Quick Overview
Halos or glare refer to seeing bright circles or rings around light sources — especially at night.
You may notice it while driving or looking at streetlights and headlights.
This happens when light entering the eye is scattered instead of focusing cleanly on the retina.
It can occur temporarily due to dryness or as a sign of underlying lens, corneal, or pressure-related eye issues.
When to Take It Seriously (Risk Level: Medium)
Mild halos after surgery or during recovery from LASIK are common and temporary.
But if halos appear suddenly, especially with pain, redness, or blurred vision, it may indicate acute glaucoma or corneal swelling — both need urgent medical attention.
Common Causes
- Cataract (clouding of the lens)
- Corneal swelling (edema) or infection
- Glaucoma (especially acute angle-closure type)
- Dry eyes causing irregular tear film
- LASIK or refractive surgery (temporary during healing)
- Contact lens overwear or poor fit
- Astigmatism or uncorrected refractive error
- Medications that dilate pupils
Associated Symptoms
- Blurred or hazy vision
- Eye pain or pressure (in glaucoma)
- Sensitivity to light (photophobia)
- Headache or nausea (if pressure-related)
- Dryness or watery eyes
- Trouble driving at night
Possible Conditions
- Cataract
- Glaucoma (acute angle closure)
- Corneal Edema
- Dry Eye Syndrome
- Post-LASIK visual phenomena
- Contact Lens Intolerance
- Early Keratoconus
Diagnostic Steps
Your eye specialist may perform:
- Slit-lamp examination to check cornea and lens clarity
- Tonometry to measure eye pressure
- Pupil dilation to inspect the lens for cataract
- Corneal topography to assess shape irregularities
- OCT or fundus exam for optic nerve and retina health
- Tear film analysis for dryness assessment
Treatment Options
Treatment depends on the cause.
- Cataract surgery to replace the cloudy lens
- Eye drops or surgery for glaucoma
- Lubricating eye drops for dryness or irritation
- Corneal therapy for swelling or inflammation
- Proper contact lens hygiene and fitting
- Anti-glare or blue-light–filter glasses for symptom relief
- Observation and follow-up if halos are mild and temporary post-surgery
Home Care / Self-Care Tips
- Avoid driving at night until vision improves
- Use artificial tears to reduce dryness
- Avoid contact lens use if eyes feel irritated
- Keep good lighting in low-light environments
- Wear UV-protected sunglasses during the day
- Follow your eye doctor’s post-surgery care instructions
9. When to See an Eye Specialist
Seek immediate help if you:
- Notice sudden halos with eye pain or headache
- See rainbow-coloured rings around lights
- Have nausea or vomiting along with eye discomfort
- Experience vision loss or severe blurring
- Recently had eye surgery or trauma and symptoms worsen
Quick treatment can prevent permanent damage and relieve discomfort.
FAQs
Q1: Are halos around lights normal?
Mild halos can occur due to dryness or temporary pupil dilation, but persistent ones need evaluation.
Q2: Do cataracts cause halos?
Yes. As the lens becomes cloudy, it scatters light and causes halos or glare.
Q3: Will LASIK halos go away?
Usually, yes. They improve as the cornea heals, typically within weeks to months.
Q4: Can eye drops reduce halos?
Lubricating or anti-glaucoma drops can help if dryness or pressure is the cause.
Q5: Is seeing rainbow halos around lights dangerous?
Yes, it can indicate acute glaucoma — a sight-threatening emergency.
Related Symptoms / Conditions
- Poor Night Vision
- Eye Pain and Pressure
- Blurry Vision
- Light Sensitivity
