Simultaneous bilateral fluorescein angiography of the retina and the iris in central retinal vein occlusion

Baarsma, G. S.; Riaskoff, S.; Bruijn, Dick de

doi:10.1007/bf00141134

Int Ophthalmol

1983

DOI: 10.1007/bf00141134

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Simultaneous bilateral fluorescein angiography of the retina and the iris in central retinal vein occlusion

G. S. Baarsma

S. Riaskoff

Dick de Bruijn

Abstract: Twenty-two patients with a recently developed C.R.V.O. (central retinal vein occlusion) (symptoms: less than four weeks) are discussed. A delay in A.R.C.T. (arm to retina circulation time) in the affected eye was found in two patients with an ischaemic type of C.R.V.O. and in 3 patients with a non-ischaemic type of C.R.V.O. No side difference could be demonstrated in A.I.C.T. (arm to iris circulation time). Leakage of radial iris vessels on fluorescein angiography was found in 6 out of 7 patients with an ischa… Show more

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“…The rationale for this method is that it can reveal anterior segment ischemia which supposedly increases the risk of neovascular glaucoma. In spite of positive reports on its value (Baarsma et al 1983) the method has found no widespread use.…”

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confidence: 99%

Fluorescein angiography of the iris in the management of eyes with central retinal vein occlusion

Lindblom

1998

Acta Ophthalmologica Scandinavica

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ABSTRACT.Purpose: To study fluorescein angiography of the iris as a means of identifying eyes at risk for developing secondary glaucoma after central retinal vein occlusion. Methods: Fluorescein angiography of the iris was performed with a scanning laser ophthalmoscope in 27 patients (27 eyes). Individual images were by computer, determining relative areas of fluorescein staining and leakage. Results: The best predictor of secondary glaucoma was the relative area showing staining. Neither relative area of leakage nor presence of iris rubeosis, age, or initial visual acuity were effective means of predicting which eyes would develop secondary glaucoma. This occurred in six eyes; all were treated with argon laser photocoagulation. No eye was enucleated. Conclusion: Iris angiography can identify eyes at risk for secondary glaucoma but specificity is poor. The often recommended regime to perform laser photocoagulation in all eyes with iris neovascularisations was challenged.

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confidence: 99%

Fluorescein angiography of the iris in the management of eyes with central retinal vein occlusion

Lindblom

1998

Acta Ophthalmologica Scandinavica

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Differentiation of ischemic from non-ischemic central retinal vein occlusion during the early acute phase

Hayreh

Klugman

Beri

et al. 1990

Graefe's Arch Clin Exp Ophthalmol

196

204

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We investigated prospectively in 128 patients (140 eyes) the role of six routine clinical tests in the differentiation of ischemic central retinal vein occlusion (CRVO) from non-ischemic CRVO during its early acute phase. There were four functional tests [visual acuity, visual fields, relative afferent pupillary defect (RAPD), electroretinography (ERG)] and two morphologic tests (ophthalmoscopy and fluorescein fundus angiography). We found that none of the six tests had 100% sensitivity and specificity in such a differentiation during the early, acute phase, so that no one test can be considered a "gold standard"; however, combined information from all six is almost always reliable. Overall, the four functional tests proved far superior to the two morphologic tests in differentiating ischemic from non-ischemic CRVO:RAPD was most reliable in uniocular CRVO (with a normal fellow eye), followed closely by ERG in all cases; combined information from RAPD and ERG differentiated 97% of cases; perimetry was the next most reliable, followed by visual acuity. The two morphologic tests performed worst; fluorescein angiography provided either no information at all on retinal capillary nonperfusion (in at least one-third of the eyes during the early, acute phase) because of multiple limitations, or sometimes provided misleading information. Ophthalmoscopic appearance is the least reliable, most misleading parameter.

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Effects of LED spectrum on circadian rhythmic expression of clock genes and Aanat2 in the brain of juvenile European seabass (Dicentrarchus labrax)

Liu²,

Wei³

et al. 2023

Front. Mar. Sci.

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The circadian rhythm is a physiological phenomenon that occurs in various organisms with a cycle of about 24 hours. Light is one of the important environmental factors affecting biological rhythm. To clarify whether a shift in light spectrum can influence the circadian expression in fish brain, a total of 175 European seabasses [body weight: 32.5 ± 0.71) g; body length: (13.78 ± 0.35) cm] were exposed to white light (WL), red light (RL), yellow light (YL), green light (GL) or blue light (BL). After 50 days of exposure, circadian expressions of four core clock genes (Clock, Bmal1, Per2, Cry1) and Aanat2 gene in brain were examined. The results showed that the temporal expression patterns of positive clock gens (Clock and Bmal1) showed increases during the scotophase and decreases during the photophase, with peaks near the middle of the darkness. Clock gene expression showed a stable circadian rhythm (R2 = 0.578-0.824, P=0.000- 0.027) in all light groups while Bmal1 showed circadian rhythm in WL, GL and RL, not in BL and YL. Daily expression patterns of the negative clock genes oscillated in the opposite phase from the positive clock genes, showing increasing mRNA levels during the light, decreases during the dark, and peaks near the shift from night to day, except Per2 in RL and Cry1 in BL. Compared with WL, the acrophases of Clock and Bmal1 were delayed under all light treatments (BL: + 3.7h, +6.73h; RL: +2.4h,+1.35h; YL: + 4.94h, 2.00h; GL: +0.05, +0.16h). Cry1 showed advanced acrophase under all light treatments (BL: -10.74 h, GL: -3.81 h, RL: -3.93 h, YL: -7.56 h) but Per2 showed delayed acrophase in all light treatments (GL: +0.86 h, RL: +10.35 h, YL: +9.62 h), except in BL (-0.43 h). The acrophase of Aanat2 was advanced by all monochromatic light, the Aanat2 level was significantly increased in RL compared with other light treatment. Therefore, the results indicate that RL may regulate the expression of Aanat2 gene by affecting the expression of clock gene in fish brain. Spectrum can affect the biological clock system of fish, and unreasonable spectrum may disturb the rhythm of gene expression of biological clock of fish. Under the irradiation of light spectrum, some clock genes still maintain obvious circadian oscillation, while the rhythm of some clock genes is not obvious and may be destroyed. Our findings suggest a primary role of light spectrum information to the fish brain circadian system.

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Simultaneous bilateral fluorescein angiography of the retina and the iris in central retinal vein occlusion

Cited by 5 publications

References 11 publications

Fluorescein angiography of the iris in the management of eyes with central retinal vein occlusion

Fluorescein angiography of the iris in the management of eyes with central retinal vein occlusion

Differentiation of ischemic from non-ischemic central retinal vein occlusion during the early acute phase

Effects of LED spectrum on circadian rhythmic expression of clock genes and Aanat2 in the brain of juvenile European seabass (Dicentrarchus labrax)

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