Nichtorganische Störungen in der Ophthalmologie: Übersicht der Diagnostik und Therapie1

Mojon, Daniel S.; Schläpfer, Thomas

doi:10.1055/s-2001-15885

Cited by 12 publications

(12 citation statements)

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“…In clinical routine, we are frequently confronted with young patients in which we suspect a constricted visual field [1, 2]. Kinetic perimetry seems to be more sensitive in determining visual field abnormalities in the peripheral visual field than static perimetry [2].…”

Section: Discussionmentioning

confidence: 99%

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Normal Isopter Position in the Peripheral Visual Field in Goldmann Kinetic Perimetry

Niederhauser

Mojon²

2002

Ophthalmologica

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Purpose: Often in young patients the question arises if a disease state has contracted their peripheral boundary of the visual field. Since the ‘hill of vision’ is steeper in the periphery, kinetic perimetry is more sensitive in detecting peripheral visual field abnormalities than static perimetry. In order to be able with kinetic perimetry to detect mild peripheral visual field constrictions, we determined the normal position of 4 isopters in the peripheral visual field. Subjects and Methods: Intraindividual sensitivity variations of the isopters in the peripheral visual field were determined in 3 normal subjects by one perimetrist. Then, in 22 subjects (19–42 years old) the position of the isopters V4e, III4e, I4e and I3e has been determined by one perimetrist. Visual fields were registered using a Goldmann kinetic perimeter. Results: The intraindividual sensitivity variations (measured as 1 standard deviation) for the isopter V4e was 0.98° and for the isopter I4e 1.13°. To visualize the normal isopter positions in the peripheral visual field, the average positions ± 2 standard deviations were plotted for the isopters V4e, III4e, I4e and I3e. Conclusion: In this study, we determined the normal position of 4 isopters frequently used to plot the peripheral visual field. The plots have been printed in a scale of 1:4 in order to facilitate its use. Photocopying the figures on transparencies by scaling them with a factor 4 will allow to superpose the transparencies on individual Goldmann kinetic visual fields in order to easily determine whether the individual isopters are inside or outside the normal range.

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Section: Discussionmentioning

confidence: 99%

“…Frequent causes of a concentric visual field loss in young patients include retinal degenerative disease, optic neuropathies and nonorganic visual loss [1, 2]. In such cases, two techniques may be used to determine the visual field: static or kinetic perimetry [3].…”

Section: Introductionmentioning

confidence: 99%

Normal Isopter Position in the Peripheral Visual Field in Goldmann Kinetic Perimetry

Niederhauser

Mojon²

2002

Ophthalmologica

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“…While numerous tests have been developed for nonorganic visual acuity loss [10,11,12,13,14], only few tests exist for NVFL [4, 7]. For concentric NVFL, performing kinetic perimetry at two different distances is useful because it often helps to differentiate between organic and nonorganic origin.…”

Section: Discussionmentioning

confidence: 99%

“…It is then crucial to rule out any organic disease before making the diagnosis. However, extensive testing should be avoided to prevent a chronic course of the disease [7]. Compassion and reassurance are the cornerstone of treatment.…”

Section: Introductionmentioning

confidence: 99%

Stimulus Parameters for Goldmann Kinetic Perimetry in Nonorganic Visual Loss

Ebneter

Pellanda²,

Kunz³

et al. 2009

Ophthalmologica

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Objective: To investigate the influence of the stimulus parameters on perimetry at various distances and draw conclusions for the clinical exploration of nonorganic visual loss. Methods: Visual field testing using Goldmann kinetic perimetry was performed on 15 healthy volunteers. The I/1e isopter at 33 cm was compared to the I/1e, II/1e and I/2e isopters at 66 cm. The 0/1e isopter at 33 cm was compared to the 0/1e, I/1e and 0/2e isopters at 66 cm. Results: Doubling the examination distance without adjusting the stimulus parameters resulted in significant perimetric visual field constriction. Doubling the stimulus diameter resulted in perimetric visual field expansion by a factor of 2.26 and 3.32 for I/1e and 0/1e, respectively. Increasing stimulus luminance by a factor of 3.17 caused expansion by a factor of 2.15 and 2.32 for I/1e and 0/1e, respectively. Conclusions: To avoid falsely diagnosing visual field constriction, stimulus parameters need to be adjusted when visual field testing is performed at double distance. Increasing stimulus luminance was more appropriate than augmenting stimulus size.

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“…Zahlen über die Häufigkeit von Somatisierungsstörungen in der Augenheilkunde sind bis dato keine bekannt. Schät-zungen zu Folge leiden etwa 5 bis 10% der Patienten an psychogenen Störungen [2]. Zu den klassischen ophthalmologischen Konversionssymptomen zählen das Verschwommensehen, Gesichtsfelddefekte, Doppelbilder, willkürlicher Nystagmus, Augenschmerzen und die Ptosis.…”

Section: Diskussionunclassified

Konversionssyndrom bei Aderhautmelanom

Koch

Langmann

2006

Spektrum Augeheilkd

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Nichtorganische Störungen in der Ophthalmologie: Übersicht der Diagnostik und Therapie1

Abstract: An early diagnosis of nonorganic diseases is important, since a delayed diagnosis may worsen their prognosis.

Cited by 12 publications

References 2 publications

Normal Isopter Position in the Peripheral Visual Field in Goldmann Kinetic Perimetry

Normal Isopter Position in the Peripheral Visual Field in Goldmann Kinetic Perimetry

Stimulus Parameters for Goldmann Kinetic Perimetry in Nonorganic Visual Loss

Konversionssyndrom bei Aderhautmelanom

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