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Lasik Halo

Halos around light sources at night after Lasik, Bladeless Lasik, PRK, LASEK, Epi-Lasik, or RLE.

Image of light bulb with fuzzy light halo.
Lasik normal night vision


A fuzzy halo< around light sources at night is a relatively common complication of Lasik that usually resolves within the normal six-month healing process. Halos are often worse or only exist in low light environments, but can exist in daylight too. This Lasik night vision effect is caused by inconsistent vision correction across the cornea.

Night vision halos are not limited to just Lasik, but may also occur with conventional or wavefront custom Lasik, Bladeless Lasik, PRK, LASEK, Epi-Lasik, and RLE.

The symptom of Lasik halo are often related to Lasik starbursts.

Lasik Halo Causes

Dry eyes, edema (inflammation), and an incomplete treatment area can cause or exacerbate Lasik halos. In nearly all cases the cause of long-term Lasik halos relates to the size of the patient's pupil and the size of the laser treatment zone.

Detailed Lasik Halo Information

See Lasik pupil size for details about the primary cause for Lasik halos..

Looking For Best Lasik Surgeon?

If you are ready to choose a doctor to be evaluated for conventional or custom wavefront Lasik, Bladeless Lasik, PRK, or any refractive surgery procedure, we recommend you consider a doctor who has been evaluated and certified by the USAEyes nonprofit organization. Locate a USAEyes Evaluated & Certified Lasik Doctor.

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If this article did not fully answer your questions, use our free Ask Lasik Expert patient forum.

Recent Lasik Ghosting Journal Articles...

Related Articles

The role of the mesopic pupil on patient-reported outcomes in young patients with myopia 1 month after wavefront-guided LASIK.

J Refract Surg. 2014 Mar;30(3):159-65

Authors: Schallhorn S, Brown M, Venter J, Hettinger K, Hannan S

PURPOSE: To determine the relationship between low-light pupil size and patient-reported outcomes 1 month after wavefront-guided LASIK in young patients with myopia.
METHODS: Retrospective case series of 10,944 eyes of 5,563 young patients with myopia who underwent wavefront-guided LASIK (6.0-mm optical zone). Preoperative pupil size was measured under low-light conditions with an infrared pupillometer. Visual and refractive outcomes were evaluated at 1 month postoperatively. A questionnaire was administered to assess patient-reported outcomes including satisfaction with the procedure, night driving, and glare and halo visual symptoms.
RESULTS: The average patient age was 29.8 years (range: 18 to 40 years). The mean preoperative manifest spherical equivalent of -3.49 diopters (D) (range: -0.50 to -11.75 D) was reduced to -0.04 ± 0.29 D at 1 month, with 94% of eyes achieving an uncorrected distance visual acuity of 20/20 or better. The mean low-light pupil diameter was 6.6 mm (range: 4 to 9 mm) and 1,514 patients (27.2%) had a diameter of 8 mm or larger. No correlation between pupil diameter and patient-reported outcomes was found (r range: -0.02 to 0.07). Logistic regression analysis identified postoperative uncorrected distance visual acuity and postoperative manifest refraction as significant predictors of night halo complaints after wavefront-guided LASIK (P < .01).
CONCLUSIONS: In this large series of young patients with myopia treated with wavefront-guided LASIK, low-light pupil diameter was not predictive of surgery satisfaction, ability to perform activities, or visual symptoms at 1 month postoperatively. [J Refract Surg. 2014;30(3):159-165.].

PMID: 24763720 [PubMed - in process]


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