摘要:

The construction and operation of an apparatus for controlled rate corneal freezing is described. The cooling is obtained by close thermal contact between a vial holding the cornea and a metal core. A predetermined cooling rate is achieved by partial immersion of the core in a fixed amount of liquid nitrogen. In a preliminary series ≥ 95% endothelial survival was obtaine

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06090.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Occlusion or thrombosis of the superior ophthalmic vein or of the cavernous sinus is an unspecific finding that may be secondary to different disorders such as tumours of the skull base or nasopharynx. Sometimes, however, no underlying disorder is found in spite of an extensive clinical and radiological evaluation. Eight such cases are here presented. Similar cases have previously been described, both as examples of the Tolosa‐Hunt syndrome and as aseptic cavernous sinus thrombosis. The literature on these two disorders is reviewed and different diagnostic criteria discusse

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06091.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

The break up time (B. U. T.) of the precorneal film has been studied before and after application of 34 different vehicles. The material examined comprised 646 eyes.Maximum increase of the B. U. T. was obtained with 2% methyl cellulose (four times) and 10% polyvinyl alcohol (seven times). These vehicles in the usually employed concentrations, fat‐free ointment (polyethylene glycol), acetyl cysteine and polysaccharide (dextran) affected a less pronounced prolongation.The B. U. T. was reduced four or five times by fatty, anhydrous ointments and by silicone oil, about two or three times by emulsions and oils, and twice by 0.01% benzalkonium chloride.The clinical significance of the B. U. T. alterations is discusse

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06092.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Patients suffering from migraine, cluster headache and atypical cluster headache, including patients with chronic paroxysmal hemicrania, were studied with respect to corneal temperature, intraocular pressure and corneal indentation pulse amplitude changes during pain attacks. Significant rises in these three parameters were demonstrated during attacks of cluster headache and atypical cluster headache, indicating that intraocular vasodilatation with increased ocular blood flow occurs during attacks. No definite changes were found in migraine. The results strongly suggest that significant pathophysiological differences exist between migraine and cluster headache. The point is stressed that these disorders probably represent separate pathogenetic entities and should be classified as such, and not be grouped together within an ill‐defined group of “vascular headac

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06093.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

In 1967 a new microsurgical procedure for glaucoma known as trabeculectomy was introduced. This method is reported to have few early complications and a good pressure‐reducing effect. Our material presents the results of 330 consecutive trabeculectomies with a follow‐up period of ½‐3 years. The following items are discussed: IOP, visual acuity, visual fields, surgical complications, and need of re‐operation and medical postoperative therapy. We conclude that trabeculectomy is a safe and efficient antiglaucoma operation, recommended as an attractive alternative to heavy me

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06094.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

A blind but grossly normal eye was removed because of severe pain. With the patient's consent, photo‐coagulation markers were placed along the horizontal meridian of the retina prior to surgery. The angular coordinates in visual space of the markers were determined by an ophthalmoscopic procedure. The loci of the markers were also determined in a flat preparation following enucleation. The relationship between retinal arc and perimetric eccentricity was found to be approximately linear up to at least 50 degrees. Our findings validate earlier theoretical calculations within this rang

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06095.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

The intercellular junctions of the corneal endothelium has been studied in rabbit, monkey and human eyes. A union of apposing outer leaflets (tight junction) is usually found near the apical end of the intercellular clefts. However, evidence from lanthanum tracer studies indicates that the tight junctions do not seal the intercellular clefts completely. In addition to tight junctions, the presence of gap junctions or nexuses is demonstrated in all three species studied.

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06096.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

The diagnostic value of nerve fiber layer photography is assessed. The series comprised 39 patients with various neuro‐ophthalmological diseases. Photography of the nerve fibers in the retina is time consuming and requires skill on the part of the photographer. Differences in the papillomacular nerve fiber layer are difficult to distinguish using the present methods. The wasting of nerve fibers could be documented by photography in advanced cases with bitemporal hemianopia, but not in small relative scotomas. Cases with homonymous hemianopia are interesting because lesions in the optic tract can be differentiated from affections of the second neuron on the basis of retinal nerve fiber atrophy. In demyelinating diseases inspection of the retinal nerve fiber layer is of clinical importance and diagnostic changes appea

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06097.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Mechanical and histochemical properties of inferior oblique muscles (IO) were compared in adult albino rat and pigmented cat. The twitch contraction times and the fusion frequencies were about the same in both species indicating similar contractile properties of the fast contracting fibers. Rat IO seemed to contain fewer slowly contracting fibers than cat IO; half‐decay time of the twitch was shorter in rat than in cat muscles and fusion started at higher stimulus frequencies. Fatigue resistance was lower in rat than in cat. Post‐tetanic potentiation occurred in the cat but not in the rat IO.Almost all fibers of rat IO were rich in myofibrillar ATPase. In cat IO most fibers showed high myofibrillar ATPase activity, but some fibers in the global layer had moderate to small amounts of this enzyme. This correlates well with the physiological differencies between cat and rat

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06098.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

The ocular state of 28 ascertained non‐alcoholic females with cirrhosis of the liver was assessed. Only twenty were able to go through the complete colour vision test, and among these, three patients (one without, and two with increased level of serum bilirubin) with acquired colour vision defects were observed. Visual acuity, visual field, intraocular pressure, binocular function, slit lamp microscopy, ophthalmoscopy and tear production were normal in all cases. It is concluded that the frequency of colour vision defects in the present sample is increased, and that alcohol abuse is not a prerequisite for colour vision defects in patients with cirrhosi

ISSN:1755-375X    

DOI:10.1111/j.1755-3768.1977.tb06099.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY