Biomedical subjects

B Riss

Publications and source records attributed to B Riss.

23 records · Page 2Linked to original sources

PubMed1981

Corneal sensitivity in pregnancy.

Only few studies are available on changes in corneal sensitivity during pregnancy, and most of the earlier work was done with instruments which gave only a rough approximation of the threshold of corneal sensitivity to touch. The new esthesiometer developed by Draeger permits, for the first time, an exact and reproducible determination of the threshold of corneal sensitivity to touch. We studied corneal sensitivity in 86 pregnant women between the 13th and 40th week of gestation. The thresholds were significantly higher in the study as compared to a control group of non-pregnant women. The decrease in corneal sensitivity was not related to duration of gestation, weight gain during pregnancy or mean arterial pressure at the time of examination. Possible mechanisms responsible for changes in corneal sensitivity in pregnancy are discussed.

Adolescent↗

PubMed1980

[Review of 402 goniotrephinations].

In a review of 402 goniotrephinations the preoperative diagnosis was open-angle glucoma in 61%, chronic congestive glaucoma in 21%, acute glaucoma in 11%, secondary glaucoma in 5%, and juvenile glaucoma in 2%. In 77% of the eyes followed for periods of up to seven years IOP returned to normal. Supplementary local therapy or digital eyeball massage raised the percentage of eyes with normal pressure values to 92,8%. Visual acuity was maintained or improved in 76%. There was no case of visual field defect during the early postoperative period, and no correlation was found between the regulation of IOP and the condition of the filtering bleb. In 10,4% complications occurred during the early postoperative period and in 1% late complications were seen. In 45% of the secondary glaucoma cases and in three out of seven cases of buphthalmus IOP was normalized.

Eye↗

PubMed1980

[Follow-up study of macular function after retinal detachment surgery (author's transl)].

Forty patients successfully operated on for retinal detachment involving the macula were followed up for periods ranging from six months to nine years. The follow-up examination included testing for visual acuity, color perception and metamorphopsias, as well as biomicroscopy and fluorescein angiography. Postoperative visual acuity was correlated with the preoperative duration of retinal detachment. As expected, visual outcome was reduced in cases with lesions demonstrated by biomicroscopy and/or fluorescein angiography. In some patients visual acuity and color perception were impaired and metamorphopsias were present, even though the macula appeared normal in funduscopy and fluorescein angiography. This may be due to a possible misalignement of the photoreceptors as demonstrated in the owl monkey by Machemer.

Adult↗

PubMed1979

[Massage of the bulb and intraocular pressure after goniotrepanation (author's transl)].

Intraocular pressure should be controlled via applanation tonometry, beginning with the fourth day after goniotrepanation, for a period of about three weeks, for early detection of postoperative pressure increases which can occur occasionally, so that they may be treated by digital massage of the bulb. This can be effective even in later post-operative pressure increases and support the effect of additional pressure-lowering treatment.

Eye↗

PubMedDate not supplied

[Prognostic value of changes in the fundus oculi in EPH gestosis].

We examined the ocular fundus in 100 unselected pregnant women with EPH-gestosis of different severity. In 52 women there were no retinal changes, in 32 women we saw I hypertensive changes according to the classification of Keith-Wagener, in 10 cases II, and in 6 cases III or IV retinal changes. There was no direct relationship between the severity of EPH-gestosis and I and II retinal changes; however, severe retinal changes (III IV) were associated with moderate or severe EPH-gestosis. We found a significant relationship between the degree of hypertensive retinal changes and fetal mortality. In the group of gravidae with severe retinal changes 4 out of 6 infants died. The examination of the ocular fundus permits the direct evaluation of fundal changes and the early recognition of fetal jeopardy.

Austria↗