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Biomedical subjects

Y Kitazawa

Publications and source records attributed to Y Kitazawa.

At least 235 records · Page 13Linked to original sources
PubMed1980

Effects of timolol on corneal sensitivity and tear production.

A double-masked study was carried out to assess the effect of timolol ophthalmic-solution on corneal sensitivity in seven normal volunteers. No significant change in corneal sensitivity was demonstrated during four weeks of timolol administration. Corneal sensitivity was determined in two age-matched groups, one comprising 27 glaucomatous patients on timolol therapy for at least three months and the other consisting of 24 normal individuals who had never been on any beta-blocking agents. No significant difference in corneal sensitivity was noted between the two groups. The tear production was determined by means of the Schirmer test I in 15 patients with primary open-angle glaucoma or ocular hypertension prior to and during timolol therapy of 13 months duration. No significant change in tear production was noted.

Adult↗
PubMed1977

Craniometaphysial dysplasia with leukoencephalopathy. A case report.

A case of craniometaphysial dysplasia with extensive degeneration of the cerebral white matter is presented. The cortex of the swollen part of the long bones was quite thin and there was striking trabecular atrophy. Both the vault and base of the skull showed marked thickening and sclerosis, leaving no interlaminal zone. It is probable that the diffuse degenerative change of the cerebral white matter with gliosis bears some resemblance to that produced by a circulatory disturbance of the great vein of Galen. Due to the narrowed foramen magnum, deformed atlase and axis, and the surrounding postoperative scar, the upper cervical cord was compressed, markedly atrophic and degenerated. Other segments of the cervical and thoracic cord displayed secondary wallerian degeneration and focal neurolytic lesions in the white matter. At the level of Th11 there was a pencil-like malacic lesion, suggesting an apparent interference of circulatory disturbance due possibly to the deformed vertebral column.

Adult↗
PubMed1977

Untreated ocular hypertension. A long-term prospective study.

A prospective study was designed to determine the course of ocular hypertension without visual field loss if untreated and to estimate the value of various clinical findings in prediction the course of ocular hypertension. Seventy-five patients with intraocular pressure greater than 21 mm Hg but without demonstrable visual field defects were followed up without glaucoma therapy for a minimum of nine years. While under observation, seven of 75 ocular hypertensives developed typical glaucomatous visual field defects. Both the sensitivity and the specificity of each clinical finding in the individuals who later developed visual field defects were determined, and none of the clinical findings was found to be a good predictive indicator.

Adult↗
PubMed1976

Increased intraocular pressure induced by corticosteroids.

Twelve patients who were highly responsive to topically administered betamethasone were subjected to various corticosteroid preparations (four times daily for four weeks). Each patient was tested in the same eye with fluorometholone, tetrahydrotriamcinolone, medrysone, and betamethasone and the potential to elvate intraocular pressure was determined. The response of intraocular pressure to all the corticosteroids was dose-related and a highly significant correlation was demonstrated between the concentration of betamethasone and the magnitude of intraocular pressure response. The order of potential of corticosteroids to elevate IOP was betamethasone 0.1%, betamethasone 0.05%, tetrahydrotriamcinolone 1.25%, betamethasone 0.02%, fluorometholone 0.1%, medrysone 1.0%, and betamethasone 0.01%. Tetrahydrotriamcinolone 0.25% and fluorometholone 0.05 and 0.01% failed to elevate intraocular pressure significantly.

Adrenal Cortex Hormones↗
PubMed1975

Chemical sympathectomy with 6-hydroxydopamine in the treatment of primary open-angle glaucoma.

Chemical sympathectomy with 6-hydroxydopamine combined with subsequent topical epinephrine therapy was evaluated with regard to intraocular pressure effects in primary open-angle glaucoma. After chemical sympathectomy intraocular pressure was maintained below 20 mm Hg with 1.0% epinephrine three times daily in 29 of 36 eyes of 25 patients for two to 29 weeks. Chemical sympathectomy combined with epinephrine therapy was most effective in patients whose intraocular pressure had been well controlled with pilocarpine and epinephrine and was less effective in patients whose intraocular pressure had not been controllable with maximum medical therapy prior to the administration of 6-hydroxydopamine. The results of this study suggest that chemical sympathectomy combined with topical epinephrine therapy has considerable clinical value in the medical management of primary open-angle glaucoma.

Acetazolamide↗
PubMed1975

Diurnal variation of intraocular pressure in primary open-angle glaucoma.

Intraocular pressure was measured with a Goldmann applanation tonometer in 12 normal individuals (24 eyes), 14 ocular hypertensives (28 eyes), and 14 patients (27 eyes) with primary open-angle glaucoma every hour for 24 hours. In most subjects, pressure was highest sometime during the day and pressure elevation before rising was not demonstrated. The lowest intraocular pressure was most frequently observed early in the morning, whether the patient was normotensive or hypertensive. Fourteen of 27 glaucomatous eyes had intraocular pressure below 20 mm Hg early in the morning.

Adolescent↗