Electrodiagnostics of the tilted disc syndrome

Wijngaarde, R.; Lith, G. H. M. Van

doi:10.1007/bf00158021

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…Abnormalities of these electrofunctional tests were found in a minority of patients and were never serious, confirming the fact that changes of the fundus in the tilted disc syndrome, even though sometime extensive, are always of a localized nature. On the contrary the pattern visual evoked potential showed a very frequent increase of latency in confirmation of previous reports [2,10,16].…”

Section: Discussionsupporting

confidence: 78%

Chorioretinal degenerative changes in the tilted disc syndrome

Giuffrè

1991

Int Ophthalmol

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Ninety patients (163 eyes) with tilted disc syndrome were examined in order to show possible chorioretinal degenerative lesions associated with the typical ectasia of the infero-nasal fundus observed in this anomaly. Eighteen out of the 163 eyes had pigmentary accumulations, either branched, linear or dotted and five had roundish areas of chorioretinal atrophy. Furthermore, in 7 eyes areas of pigmentary atrophy at the posterior pole were observed. The most serious lesions were represented by macular choroidal neovascular membranes, seen in 3 eyes, which were responsible for the loss of vision in these eyes. A relationship was found between the depth of the ectasia, the degree of tilt of the optic disc and the development of chorioretinal degeneration. Because of possible complication by macular choroidal neovascularization, the tilted disc syndrome can not be regarded in every case as a benign and not evolutive ocular anomaly.

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Section: Discussionsupporting

confidence: 78%

Chorioretinal degenerative changes in the tilted disc syndrome

Giuffrè

1991

Int Ophthalmol

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“…[1][2][3][4][5][6] Changes in the pattern visual evoked response (PVER) in patients with and without visual field defects were recorded to find out whether asymmetric chiasmal decussation in addition to retinal coloboma-like lesions may account for these visual field defects. 5,7 The aim of our study was to search for a possible chiasmal decussation abnormality by performing PVER in both hemispheres of each eye.…”

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confidence: 99%

Chiasmal decussation in tilted disc syndrome PVER in tilted disc

Öztürk¹,

Kurt²,

Yoldaş

et al. 1999

Neuro-Ophthalmology

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The tilted disc syndrome is a benign congenital abnormality of the optic nerve head. Since it can be confused with papilledema and chiasmal lesions, differential diagnosis is important. The tilting anomaly may be associated with other abnormalities along the optic nerve. Visual field defects may be similar to those in chiasmal lesions. In order to determine whether the normal crossover of nerve fibers at the chiasm is altered, the crossed and the uncrossed fibers were investigated using the pattern visual evoked responses (PVER) test. Thirtyfour eyes of 17 patients diagnosed with tilted disc syndrome were evaluated for refraction, keratometry, color vision with Ishihara, visual field, and PVER. The presence of abnormal nerve fiber decussation was determined by recording PVER from the electrodes mounted on the scalp of both hemispheres. The amplitude and latency differences between the 'crossed' and 'uncrossed' fibers were not statistically significant (p>0.05). As a result, the tilting abnormality of papilla was found to be without chiasmal abnormal decussation.

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