purpose: to evaluate the histopathologic features of optic neurotomy with microvitreoretinal (mvr) blade and excimer laser in cadaver eyes. method: optic neurotomy was performed in 11 cadaver eyes using 20-gauge mvr blade and in three cadaver eyes with pulsed xenon chloride (xecl) excimer laser (308 nm) via monofile light-conducting fiber with a core diameter of 200 microns. after tissue proces...

Silicon microspheres 800 nm to 10 m have been formed using an excimer laser. The method described in this paper shows that microspheres can be formed with high yield and free of contamination. Silicon microspheres enable new applications where silica microspheres fall short. Due to their semiconducting properties, new photonic devices can be developed for nano-electro-optical applications. Key...

The objective is to evaluate the effects of phototherapeutic keratectomy (PTK) in bullous keratopathy patients. Phototherapeutic keratectomy was performed in a pseudophakic patient with corneal decompensation after lens extraction, with the excimer laser Nidek EC 5000 after manual corneal epithelial debridement. There was no pain after fifteen days the laser application and during the eight mon...

We designed and synthesized a donor-acceptor-donor dye consisting of a 2,7-disubstituted fluorenone with diethylaminophenyl moieties present as strong electron donating groups. Switching between twisted intramolecular charge transfer (TICT) emission and excimer emission was achieved, with no ground state changes, by simply changing the solvent used. In a nonpolar solvent, excimer emission was o...

Pyrene is a common organic luminescent material. To improve the fluorescence properties of pyrene, we have designed a pyrene-2,7-diyl bridged macrocage in which the pyrene moiety is sterically protected by the outside alkyl chains. The macrocage shows intense fluorescence from a monomeric excited state without excimer fluorescence even in saturated solutions, although the parent pyrene shows ex...

BACKGROUND The survival and growth of melanocytes are controlled by the binding of stem cell factor to its cell surface receptor c-kit+ (CD117). We have observed that c-kit+ melanocytes existed in some lesions of vitiligo, while Melan A+ cells were absent. OBJECTIVE To verify possible relation between c-kit+ expression and treatment response in non-segmental vitiligo lesions. METHODS Skin b...

A flexible, highly sensitive sensor of oxygen in non-aqueous solvents is described. It consists of CdSe/ZnS nanoparticles decorated with a considerable number of pyrene units, thus making the formation of the pyrene excimer possible. The emission of the pyrene excimer and that of the nanoparticle are suitably separated from each other and also from the excitation wavelength. This sensor can be ...