eye. Common causes include cataracts, eye infections, migraine, or more serious issues like retinal detachment. Book an appointment with your GP or optometrist to get to the bottom of the issue.
It might do. Some kinds of cloudy vision may be temporary issues ‑ such as scratches to the cornea, which can clear up on their own. If you get clouds in eyesight from migraines, these will also go away when the migraine passes. But other kinds of cloudy vision won't go away by themselves, and may get worse if not treated.
Getting sudden cloudy vision in both eyes can be really alarming. There are a few possible causes, including less urgent issues like migraine, cataracts, or eye infections, through to more serious issues like retinal detachment or 'eye stroke', among others. Book an appointment with your optometrist or call 000 for emergency help.
If you've noticed foggy vision in one eye today, there might be a few possible causes. Foggy or hazy eyesight might be a symptom of ocular migraine, eye trauma, a scratched cornea or, more seriously, something like a detaching retina. We'd really recommend calling your GP or booking an appointment with an optometrist to get to the bottom of it.
An eye stroke is another name for retinal vein occlusion or retinal artery occlusion. It's when there's a blockage in eye blood vessels which prevents blood flowing to the tissues that help with sight. If it's not treated, it can cause permanent damage to your sight, so it's vital to get to the ED as soon as possible. One common symptom of an eye stroke is your eye clouding over.
If you have cloudy vision, it's best to get it checked by an optometrist, an eye doctor or your GP. There are quite a few different causes of cloudy vision, and they each have different treatments. Once they've done an eye scan, your optician will help you work out a treatment plan.
Did you know?
Eye tests are bulk billed to Medicare, so there are no out‑of‑pocket expenses for you*.
Briceno‑Lopez, C., Neus Burguera‑Giménez, Mari Carmen García‑Domene, et al. (2023) Corneal Edema after Cataract Surgery. Journal of Clinical Medicine, [online] 12(21), pp.6751–6751. Available at: https://doi.org/10.3390/jcm12216751
Raghad Babaker, Lama Alzimami, Ameer, A.A., Majed Almutairi, et al. (2025) Risk factors for age‑related macular degeneration: Updated systematic review and meta‑analysis. Medicine, [online] 104(8), pp.e41599–e41599. Available at: https://doi.org/10.1097/md.0000000000041599
The International Agency for the Prevention of Blindness. (2022) lobal prevalence of age‑related macular degeneration and disease burden projection for 2020 and 2040: a systematic review and meta‑analysis ‑ The International Agency for the Prevention of Blindness. Available at: https://www.iapb.org/learn/resources/global‑prevalence‑of‑age‑related‑macular‑degeneration‑and‑disease‑burden‑projection‑for‑2020‑and‑2040‑a‑systematic‑review‑and‑meta‑analysis/
NHS (2020) Age‑related Cataracts. [online] NHS. Available at: https://www.nhs.uk/conditions/cataracts/
(2023) Cataracts. [online] Nih.gov. Available at: https://www.nei.nih.gov/learn‑about‑eye‑health/eye‑conditions‑and‑diseases/cataracts
Australian Institute of Health and Welfare (2021) Eye health, How common is visual impairment? Available at: https://www.aihw.gov.au/reports/eye‑health/eye‑health/contents/new
Could it be something else?
There are several eye conditions that might look like cloudy vision, or which have similar symptoms.
Things appear out of focus? Blurred vision can be caused by many different issues.
Do your eyes feel sore, tried or gritty? Dry eye could be the cause, making vision cloudy, or as if you have filmy eyes.
Cataracts are a very common eye condition, particularly among older people. Cataracts can give you hazy eyesight.
Glaucoma refers to a group of eye diseases which can cause pressure to build up in the eye and cause damage to the optic nerve. Some kinds of glaucoma may cause poor peripheral vision or sensitivity to light.
This rare condition makes your cornea bulge and get thinner, and can lead to visual distortions and misty vision.
Iritis is when your iris becomes inflamed. It can cause blurred vision and sensitivity to light.
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