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Biomedical subjects

J J Aron

Publications and source records attributed to J J Aron.

At least 37 records · Page 2Linked to original sources
PubMed1980

[Cicatricial ectropion and lamellar icthyosis (author's transl)].

The authors describe the surgical procedure employed in a case of bilateral cicatricial ectropion (superior and inferior), occurring during the course of a lamellar icthyosis. Total skin homografts should be applied before the appearance of severe corneal lésions on both eyelids, inferior and then superior. Two factors have to be emphasized: the apparent appearance of rejection of the grafts when the first dressings are made, and the progressive retraction of the homografts which requires repeated graft applications.

Ectropion↗
PubMed1980

Familial mitochondrial myopathy with cataract.

A 62-year-old female had severe progressive ophthalmoplegia associated with facial, pharyngeal and limb muscle involvement. When 40, she had undergone surgery for bilateral cataract present for about 20 years. Biopsies of skeletal muscles indicated myopathy; histochemistry and electron microscopy gave evidence of abnormal mitochondria in type I fibres. Bilateral cataract needing surgical treatment at 32 was the prominent symptom in her daughter, then with only mild facial weakness. Despite absence of ophthalmoplegia, similar pathological changes were observed in an inferior oblique muscle. The child of the former, a 10-year-old clinically healthy boy, had been surgically treated for a bilateral cataract at the age of 3. As indicated by a review of literature, cataract is not an exceptional occurrence in this particular type of ocular myopathy and therefore should be included within its multisystem associations. The same HLA haplotype (A2-B21) was found in the three patients.

Adult↗
PubMed1980

Use of the neodymium-YAG laser to open the posterior capsule after lens implant surgery: a preliminary report.

The use of a neodymium-YAG laser is described for opening the opacified posterior capsule in a pseudophakic eye. Both pigmented and nonpigmented ocular tissues were cut without causing adverse thermal effects and without opening the eye. The laser's instantaneous release of energy causes total ionization of the medium and formation of a plasma, followed by a hydrodynamic shock wave originating at the energy zone boundary. The temperature at the site of laser contact cannot exceed 2 x 10(-3) degrees C, which is not harmful to the eye. Further, this procedure requires no anesthesia and does not involve introduction of foreign material into the eye. The degree of aiming accuracy, the very small diameter of the laser beam (50 microns) and the use of selector pulses make the laser so precise that it virtually eliminates the risk of damage to the eye or the intraocular lens.

Aged↗
PubMed1979

[Hypoplasia of the optic nerve head].

Optic nerve hypoplasia is not a rare eventuality in children. This report discusses the clinical features of 10 new cases on a multiple point of view including optic canal tomography, fluorescein angiography and cat's examination. Optic nerve hypoplasia is not always accompanied by decreased visual acuity: sector fields are often identified in these cases.

Adult↗
PubMed1977

[Two cases of chondrodysplasia punctuate are reported].

The first one was a 13 months old lewish boy with typical features of the rhizometic type; clinicaly the patient demonstrated cataract, esotropia, nystagmus, malnutrition, micromelia, contracture, multiple stippled calcifications about the periphery of the cartilagenous structures of the vertebral bodies, sternum, wrists, knees, heels, ribs; and profound mental retardation, After cataract operation, the head of the optic nerve demonstrate to be narrower than usualy and white. Pathologic studies of the lens' fragments after surgery showed the cataract to be without any specific characters. The child now 2 yrs and 1/2 old is still alive but in poor condition. The second was a 16 months old Arabic boy without typical features but with a cataract and stippled calfications of a limited number of epiphysae. Pathologic studies of the lens after cataract surgery showed the cataracts to be without any specific characters, the optic nerves were normal. The child now 3 yrs old is normally developed and in good conditions. It is remarquable to note that in both cases there was an history of consanguinity (mother and father were first cousins).

Abnormalities, Multiple↗