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At least 19 recordsLinked to original sources
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Vaginal and cervical cytologic changes following laser treatment.

Carbon dioxide laser treatment is a very effective mode of removal of small fragments of tissue from the cervix which causes minimal bleeding and trauma and is followed by rapid healing. Biopsy sections and particularly cytologic preparations obtained from the areas of laser action indicate that squamous and columnar epithelial cells and possibly fibrocytes in the underlying connective tissue are altered, appearing coagulated and elongated similar to cells which have been removed from an area of electrocautery.

Adult↗
PubMed1978

Argon laser treatment of cutaneous vascular abnormalities: progress report.

One hundred six cutaneous vascular abnormalities were treated over a 3-year period by the argon laser. Absorption of light energy causes heat coagulation of the hemangioma with sparing of the overlying skin and secondary skin appendages. Patients with port wine hemangiomas, capillary/cavernous hemangiomas, and telangiectasia showed good response to argon laser treatment. Superficial varicosities of the lower extremity proved to be relatively insensitive to laser treatment. The argon laser shows promise as an effective clinical tool in the treatment of hemangiomas; however, further clinical and laboratory investigation will be necessary to establish the laser as the modality of choice in the treatment of such lesions.

Adult↗
PubMed1977

[Regression of corneal neovascularization by laser treatment? (author's transl)].

The corneal neovascularization produced by NaOH burns was examined in two groups of pigmented rabbits following laser treatment. The treatment was carried out with energy level 500 mW, spot diameter 200 micron, and exposure time 1 s throughout. In the first group, a single newly formed vessel was coagulated in each case. Subsequent fluorescein angiography invariably showed an incomplete occlusion of the vessel. In the second group, we coagulated a section of the neovascularization network at its origin in the corneal limbus. After 48 h, fluorescein perfusion was once again observed, but the vessels were predominantly finer than before. Fluorescence microscopy revealed a rich neovascularization of the more superficial layers of the corneal stroma. To be successful, laser treatment must involve both supplying and draining vessels.

Animals↗
PubMed1978

[Transurethral laser treatment in bladder neoplasms].

Within one year 38 patients with bladder tumors--most malignant--were treated by argon-laserbeam (6 Watt and 15 Watt). We now survey altogether 45 endoscopic operations. To bring the laserbeam into the waterfilled bladder, we use a special light-conductor and a normal operation-cystoscope. Laser therapy takes place after conventional electro-resection (TUR) by coagulation of the tumor ground or independently by destroying small relapses of tumors. We have observed some advantages of argon-laser treatment compared to electro-surgery: 1. No convulsions of bladder muscle with the danger of perforation, sometimes produced by current impulses. 2. Painlessness. Laser treatment is possible without anesthesia. 3. More therapeutic range. 4. Cases of absence of recidivation. We hope that the new therapy will be able to reduce the recidivation of bladder tumors and to improve the poor results of operative treatment.

Electrosurgery↗
PubMed1978

Laser treatment in maculopathy of pseudoxanthoma elasticum.

We report a case of Pseudoxanthoma Elasticum with exudative retinopathy which was treated with the Argon laser and in which the visual acuity was preserved and the subretinal neovascular membrane obliterated for ten months. Laser treatment seems to have helped this case although the same treatment has stimulated the development of subretinal neovascular membranes. These cases must be treated cautiously.

Adult↗
PubMed1979

Argon laser treatment of decorative tattoos.

The argon laser shows promise as an effective clinical method for the treatment of tattoos. Although clinical follow-up has been limited to 3 years and less in a series of 30 patients, the preliminary results are sufficiently optimistic to recommend further clinical use of the argon laser for such treatment.

Adult↗
PubMed1976

[Laser-treatment of the anterior segment of the eye with the new glaucoma research laser (author's transl)].

The possibilities for treatment of the anterior segment of the eye with the new glaucoma research laser, model 152, constructed by Britt-Corp. are reported on, along with the possibilities of vasodesolation, pupilplastics, iridontomies and iridectomies. Especially mentioned is the technic and possibility of laser-trabeculopuncture. This laser archieves remarkable success also in open-angle glaucoma and closed-angle glaucoma provided the technic is suitable. It is shown that all operations can be carried out by an ambulant patients and practicly without any complications. There are no problems during the aftertreatment for the doctor or for the patient.

Anterior Chamber↗
PubMed1977

Laser treatment of cervical and vaginal neoplasia.

The conservative management of cervical intraepithelial neoplasia (with electrodiathermocautery and cryosurgery) is unsuitable for the treatment of similar vaginal lesions because of complications of scarring, stenosis, and fistulas. A new modality of treatment with the use of a carbon dioxide laser beam was evaluated for the treatment of cervical and vaginal intraepithelial neoplasia. Histopathologic examination of cervical tissue after laser beam therapy showed that most of the tissue destruction resulted from evaporation of tissue and that the zone of tissue necrosis was much less than after cryosurgery or electrocautery. Laser therapy was used in 50 patients, 46 of whom had varying degrees of cervical and vaginal intraepithelial neoplasia. Treatment failures occurred in five patients (10 per cent). The experience of this study suggests that the major value of laser treatment of the lower genital tract will be in the management of vaginal intraepithelial lesions, while similar results in the treatment of cervical neoplasia may be achieved by much simpler methods.

Carbon Dioxide↗
PubMed1977

Argon laser treatment in supine position.

When using an argon laser photocoagulator it is often advantageous and sometimes indispensable to treat the patient in a supine position. Stabilization of the laser beam requires the use of a microscope equipped with a beam manipulator (joystick) that maintains the orientation of the laser beam wherever it is placed, without the operator having to hold the joystick. A low-vacuum contact lens or a three-mirror lens, and a microscope suspended from a floor stand are used. The patient is placed in the supine position on a stretcher of adjustable height with his head in a foam rubber conformer. Local anesthesia may not be necessary, but if indicated, the patient should not be treated in an upright position. A lid block is rarely required. General anesthesia is used with patients who cannot cooperate. There are 4 main indications for treatment in the supine position: (1) cases in which great accuracy is needed, such as treatment near the macula; (2) all cases in which retrobulbar anesthesia is necessary, with or without a lid block; (3) cases in which the patient is unable to cooperate; and (4) cases that require prolonged photocoagulation.

Adult↗
PubMed1979

Single treatment laser iridotomy.

A technique is described for producing an iridotomy in the treatment of closed-angle and secondary glaucoma using a single pulse from a dye laser. It was successful in 28 out of 32 eyes treated, and no significant complications were encountered.

Coumarins↗
PubMed1978

Carbon dioxide laser treatment of dermatologic lesions.

Each of the four general classes of laser (gas, solid, liquid, and semiconductor) emits a particular wavelength of light. This beam of light can be focused to a minutely accurate diameter and the depth of penetration can be controlled by the power input. Thus, there is minimal damage to surrounding tissue. A carbon dioxide laser was used to treat congenital hemangioma, verruca vulgaris, and condyloma acuminatum, and to remove tattoos. Of the four types of lesions treated, verruca vulgaris, condyloma acuminatum, and tattoos responded best.

Carbon Dioxide↗
PubMed1976

Observation of injected fluorescein diffusion after laser treatment of cat fundi. An experimental study with angiography and microscopy.

Argon laser coagulations with a power of 100 mW and 300 mW, exposure time 0.02 and 0.02 sec, and constant spot size of 100 microns were applied on normal cat fundi. From 1 and 2 hrs to 7 days after the coagulation, the treated eyes were observed angiographically and by fluorescence microscopy after dye injection; freeze dried eyes were examined under a fluorescence microscope. Abnormal dye leakages originated from the chorid and from retinal vessels were detected in the specimens examined within 72 hrs after the coagulation.

Animals↗
PubMed1977

[Basic data in the application of a new intensity distribution in laser treatment of the upper digestive tract].

A new pattern of intensity distribution of laser beam, in the shape of a "topfkuchen" was found to be satisfactory in avoiding perforation when applied to the gastrointestinal tract. Basic data of the optical and thermophysical properties of the different layers in the stomach of pigs were obtained. Using our distribution pattern of intensity we could see a uniform, superficial zone of coagulation. There were no perforations even after the intact mucosa of the stomach was irradiated by 175 Watts for 2 seconds.

Animals↗