A nighttime drive quickly becomes stressful. Streetlights start to look like glowing rings, headlights get blurry, and everything feels less sharp. Halos around lights are unpleasant and can impact safety. Most of the time, it is not serious, but it can be an early warning of a problem. Here you will learn what might cause this symptom, when to visit a doctor in North Fulton, and what tests to expect. The exact cause can only be confirmed with an eye exam.
What Are Halos Around Lights and How Do They Feel
Halos appear when light is scattered by the eye’s structures. The cornea, lens, and tear film should be smooth and clear. If the surface is irregular or there is clouding, light does not focus correctly. This creates rings, streaks, or a foggy glow around lights. It is usually more noticeable at night. The effect can range from slight irritation to reduced clarity that affects driving.
Top eye conditions that can cause halos
- Cataracts. The lens turns cloudy. Low-light vision declines, and lights look streaked.
- Dry eye. The tear film breaks up. Symptoms vary and may include burning.
- Refractive issues and astigmatism. Blurry sight and shadowed outlines at any distance.
- After vision correction surgery. Healing after LASIK may include temporary halos.
- Glaucoma or retina-related conditions. Often come with discomfort, rainbow circles, and a narrowed visual field.
When Seeing Halos Requires Immediate Medical Attention
Contact a doctor immediately if you have any of these symptoms: sudden changes, severe pain, quick loss of vision, a shadow or “curtain,” flashes, or a noticeable increase in floaters. These may indicate urgent eye conditions. If symptoms worsen over time, do not put off an eye exam. Your vision is not something to ignore.
How Doctors Diagnose the Cause of Halos Today
At the visit, the doctor will start with a brief conversation. It matters when and under what conditions the halos appear. Next comes a basic vision test and refraction measurement. A slit lamp exam is used to evaluate the cornea and lens. Intraocular pressure is checked to rule out glaucoma. Ophthalmoscopy or dilated imaging provides a view of the retina.
If needed, OCT is added for a detailed assessment of the macula and optic nerve or corneal topography if post-LASIK changes or keratoconus are suspected. At North Fulton Eye Center, these tests are available and help distinguish between similar conditions. This saves time and reduces the risk of choosing the wrong treatment.
How Treatment Targets the Cause of Halos
Management depends on what is causing the halos.
- Corrective lenses can fix refractive issues and reduce light scatter.
- Moisturizing drops are used to treat dry eye and improve tear stability.
- Glaucoma care focuses on lowering pressure and protecting vision.
- In cataract cases, the natural lens may be replaced with an intraocular lens.
- Temporary halos are possible after surgery, but they usually decrease.
Until symptoms improve, it is best to limit night driving. Simple, but practical.
Key Takeaways and Your Next Move
Halos can range from a simple vision issue to an early warning of something more serious. It’s not something you want to brush off, especially when driving becomes harder. Schedule a vision check at North Fulton Eye Center to understand the cause and next steps. The clinic cares for patients in Roswell, Cumming, and the nearby Northside and Forsyth areas. You can call or book online via North Fulton Eye Center.
If you want a quick consultation first, speak with an ophthalmologist in Roswell. Sometimes a simple exam brings back the clarity you need to feel safe at night.
