To explore the potential factors for unintended initial dissection of the posterior plane in a large sample retrospective analysis and surgeons of different levels.
Myopia is the most common eye disease in the world. Femtosecond laser small incision lens extraction (SMILE) has increasingly become the first choice in refractive surgery due to its greater biomechanical stability, less impact on the tear film and other advantages. However, because SMILE surgery is more challenging than flap-based corneal ablative surgery, young surgeons sometimes dissect the lenticule posterior plane first in clinical practice, which will make it more difficult to extract the lenticule or even cause the retained lenticule. The purpose of this study aims to explore the potential risk factors for unintended initial dissection of the posterior plane in large samples and surgeons of different surgical volumes and different surgical habits (different angles of peripheral corneal incision) in multiple scenarios.
Study Type
OBSERVATIONAL
Enrollment
3,003
Small incision lenticule extraction surgeries performed by two Refractive surgery experts (Refractive surgery expert 1: YYF, Associate Professor with 10 years of experience as a refractive surgeon; Refractive surgery expert 2: GF, Associate Professor with 5 years of experience as a refractive surgeon) and a Attending ophthalmologist (WNY, Attending ophthalmologist with 1 year of experience as a refractive surgeon).
The Second Affiliated Hospital of Nanchang University
Nanchang, Jiangxi, China
The number of patients with unintended initial dissection of the posterior plane in the SMILE surgeries
The number of patients with unintended initial dissection of the posterior plane were observed during the SMILE surgeries.
Time frame: Day 0
The impact of spherical equivalent on the unintended initial dissection of the posterior plane (UIDPP) in SMILE surgeries
The spherical equivalent of eyes with UIDPP and eyes without UIDPP were analyzed, and statistical analysis was observed to investigate the impact of spherical equivalent on the UIDPP in SMILE surgeries.
Time frame: Day 0
The impact of peripheral corneal incision angle on the unintended initial dissection of the posterior plane (UIDPP) in SMILE surgeries
The peripheral corneal incision angle of eyes with UIDPP and eyes without UIDPP were analyzed, and statistical analysis was observed to investigate the impact of peripheral corneal incision angle on the UIDPP in SMILE surgeries.
Time frame: Day 0
The impact of peripheral lens thickness on the unintended initial dissection
The peripheral lens thickness of eyes with UIDPP and eyes without UIDPP were analyzed, and statistical analysis was observed to investigate the impact of peripheral corneal incision angle on the UIDPP in SMILE surgeries.
Time frame: Day 0
The impact of lens diameter on the unintended initial dissection
The lens diameter of eyes with UIDPP and eyes without UIDPP were analyzed, and statistical analysis was observed to investigate the impact of lens diameter on the UIDPP in SMILE surgeries.
Time frame: Day 0
The impact of central corneal thickness on the unintended initial dissection
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The central corneal thickness of eyes with UIDPP and eyes without UIDPP were analyzed, and statistical analysis was observed to investigate the impact of central corneal thickness on the UIDPP in SMILE surgeries.
Time frame: Day 0