Biomedical subjects
E Landolt
Publications and source records attributed to E Landolt.
A contribution to the histological and topographical anatomy of the aponeurosis of the levator palpebrae superioris and of the tarsal muscle in the normal lid and in blepharoptosis.
Eight normal upper lids were examinated histologically with special regard to the aponeurosis of the levator and of the tarsal muscle (Müller's). The aponeurosis originates from the levator muscle within the orbit (behind the septum orbitale) and inserts at the upper anterior surface of the tarsal plate. The tarsal muscle originates from the levator muscle and inserts at the upper tarsal border. It is a smooth muscle containing many small blood vessels. Fifty-six specimens of tissue resected in operations for blepharoptosis were examined histologically. They consist of parts of the tarsal muscle and of the aponeurosis of the levator and of fat tissue without pathological changes.
[Incomplete central vein occlusion. A clinicopathologic case report].
A 71-year-old patient died 4 weeks after the occurrence of incomplete occlusion of the central retinal vein. Histology of the two bulbi was compared with the photographic and fluorescenceangiographic findings of the fundus. Histologic evaluation showed that the occlusion had been caused by a thickening of the vein wall due to proliferation of fibrocytes and histiocytes just behind the lamina cribrosa. There were no signs of phlebitis or thrombosis.
[Ulcerative herpetic keratitis. Clinical and pathological findings and prognosis of the graft].
Between 1971 and 1982 33 corneae were excised for therapeutic keratoplasty because of ulcerative herpetic keratitis. The histologic findings and the clinical course enabled distinction of a nonreactive form with a rather good prognosis for keratoplasty (62% clear grafts) and an inflammatory form with bad prognosis (20% clear grafts) because of many herpetic recurrences. Perforating keratoplasty and first interventions in particular did better than lamellar keratoplasty or retransplantation. Existence of preoperative corneal vascularization compromised the prognosis of the graft. Preoperative perforation of the ulcer occurred rather often in nonvascularized corneae without compromising the prognosis of the graft.
[Conjunctivitis lignosa].
A 57-year-old woman patient presented with a pseudo-membranous necrotizing conjunctivitis. The biopsy exhibited histological changes typical for conjunctivitis lignosa with definite vasculitis, vascular occlusions and vascular necrosis. The clinical course was typical for conjunctivitis lignosa. The histological findings would suggest a circumscribed conjunctival vasculitis underlying the conjunctivitis lignosa.
[Juvenile nevoxanthogranuloma of the iris].
Juvenile Xanthogranuloma of the iris is a rare but benign disease of infants. The iris is swollen and of yellowish color, there are exsudates in the anterior chamber and occasionally spontaneous hyphema may occur. Secondary glaucoma with edema of the corneal epithelium and hydrophthalmus are often seen. Treatment consists in topical application of steroids, sometimes combined with pressure-lowering medication.
[An epidemic of pseudomonas keratitis due to permanent-wear contact lenses (author's transl)].
In 1977 thirty-three patients (35 eyes) with permanent-wear contact lenses presented with keratitis in varying degrees of severity. Among the nine cases investigated bacteriologically (including some contact lenses) three showed no organisms, while six were found to have pseudomonas aeruginosa. The contact lenses all came from the same optician, where shortly beforehand the patients had had their lenses either replaced or checked. The inspection of the optical establishment revealed faultless application of steril technique. Nevertheless it must be assumed that contamination of the lenses had had occurred there.
[The role of bulb echography in the diagnosis of malignant melanoma of the choroid (author's transl)].
The combined A- and B-scan echography reliably separates intraocular melanoma from other intraocular lesion. This is showed by the analysis of 79 cases with clinically certain or possible melanoma during the last three years. In all 33 enucleated eyes the histology proved the echographic diagnosis of melanoma to be correct.
[Dyskeratosis of the corneal epithelium (author's transl)].
Three patients presented an unilateral whitish cloudiness of the corneal epithelium which reduced the vision considerably. In two cases, radiotherapy was carried out previously (because of pterygium and because of teleangiectasia of the conjunctiva). In the eye of one patient, a superficial corneal lesion developed during general anesthesia. The corneal epithelium was scraped off in all cases, but the opacities reappeared. Histologically, the epithelium showed dyskeratosis with signs of malignancy. --7 illustrations (3 sketches of the corneas, 4 histological photographs).
[Biocompatibility of bioactive glass-ceramic in cornea and conjunctiva].
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[A new iris double-forceps in the cryoextraction of cataract (author's transl)].
In the cryoextraction of a cataract associated with severe hypotension and narrow pupil, a new smooth iris double-forceps has been found useful for the grasping of the iris and the dilatation of the pupil. Thus, it will be possible to obtain a round pupil even in these rare cases.
Light and electron microscopy in absolute glaucoma with pigment dispersion phenomena and contusion angle deformity.
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[Mycotic panophthalmitis following retinal surgery].
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[Papulose atrophiante maligne Degos].
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Diktyoma, a clinical histological and electron-microscopical observation.
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