摘要:

A study on the occurrence of pseudoexfoliatio lentis was performed on an Icelandic population consisting of 634 persons of all age groups. The frequency was high, 3.16% at 40–49 years, 4.29% at 50–59 years, 13.56%, at 60–69 years and 43% at the age of more than 70 years. In addition, two persons less than 40 years of age had pseudoexfoliatio lentis.Depth of the anterior chamber did not significantly deviate from the Scandinavian comparison mat

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01753.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

The EOG is influenced by the corneo‐retinal potential of the contralateral eye. This contralateral influence results in polarity reversal in severely destructed eyes which do not have their own corneo‐retinal potential. In eyes with a decreased corneo‐retinal potential the contralateral effect can cause polarity reversal only during the light adapted period. Contralateral influence on eyes with abolished light sensitive component but a relatively well preserved light‐insensitive component results in a paradoxical curve. Deterioration of the light‐sensitive part of the EOG concerns primarily the positive component. In severely impaired eyes the EOG value should be corrected to allow for the influence of the contralateral sound eye; a formula, devised for calculating the corrected values, is given in a sec

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01754.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

The derivation of the contralateral effect from EOG data is presented. The mathematical procedure can be adapted to special experimental conditions, such as unilateral occlusion, and asymmetric fixation, or for instance to a group of patients with unilateral enucleation. The contralateral spread of the standing potential of the eye is significantly shown by the experimental results, and is expressed by a factor f. This factor is of the order of 15% and represents the fraction of the ipsilateral potential that is measured contralaterally. A method is given to correct the EOG data in case of unilateral impairment.

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01755.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Conjunctival biopsy specimens were taken from the inferior fornix of 16 eyes affected with benign mucous membrane pemphigoid (BMMP). Biopsy revealed in all cases metaplasia changing the normal columnar epithelium into squamous epithelium, with parakeratinization in eight specimens and keratinization as well, in four. Correlation was noticed between keratinization and reduced secretions of both tears and mucus.Mucus‐producing goblet cells were remarkably scarce in eight cases and totally absent in the remaining eight. This corresponds approximately to the result of an estimation of the mucus secretion by measuring the mucous thread after vital staining with a tetrazolium‐alcian blue mixture. Four of the 16 biopsies revealed fibrosis of the submucous connective tissue. The connective tissue was found to contain relatively few neutrophilic granulocytes. In two cases eosinophilic granulocytes were present in small numbers, while several lymphocytes and plasma cells were seen, in five, even an adenoid layer. Neither bullae nor acantholysis were demonstrated. Such cytological methods as examinations of smears and quantitative pipette samples can disclose epithelial changes, and examination of the mucous thread can be used as a goblet cell function test. Hence these methods can, to a certain extent, replace the procedure for estimating the goblet cell content in a conjunctival biopsy specimen. Taking biopsy specimens has the disadvantages of causing pain, tissue damage and additional cicatricial shrinkage. Furthermore, a small biopsy specimen is not always representat

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01756.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Propranolol, aβ‐adrenergic blocking agent, was given by mouth to 22 patients with elevated IOP resistent to conventional medical treatment or where conventional treatment was contraindicated. A lasting reduction of IOP was obtained in 11 cases; open‐angle glaucoma or elevated IOP responded best. No significant side‐effects were observed. Having in mind the contraindications ofβ‐adrenergic blocking agents, propranolol can be usefully employed in ophthalmology for controlling ele

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01757.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

A total of 206 eyes have been subjected to vital staining with 1% alizarin red (in 64 cases followed by staining with a mixture of rose bengal and fluorescein and in 104 cases by a mixture of alizarin red and lissamine green).Forty‐seven preparations have been examined in the microscope.The investigation disclosed that alizarin redpartlyeffects specific staining of calcareous deposits (in the mucous thread of the conjunctival fornix, in slaked lime corrosion, and in meibomian gland infarcts), andpartlycauses staining resembling a weak rose bengal staining (degenerate cells, dead cells, and mucus).Vital staining with the alizarin‐lissamine mixture gives calcium a red colour (alizarin alone), while cells and mucus are stained blue (both components) or green (lissamine alo

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01758.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Results are reported of determinations of glucose concentrations in aqueous humour and plasma, of pyruvate concentrations in aqueous humour, and of citrate concentrations in aqueous humour and plasma from 22 non‐fasting and 17 fasting patients with senile cataracts, five fasting diabetics with senile cataracts, and four patients with cataract and other ocular diseases. Higher pyruvate concentrations were found in the non‐fasting group with senile cataract than in the fasting senile cataract group (P<0.01). The group of diabetics likewise presented higher pyruvate concentrations than the group of fasting senile‐cataractous patients (P<0.05).The Spearman coefficient of rank correlation showed a positive correlation between cataract density and citrate concentrations in the aggregate series (P<0.05). Senile cortical cataracts and senile nuclear plus cortical cataracts differed in that the citrate aqueous/citrate plasma ratio calculated for the whole series collectively was the lowest in the latter group (P<0.05). Further investigations into the metabolite concentrations at different stages of cataract are, however, required, as an error of the first kind because of multiple significance tests cannot be left out of account in the present mat

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01759.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

With the help of a method based on the Goldmann projection perimeter, measurements of spectral sensitivity during chromatic adaptation are performed utilizing the principle of the two‐colour threshold technique of Stiles. The method is flexible and is used for central as well as for peripheral registration. Characteristic sensitivity curves and static perimetry curves of normally sighted persons are demonstrated showing that each type of cones can be clearly separated and identified. With smaller sized objects, the foveal blue blindness is confirmed whilst in the parafoveal region the response of the blue receptor is goo

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01760.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Highly efficient interference filters, the design and manufacture of which were controlled by computer programmes, are described. These filters may be used for a variety of purposes, including immunofluorescence microscopy and retinal fluorescein angiography. The filters are characterized by high transmission, great selectivity and a steep front of the transmission curve. Their use in the colour fluorescein angiography of the fundus is reported below.

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01761.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

A follow‐up (measurement by measuring ocular in the Haag Streit slit lamp) of 90 scleral plaques in 47 patients from 6 to 12 months after the primary examination showed the plaques to have increased in size: on an average 40% in height and 34% in breadth, growing more away from than towards the limbus corneae.The previously advanced theories concerning their cause: desiccation, poor blood supply, and mechanical muscular action, are discussed.The first theory is refutable by the growth direction of the plaque. The third one is borne out by the growth direction of the plaque, its site in front of the muscle insertion and by the plaque being found most frequently in front of the medial horizontal eye muscle

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1974.tb01762.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY