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Nighttime Symptoms After Monocular SMILE: A Contralateral Eye Study.

Wuxiao Zhao1,2,3,4, Tian Han1,2,3,4, Meiyan Li1,2,3,4

  • 1Eye Institute and Department of Ophthalmology and Optometry, Eye & ENT Hospital of Fudan University, No.19 Baoqing Road, Shanghai, 200031, China.

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|September 24, 2021
PubMed
Summary

Small incision lenticule extraction (SMILE) surgery effectively resolves nighttime visual symptoms in patients with myopic anisometropia. Post-surgery, halo size and contrast sensitivity remain comparable to unoperated eyes, with minimal residual night vision disturbances.

Keywords:
Contrast sensitivityDisk halo sizeNighttime symptomSmall incision lenticule extraction

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Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Corneal Surgery

Background:

  • Myopic anisometropia presents challenges for visual quality.
  • Small incision lenticule extraction (SMILE) is a refractive surgery option.
  • Investigating nighttime visual disturbances after monocular SMILE is crucial for patient outcomes.

Purpose of the Study:

  • To evaluate nighttime symptoms following monocular SMILE in patients with myopic anisometropia.
  • To compare visual parameters such as halo radius and contrast sensitivity between SMILE-treated and unoperated eyes.
  • To assess patient satisfaction after SMILE surgery.

Main Methods:

  • Thirty-six patients with myopic anisometropia underwent monocular SMILE.
  • Preoperative and postoperative visual acuity, refraction, halo radius, and contrast sensitivity were measured.
  • Nighttime symptoms and patient satisfaction were assessed at a mean follow-up of 13.9 months.

Main Results:

  • No significant difference in halo radius or contrast sensitivity was found between SMILE-treated and unoperated eyes.
  • The vast majority of patients reported no moderate or severe nighttime symptoms.
  • Mild symptoms like glare and starbursts were infrequent, and overall patient satisfaction was high (9.39/10).

Conclusions:

  • Monocular SMILE demonstrates excellent safety and efficacy for correcting myopia.
  • Nighttime visual disturbances, including halos and glare, are minimal and comparable to unoperated eyes post-SMILE.
  • SMILE surgery leads to high patient satisfaction with significant improvement in nighttime visual quality.