Chorioretinal degenerative changes in the tilted disc syndrome

Giuffrè, Giuseppe

doi:10.1007/bf00150971

Cited by 73 publications

(30 citation statements)

References 13 publications

(18 reference statements)

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“…Optic disc tilt was identified by the tilt ratio, defined as the ratio between the longest (LD) and shortest (SD) diameters of the optic disc (tilt ratio ¼ LD/SD). [16][17][18] Optic disc torsion was defined as the deviation of the long axis of the optic disc from the vertical meridian. 4,5 The vertical meridian was identified as a vertical line 901 from a horizontal line connecting the fovea, which is 21 to 61 below the optic disc, to the center of the optic disc.…”

Section: Subjectsmentioning

confidence: 99%

Posterior staphyloma is related to optic disc morphology and the location of visual field defect in normal tension glaucoma patients with myopia

Park

Jung

Park

2014

Eye

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Purpose To determine the morphologic features of the optic disc and the location of visual field (VF) defect in relation to posterior staphyloma in normal tension glaucoma (NTG) eyes with myopia. Methods One hundred and thirty-four NTG patients with myopia were enrolled. B-scan ultrasonography was performed in enrolled patients. Disc tilt ratio, disc torsion, and area of peripapillary atrophy were measured from disc photographs. Patients were classified according to the presence of posterior staphyloma and its location: staphyloma involving the optic disc, staphyloma involving either the supero-temporal side of the optic disc or the infero-temporal side of the optic disc. The relationship between the location of the posterior staphyloma and that of the VF defect was analyzed. Results Among 134 eyes, 74 eyes (55.2%) had posterior staphyloma on B-scan ultrasonography. Mean torsion degree was significantly greater in eyes with staphyloma involving the temporal side of the optic disc (19.78±18.001) compared with eyes with staphyloma involving the optic disc (4.65±4.921, P ¼ 0.001). The frequency of the location of VF damage differed significantly between eyes with staphyloma involving the supero-temporal side and those involving the infero-temporal side of the optic disc (P ¼ 0.008), which was not significant in eyes with staphyloma involving the optic disc (P ¼ 0.813).Conclusions Optic disc torsion was a prominent finding in myopic NTG eyes when posterior staphyloma was located temporal to the optic disc. The location of posterior staphyloma was related to the direction of disc torsion and the location of VF defect.

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Section: Subjectsmentioning

confidence: 99%

Posterior staphyloma is related to optic disc morphology and the location of visual field defect in normal tension glaucoma patients with myopia

Park

Jung

Park

2014

Eye

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“…If the tilt ratio of the optic disc exceeded 1.30, then the optic disc was classified as a tilted disc. [21][22][23] Disc torsion refers to the deviation of the long disc axis from the vertical meridian (ie, the vertical line perpendicular to a reference line connecting the fovea and the disc center). The angle between the vertical meridian and the long axis of the disc is the degree of torsion.…”

Section: Subjectsmentioning

confidence: 99%

Ocular characteristics associated with the location of focal lamina cribrosa defects in open-angle glaucoma patients

Park

Hwang

Park

2016

Eye

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Purpose To investigate the clinical characteristics according to the location of focal lamina cribrosa (LC) defects and its associated ocular features. Patients and methods A total of 139 openangle glaucoma patients underwent Spectralis optical coherence tomography (OCT) with enhanced depth imaging. Alterations in the contour of the LC were investigated to find focal LC defects. The location of the visible LC defect from the neural canal wall (farperipheral and mid-peripheral) and clockhour position (superotemporal, temporal and inferotemporal) were classified. Disc ovality ratio and disc-foveal angle were measured from disc and retinal nerve fiber layer (RNFL) photographs. The disc tilt degree was measured using a Heidelberg Retina Tomograph (HRT) III system. The en face OCT image of the disc scans was registered to the disc and RNFL photographs, to determine whether the focal LC defects corresponded spatially to the glaucomatous damage location. Results Eyes with far-peripheral LC defects were significantly myopic and had a higher disc ovality ratio. The disc tilt degree obtained by HRT revealed significant temporal disc tilt in eyes with temporal LC defects (Po0.001). Eyes with inferotemporal LC defects had a significantly larger discfoveal angle (P = 0.027). The inferotemporal LC defects corresponded to the location of glaucomatous damage in 81.6%; however, only 46.2% of eyes with a superotemporal LC defect and 3.2% of eyes with a temporal LC defect corresponded spatially with the glaucomatous damage location. Conclusions The clinical characteristics and association with glaucomatous damage location were different according to the location of focal LC defect.

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“…1 Eğik diskli gözlerde %9,1-11 oranında bildirilen fokal pigmenter değişiklikler ise RPE düzeyinde ve özgün olmayan karakterdedir. 23 Eğik diskli hastalarda; disk alanının küçük olması nedeni ile arteritik olmayan anterior iskemik optik nöropati gelişimine yatkın olduğu ileri sürül-müş, fakat bu hipotez henüz kanıtlanamamıştır. 24 Ayrıca, eğik diskli gözlerde santral retina arterinde kan dolaşımı ile ilgili değişikliklerin olduğu ve santral retina ven tıkanıklığının daha çok görül-mesinin sebebinin de optik disk başından damarların anormal şekilde çıkmasına bağlı olduğu bildirilmiştir.…”

Section: Kli̇ni̇k Bulgularunclassified