Contact lens scalpel for intraocular surgery.
Explore the source record for details and available documents.
Biomedical subjects
Publications and source records attributed to F Ando.
Explore the source record for details and available documents.
Complicated retinal detachments in 99 eyes were successfully managed by intraocular injections of silicone oil with or without pars plana vitrectomy. The silicone was then subsequently removed after panretinal photocoagulation. Any remaining anterior vitreous cortex near the vitreous base and/or preretinal proliferative tissue causing traction of the retina was also removed by a vitrectome or extracted by a hooked needle after the silicone-fluid exchange had been performed. The preretinal proliferation occurred in some cases even after silicone oil had been removed. Recurrent detachments were discovered in 8 of the 99 eyes and were managed successfully by reinjections of the silicone. Other silicone reinjections were required in two eyes with diabetic retinopathy and two nondiabetic eyes because of frequent rebleeding into the vitreous cavity.
In order to repair an inverted retinal flap on the choroid in case of retinal detachment with giant tears, the authors have developed a retinal tack made of acetalcopolymerisate. The tack is very durable and should remain inactive in the human body, owing to its stability under conditions of heat, alkali and acid. Manipulating the tack is adequately easy; the procedure and the tacks themselves appear to be well tolerated by the eye. The detailed design of the tack and its method of use are described in this report.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Recently total body irradiation has been used as a method of preparation for the bone marrow transplantation. However, it has become apparent that total body irradiation is one of the causes of interstitial pneumonia. There are several factors in total body irradiation that may induce interstitial pneumonia. 1) Total dose. Usually 10 Gy which is used in America, reduces the survival of the leukemic cells to about 0.001% while the normal tissue cells are reduced to about 1%. However there is no evidence that 10 Gy is enough for bone marrow transplantation. 2) Dose rate. A dose of 10 Gy given at a high dose rate is about 10 times more effective than at a low dose rate. However, the dose-rate effects become less pronounced when the single dose is under 2 Gy. 3) Dose fractionation. The effect on cell survival of dose fractionation is discussed. Since the recovery from the radiation damage is usually greater in normal cells than in the malignant cells, fractionated radiation will have great advantages. 4) Dose distribution and new irradiation technique. It is difficult to obtain homogeneous distribution if a single large radiation field is used. In our hospital the patients receive total body irradiation by a moving treatment couch method under X-rays exposure. Homogeneous dose distribution is achieved with this method. Total body irradiation will become an almost routine treatment method for bone marrow transplantation with multifractionated irradiation.
Explore the source record for details and available documents.