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Investigative ophthalmology最新文献

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Effect of hyperosmotic agents on the ciliary epithelium and trabecular meshwork. 高渗剂对纤毛上皮和小梁网的影响。
Investigative ophthalmology Pub Date : 1976-08-01
S Okisaka, T Kuwabara, S I Rapoport
{"title":"Effect of hyperosmotic agents on the ciliary epithelium and trabecular meshwork.","authors":"S Okisaka,&nbsp;T Kuwabara,&nbsp;S I Rapoport","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Hyperosmotic agents (2 M urea or 2 M DL-lactamide), perfused into the internal carotid artery of Rhesus monkeys, produced a marked decrease in intraocular pressure and an increase in aqueous humor protein. Fenestrae of the ciliary capillaries were broken immediately following the perfusion and the nonpigmented epithelium was separated from the pigmented epithelium. The pigmented epithelium especially of the pars plana then became degenerative. As intraocular pressure began to rise slowly, three to seven days after perfusion, the nonpigmented epithelium recovered to an almost normal structure, but the pigmented epithelium did not regenerate. The surviving cells in the pars plicata formed the original apico-apical junctions. The number of vacuoles in the endothelium of Schlemm's canal decreased while the intraocular pressure was low and increased gradually with the recovery of the intraocular pressure.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"617-25"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12008490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial: Phototherapy and retinal damage. 社论:光疗和视网膜损伤。
Investigative ophthalmology Pub Date : 1976-08-01
V Dobson
{"title":"Editorial: Phototherapy and retinal damage.","authors":"V Dobson","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"595-8"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12137517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Studies on beta-crystallin from primate lens. 灵长类动物晶状体中β -晶体蛋白的研究。
Investigative ophthalmology Pub Date : 1976-08-01
J S Zigler, J B Sidbury
{"title":"Studies on beta-crystallin from primate lens.","authors":"J S Zigler,&nbsp;J B Sidbury","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The major beta-crystallin fractions from the human lens and the lenses of other selected primates have been isolated and partially characterized. Primate beta-crystallins, like those of most other mammals, consist of two heterogenous protein fractions (betaH and beta L) of quite different molecular size. Most of the polypeptide chains comprising the betaH and beta L heteropolymers are common to both fractions. Evidence is presented suggesting that primate betaH-crystallin may be smaller than betaH from other vertebrate species. Additionally, human betaH is found to contain a major component on sodium dodecyl sulfate (SDS) electrophoresis which is much larger (about 60,000 daltons) than other beta-crystallin polypeptides. Immunochemical evidence inidcates that some components of primate beta-crystallin have evolved rapidly, although at least one antigenic component is very conservative and gives a reaction of identity with all other vertebrate beta-crystallins studied.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"673-7"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12008491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The measurement of ocular transmittance and irradiation distribution in argon laser irradiated rabbit eyes. 氩激光照射兔眼透光率及照射分布的测定。
Investigative ophthalmology Pub Date : 1976-08-01
T P Kidwell, L A Priebe, A J Welch
{"title":"The measurement of ocular transmittance and irradiation distribution in argon laser irradiated rabbit eyes.","authors":"T P Kidwell,&nbsp;L A Priebe,&nbsp;A J Welch","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The transmittance of the ocular media has been measured in vivo in rabbit eyes using an argon laser light source and microthermocouple sensor. The intensity profiles at the cornea and retina were measured with the thermocouple and the ratio of the power associated with the intensity profiles indicated the fraction of light power reaching the retina. Measurements from 10 rabbits indicated a transmittance coefficient of 0.85 for wavelengths between 488 and 514.5 nm.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"668-71"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12137524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analog vs. digital photogrammetry for optic cup analysis. 光学杯分析的模拟与数字摄影测量。
Investigative ophthalmology Pub Date : 1976-08-01
M S Kottler, A R Rosenthal, D G Falconer
{"title":"Analog vs. digital photogrammetry for optic cup analysis.","authors":"M S Kottler,&nbsp;A R Rosenthal,&nbsp;D G Falconer","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This report compares the reproducibility of analog and digital photogrammetry for topographical analysis of the optic cup. Ten simultaneous stereophotographs of each of three optic discs were taken with the Zeiss fundus camera plus a twin-prism stereoseparator. Digital processing produced photogrammetric contours of the optic cup and estimates of its geometry. Optic cup contours from the same stereopairs were also drawn with an analog stereoplotter and were analyzed by manual planimetry. The reproducibility of digital photogrammetry and analysis for estimation of cup depth, cup width, cup cross sectional area, and cup volume was concluded to be generally superior to the reproducibility of analog photogrammetry and manual analysis.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"651-4"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12137519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adaptive programming of phasic and tonic components in saccadic eye movements. Investigations of patients with abducens palsy. 跳眼运动中相位和张力成分的自适应编程。外展肌麻痹患者的调查。
Investigative ophthalmology Pub Date : 1976-08-01
G Kommerell, D Olivier, H Theopold
{"title":"Adaptive programming of phasic and tonic components in saccadic eye movements. Investigations of patients with abducens palsy.","authors":"G Kommerell,&nbsp;D Olivier,&nbsp;H Theopold","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Two patients with unilateral abducens palsy used their paretic-but visually superior-eye for fixation. In these patients, adaptive changes of saccadic amplitude and of the relation between phasic and tonic components of saccades were found. These changes led to a reduction of foveation time.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"657-60"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12137521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An explanation for the long duration of mydriatic effect of atropine in eye. 阿托品在眼内长时间散瞳效应的解释。
Investigative ophthalmology Pub Date : 1976-08-01
M Salazar, P N Patil
{"title":"An explanation for the long duration of mydriatic effect of atropine in eye.","authors":"M Salazar,&nbsp;P N Patil","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The mydriatic effect of topically applied 3H-atropine (2%) was compared in the pigmented rabbits (black fur and dark brown irides) and nonpigmented (albino) atropinesterase-negative rabbits. The duration, t1/2, of the mydriatic effect in the nonpigmented and pigmented rabbit was 43.5 and greater than 96 hours, respectively. At hour 96, the tissue 3H-atropine in the pigmented iris was greater than that in the nonpigmented iris by the factor of eight. The longer duration of mydriatic effect in the pigmented iris is explained by the slow release of the bound drug from the pigment onto the muscarinic receptors.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"671-3"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12137525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The dynamics and location of axonal transport blockade by acute intraocular pressure elevation in primate optic nerve. 灵长类视神经急性眼压升高引起轴突运输阻滞的动态和位置。
Investigative ophthalmology Pub Date : 1976-08-01
H Quigley, D R Anderson
{"title":"The dynamics and location of axonal transport blockade by acute intraocular pressure elevation in primate optic nerve.","authors":"H Quigley,&nbsp;D R Anderson","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Axonal transport in primate optic nerve axons was studied by autoradiography, scintillation counting, and electron microscopy under conditions of short-term intraocular pressure elevation. With elevation of intraocular pressure to 30 mm. Hg below mean arterial blood pressure, blockage of transport was detected within 2 hours by autoradiography and within 1 hour by electron microscopy. The earliest buildup of radioactively labeled protein and ultrastructurally visible cellular organelles was within the scleral lamina cribrosa. The degree of blockage, judged by amount of label buildup, increased with time. Some transported material traversed the lamina cribrosa despite pressure elevation at the level tested. Reversal of transport blockade occurred rapidly after normalization of intraocular pressure.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"606-16"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11282001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effects of aspirin and indomethacin on the ocular response to circulating bacterial endotoxin in the rabbit. 阿司匹林和吲哚美辛对家兔眼部循环细菌内毒素反应的影响。
Investigative ophthalmology Pub Date : 1976-08-01
E L Howes, D G McKay
{"title":"The effects of aspirin and indomethacin on the ocular response to circulating bacterial endotoxin in the rabbit.","authors":"E L Howes,&nbsp;D G McKay","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A transient iridocyclitis is produced in rabbits by the intravenous injection of bacterial endotoxin. A major feature of this response is an altered vascular permeability which can be measured by the ocular accumulation of circulating 125I-labeled albumin. The present study was made to determine the effects of inhibitors of prostaglandin synthesis of the ocular response to an E. coli 055:B5 endotoxin. Aspirin pretreatment prevented the ocular response following the intravenous injection of 10 mug per kilogram of endotoxin, but had no effect following 100 mug per kilogram. Indomethacin pretreatment prevented an alteration in ocular vascular permeability 1 1/2 hours after the injection of 100 mug per kilogram of endotoxin and significantly reduced the alteration 4 hours after endotoxin. Thus inhibitors of prostaglandin synthesis can prevent the ocular response to circulating endotoxin depending on their relative potency and the amount of injected endotoxin. These results suggest that prostaglandins are important in the ocular response to circulating endotoxin in the rabbit.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"648-51"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11976453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Morphological fiber types of retractor bulbi muscle in mouse and rat. 小鼠和大鼠牵开球肌的形态纤维类型。
Investigative ophthalmology Pub Date : 1976-08-01
B R Pachter, J Davidowitz, G M Breinin
{"title":"Morphological fiber types of retractor bulbi muscle in mouse and rat.","authors":"B R Pachter,&nbsp;J Davidowitz,&nbsp;G M Breinin","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Retractor bulbi muscles of mouse and rat were examined by light and electron microscopy. Two morphological fiber types were observed, analogous to Type I and Type II cells of skeletal musculature and comparable to fibers observed in the global region of the rectus extraocular muscles of these species.</p>","PeriodicalId":14844,"journal":{"name":"Investigative ophthalmology","volume":"15 8","pages":"654-7"},"PeriodicalIF":0.0,"publicationDate":"1976-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12137520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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