Retrobulbar Blood Flow in Idiopathic Dilated Episcleral Veins and Glaucoma

Grieshaber, Matthias C.; Dubler, Barbara; Knodel, C.; Killer, Hanspeter E.; Orgül, Selim

doi:10.1055/s-2007-962946

Cited by 14 publications

(10 citation statements)

References 7 publications

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“…It is important to note that 18,19,20,21 even when the IOP is controlled by surgery, dilation and tortuosity of episcleral veins may or may not resolve as 9,22 was seen in our patient.…”

Section: Discussionmentioning

confidence: 61%

Unilateral Idiopathic Dilated Episcleral Vein with Secondary Open Angle Glaucoma (Radius–Maumenee Syndrome) in an African – A case report and literature review

Otulana¹,

Onabolu²,

Fafiolu³

2008

Nigerian Journal of Ophthalmology

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A 69-year-old woman was seen in the eye clinic of the Olabisi Onabanjo University Teaching Hospital [OOUTH], Sagamu, south-west Nigeria, with irritation in the right eye due to a vascular nasal pterygium, but asymptomatic in her left eye. Examination revealed dilated and tortuous conjunctival and episcleral vessels in her left eye with no apparent cause. She later developed secondary glaucoma in that eye. A diagnosis of left idiopathic dilated episcleral vein with secondary open angle glaucoma [Radius Maumenee syndrome] was made. She was treated both medically and surgically. This rare case in anAfrican woman is presented in order to highlight the possibility of secondary vascular glaucoma in a patient with chronic redness of the eye without symptoms of discomfort or allergy.

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“…It is important to note that 18,19,20,21 even when the IOP is controlled by surgery, dilation and tortuosity of episcleral veins may or may not resolve as 9,22 was seen in our patient.…”

Section: Discussionmentioning

confidence: 61%

Unilateral Idiopathic Dilated Episcleral Vein with Secondary Open Angle Glaucoma (Radius–Maumenee Syndrome) in an African – A case report and literature review

Otulana¹,

Onabolu²,

Fafiolu³

2008

Nigerian Journal of Ophthalmology

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“…[1][2][3][4][5][6][7][8] Many techniques have been used for assessing ocular circulation, such as a laser Doppler flowmeter, fluorescein, indocyanine green angiographies, ultrasound color Doppler imaging, magnetic resonance imaging, and Doppler optical coherence tomography (OCT). [1][2][3][4][5][6][7][8] Many techniques have been used for assessing ocular circulation, such as a laser Doppler flowmeter, fluorescein, indocyanine green angiographies, ultrasound color Doppler imaging, magnetic resonance imaging, and Doppler optical coherence tomography (OCT).…”

Section: Introductionmentioning

confidence: 99%

En faceDoppler total retinal blood flow measurement with 70 kHz spectral optical coherence tomography

Tan

Liu

et al. 2015

J. Biomed. Opt

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An automated algorithm was developed for total retinal blood flow (TRBF) using 70-kHz spectral optical coherence tomography (OCT). The OCT was calibrated for the transformation from Doppler shift to speed based on a flow phantom. The TRBF scan pattern contained five repeated volume scans (2 x 2 mm) obtained in 3 s and centered on central retinal vessels in the optic disc. The TRBF was calculated using an en face Doppler technique. For each retinal vein, blood flow was measured at an optimal plane where the calculated flow was maximized. The TRBF was calculated by summing flow in all veins. The algorithm tracked vascular branching so that either root or branch veins are summed, but never both. The TRBF in five repeated volumes were averaged to reduce variation due to cardiac cycle pulsation. Finally, the TRBF was corrected for eye length variation. Twelve healthy eyes and 12 glaucomatous eyes were enrolled to test the algorithm. The TRBF was 45.4 ± 6.7 μl/min for healthy control and 34.7 ± 7.6 μl/min for glaucomatous participants (p-value = 0.01). The intravisit repeatability was 8.6% for healthy controls and 8.4% for glaucoma participants. The proposed automated method provided repeatable TRBF measurement.

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“…Other tests, including neuro-imaging examination, orbital venography and angiography, were also negative. Although the pathogenesis of this condition remains obscure, it is believed that the presence of abnormal pressure in blood drainage could explain the emergence of the condition (3) . One hypothesis to explain the difficulty of venous return involves the hyalinization of Schlemm's canal, which causes distal obstruction of the anterior chamber (4) .…”

Section: Discussionmentioning

confidence: 99%