Prediction of SMILE surgical cutting formula based on back propagation neural network.

Aim: To predict cutting formula of small incision lenticule extraction (SMILE) surgery and assist clinicians in identifying candidates by deep learning of back propagation (BP) neural network.

Methods: A prediction program was developed by a BP neural network. There were 13 188 pieces of data selected as training validation.

Phacoemulsification combined with transpupillary removal of silicone oil and intracapsular intraocular lens implantation.

Aim: To estimate the effectiveness of phacoemulsification and foldable intraocular lens (IOL) implantation combined with transpupillary silicone oil removal.

Methods: There were 168 eyes of 168 candidate patients with cataract and silicone oil-filled eyes recruited in our study. All of the patients received the intraocular silicone oil removal surgery by transpupillary drainage and cataract extraction by phacoemulsification.

[Experimental Investigation on the Electron Temperature of Laser-Induced Mg Plasmas].

A series of plasma characteristic spectral lines of Mg alloy were obtained under nanosecond laser shock produced by a pulsed Nd : YAG laser (1 064 nm, maximum energy 500 mJ), which was taken under standard atmospheric pressure and at room temperature. Results indicated that the evolutionary rates of spectral lines were different, and the laser energy was enough to ionization Mg alloy under this experimental condition by the spectral lines of MgⅠ, MgⅡ. The electron temperature of Mg plasma were calculated by the measured relative Emission-line intensity(MgⅠ383.

Suppression of experimental choroidal neovascularization by curcumin in mice.

Purpose: To investigate the effects of curcumin on the development of experimental choroidal neovascularization (CNV) with underlying cellular and molecular mechanisms.

Methods: C57BL/6N mice were pretreated with intraperitoneal injections of curcumin daily for 3 days prior to laser-induced CNV, and the drug treatments were continued until the end of the study. The CNV area was analyzed by fluorescein-labeled dextran angiography of retinal pigment epithelium (RPE)-choroid flat mounts on day 7 and 14, and CNV leakage was evaluated by fluorescein angiography (FA) on day 14 after laser photocoagulation.

[Micro- and nano-structures on metal induced by femtosecond laser radiation].

In the present study the authors performed surface treatment of stainless steel 65Mn (the thickness is 60 microm) by femtosecond laser (pulse duration 148 fs, wavelength 775 nm). The single-pulse threshold could be obtained directly to be about 0. 2 J x cm(-2).

[Micromachining of Au film by femtosecond pulse laser].

Femtosecond laser micromachining of film is an emerging technology for fabrication of MEMS devices. A Ti: sapphire laser (130 fs, 1000 Hz)was used to irradiate the thin film with variations in process parameters such as pulse energy. The film thickness is about 4 microm which was measured by AFM.

[Application of laser induced breakdown spectroscopy (LIBS) to microdetection of Au film machining].

Film micro-machining is a core in micro- and nano- technology, micro-electro-mechanical systems and photoelectron field. However, it is difficult to control the quality of machining in processing film. In the present paper the authors propose a method to solve this problem by using laser induced breakdown spectroscopy (LIBS).

[The theory and the influential factors of laser induced breakdown spectroscopy].

The laser-induced breakdown spectroscopy (LIBS) technique, due to its lack of pretreatment of the material and the speed of analysis, has shown a great potential for a wide range of industrial applications. The current situation of application and study of LIBS are reviewed. Meanwhile, the laser used to explode the Cr and Co film had a pulse duration of 10 ns, the highest single pulse energy was 50 mJ at a repetition rate of 20 Hz, and a wavelength of 1064 nm.