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Biomedical subjects

N Ducrey

Publications and source records attributed to N Ducrey.

17 recordsLinked to original sources
PubMed1992

[Treatment of exterior extension of choroid melanomas by accelerated proton beams].

Among the 934 patients with a choroidal melanoma treated in first intention with an accelerated proton beam since 1984, 41 (4.4%) presented an extrascleral extension, of which 11 were located anteriorly and 30 posteriorly. For these 30 cases, the diagnosis was made by B ultrasonography only when the volume of the extension was important, between 20 and 2280 mm3. The Cox model multi-variant analysis was used to study the statistically significant parameters in the development of an extrascleral extension. It appears that the maximal diameter of the intraocular tumor (p = 0.0012), the localisation of the anterior margin (p = 0.0304) and the age of the patients (p = 0.0097) are statistically meaningful. The 4 years' survival, studied with the Kaplan-Meier curves, is estimated at 60% for the patients with extrascleral extension and at 85% for the patients without. These results are similar to those of literature, whatever treatment is chosen (enucleation and radiotherapy, exenteration).

Adult↗
PubMed1992

[An approach to diabetic retinopathy].

Presentation of ophthalmological taking in charge program of the diabetic patients, program elaborated during a symposium in London under the supervision of the World's Health Organisation and the International Federation of Diabetes. A calendar of the necessary controls is worked out. A scheme of the proposed treatment is decided. This program has to be known and followed by the patients, the general doctors and Swiss ophthalmologists.

Diabetic Retinopathy↗
PubMed1991

[Diabetic retinopathy: a new challenge of the year 2000].

New programs for the prevention of blindness caused by diabetic retinopathy have been elaborated in different countries. The author analyses the results of a survey conducted in Switzerland in 5 University Ophthalmology clinics and in 9 regional centres, reviewing the ocular examinations and treatments applied to diabetic patients. A common attitude towards this disease is suggested.

Blindness↗
PubMed1977

Clinical trials with the Equator-Plus camera.

The Equator-Plus camera can photograph a 148-degree view of the fundus, measured from the nodal point of the eye. We tested this instrument clinically more than 800 times on over 700 eyes. The large field, which is three to four times that of any conventional fundus camera, is achieved by using a special contact lens as the front element in the camera optics. Photographs taken with the Equator-Plus camera can resolve a lesion as small as one-eighth of a disk diameter, if the contrast is good. Protruding tumors, choroidal or retinal detachment, and extensive disease of the choroid and fundus show up well with this technique. We obtained good pictures in 87% of the clinical tests. We have not observed complications of any kind after photography with the Equator-Plus camera.

Adolescent↗
PubMed1977

[Is angiodiathermocoagulation an outmoded operation?].

Following a short summary of the anatomical and physiological aspects of the surgical procedure, the authors present a series of 320 eyes operated upon by the method of angiodiathermocoagulation. Open-angle glaucoma, followed by aphakic glaucoma, respond the best to this procedure, the expected number of good results being approximately 25% where the criteria are severe. The low percentage of severe complications represents one of the greatest advantages of angiodiathermocoagulation, which may be recommended in desperate cases.

Adolescent↗
PubMed1976

[Simple repairs for loss of eyelid substance (author's transl)].

The authors present the simple technics of eye lid repair. The loss of skin and possibly of M. orbicularis oculi, is differentiated from that of the complete thickness of the eye-lid. The first can be treated by free Thiersch or Wolfe-Krause-split-skin graft or full thickness skin grafts, the second by direct suture or by various local advancement flaps according to the "quarter" rule of Mustardé.

Eyelid Diseases↗
PubMed1976

[Complex repairs for loss of eyelid substance (author's transl)].

The repair of large defects of the lid region may require complex reconstruction using skin, tarsus and conjunctival grafts or flaps. The authors have classified the lesions in three groups: inner canthus, lower lid and upper lid. For each group, the more applicable technics are described.

Cartilage↗