Biomaterial Database

Contact versus noncontact diode laser transscleral cyclophotocoagulation in cadaver eyes. 1996

G A Stroman, and W C Stewart, and S Hamzavi, and T P Powers, and W D Blessing

Department of Ophthalmology Medical University of South Carolina, Charleston, USA.

OBJECTIVE The optimal placement and laser energy levels of a new contact probe with a variable focus used for transscleral diode cyclophotocoagulation were compared with the diode laser noncontact technique. METHODS Fresh cadaver eyes were evaluated by a modified posterior Miyake view using videotape, light microscopy, and scanning electron microscopy. RESULTS The noncontact diode technique at maximum energy (1.2 J) and contact diode applications at similar energy levels failed to produce obvious gross tissue ciliary body change and mild alterations by histology. Consistent gross, histologic, and scanning electron microscopic damage was noted at 3.0 J or more with the contact probe placed at the surgical limbus and defocused 0.5 to 1.5 mm posteriorly. CONCLUSIONS This study indicates that the Multilase contact diode laser causes transscleral ciliary body destruction in a cadaver eye model and may have potential clinical usefulness.

UI	MeSH Term	Description	Entries
D008028	Light Coagulation	The coagulation of tissue by an intense beam of light, including laser (LASER COAGULATION). In the eye it is used in the treatment of retinal detachments, retinal holes, aneurysms, hemorrhages, and malignant and benign neoplasms. (Dictionary of Visual Science, 3d ed)	Photocoagulation,Coagulation, Light,Coagulations, Light,Light Coagulations,Photocoagulations
D008855	Microscopy, Electron, Scanning	Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.	Scanning Electron Microscopy,Electron Scanning Microscopy,Electron Microscopies, Scanning,Electron Microscopy, Scanning,Electron Scanning Microscopies,Microscopies, Electron Scanning,Microscopies, Scanning Electron,Microscopy, Electron Scanning,Microscopy, Scanning Electron,Scanning Electron Microscopies,Scanning Microscopies, Electron,Scanning Microscopy, Electron
D011184	Postoperative Period	The period following a surgical operation.	Period, Postoperative,Periods, Postoperative,Postoperative Periods
D002102	Cadaver	A dead body, usually a human body.	Corpse,Cadavers,Corpses
D002924	Ciliary Body	A ring of tissue extending from the scleral spur to the ora serrata of the RETINA. It consists of the uveal portion and the epithelial portion. The ciliary muscle is in the uveal portion and the ciliary processes are in the epithelial portion.	Corpus Ciliare,Corpus Ciliaris,Bodies, Ciliary,Body, Ciliary,Ciliare, Corpus,Ciliares, Corpus,Ciliari, Corpus,Ciliaris, Corpus,Ciliary Bodies,Corpus Ciliares,Corpus Ciliari
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012590	Sclera	The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the CANAL OF SCHLEMM. (From Cline et al., Dictionary of Visual Science, 4th ed)	Scleral Spur,Scleral Spurs,Scleras
D053685	Laser Therapy	The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue.	Laser Knife,Laser Scalpel,Surgery, Laser,Vaporization, Laser,Laser Ablation,Laser Knives,Laser Photoablation of Tissue,Laser Surgery,Laser Tissue Ablation,Nonablative Laser Treatment,Pulsed Laser Tissue Ablation,Ablation, Laser,Ablation, Laser Tissue,Knife, Laser,Knifes, Laser,Knive, Laser,Knives, Laser,Laser Knifes,Laser Knive,Laser Scalpels,Laser Surgeries,Laser Therapies,Laser Treatment, Nonablative,Laser Treatments, Nonablative,Laser Vaporization,Nonablative Laser Treatments,Scalpel, Laser,Scalpels, Laser,Surgeries, Laser,Therapies, Laser,Therapy, Laser,Tissue Ablation, Laser