Journal of Otolaryngology and Ophthalmology of Shandong University ›› 2025, Vol. 39 ›› Issue (1): 152-161.doi: 10.6040/j.issn.1673-3770.0.2023.176

• Review • Previous Articles    

Advancements in understanding how small incision lenticule extraction impacts ocular high order aberrations

DU Yifan1, QI Linsong2, LI Ying1   

  1. 1. Department of Ophthalmology, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China2. Department of Ophthalmology, Air Force Medical Center, Beijing 100142, China
  • Published:2025-01-17

Abstract: Small incision lenticule extraction(SMILE)is a prominent corneal refractive surgery method for addressing myopia. It employs femtosecond laser technology to create a lenticle within the cornea, which is then removed through small incisions around the cornea. This procedure has gained popularity in clinical practice due to its notable advantages including precision, safety, predictability, and swift recovery times. However, post-SMILE surgery, some patients experience visual symptoms like reduced nighttime vision, glare, halos, and starbursts, attributed to high order aberrations(HOAs), which affect the visual quality of the patients. This review examines the impact of SMILE surgery on HOAs and observes that while SMILE does introduce HOAs, it tends to minimize the induction of postoperative HOAs compared to certain other refractive surgery techniques. Notably, it significantly reduces total HOAs and spherical aberrations and, in some cases, even shows no significant difference when compared to personalized treatments guided by wavefront aberrations. Several factors influence the extent of post-SMILE HOAs, including the degree of preoperative myopia and astigmatism, corneal cap thickness during surgery, laser energy, concentration, and choice of positioning methods. However, further research is required to delve into the mechanisms behind various HOAs and their relationship with SMILE surgery.

Key words: High order aberration, Myopia, Small incision lenticule extraction

CLC Number: 

  • R778
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