Half femtosecond surgery (full name: femtosecond laser flap excimer in situ keratomileusis, fs-lasik) is a common myopia correction surgery. Its core principle is the technology combining femtosecond laser and excimer laser. The corneal flap is made with femtosecond laser, the corneal stroma is cut with quasi molecular laser, and a concave lens is carved on the cornea. The core types covered by Mingshi ophthalmology are: standard half femtosecond, thin petal half femtosecond, personalized half femtosecond, and new personalized half femtosecond all optical plastic.

1、 Thin petal half femtosecond

Compared with the classic half femtosecond, the thin flap is thinner (90um thick corneal flap can be made, and 100-110 μ m corneal flap can be made by conventional surgery). At the same time, combined with VISX star/s4 IR excimer laser for cutting, the corneal thickness can be saved to the greatest extent, and the average 100 degrees can save 5-7um. The thin flap femtosecond realizes the aspiration of lens removal for those people with high myopia and relatively thin cornea. In particular, it has helped many students from all over the country who want to apply to schools and join the military realize their dreams.

2、 Personalized half femtosecond

Personalized half femtosecond on the basis of half femtosecond surgery, personalized corneal stromal ablation guidance is added. Beijing Mingshi ophthalmology can carry out four personalized guided surgeries, including corneal topography, wavefront aberration, corneal topography converted corneal aberration, and full photoplastic, which can be more refined on the cornea, eliminate the abnormal morphology of corneal astigmatism and irregular astigmatism, and improve the long-term visual quality after surgery.

All optical plastic surgery is a newly developed one of the four personalized half femtosecond surgeries in recent years. Up to 138000 whole eye data were collected through the whole eye biological examination equipment before surgery, and a personalized and customized precision cutting surgery scheme was designed. Using light trace tracking technology, the degree and higher-order aberrations were synchronously corrected to improve visual clarity and comfort.