Heidelberg Edge Perimeter: The New Method of Perimetry

Kaczorowski, Kamil; Mulak, Małgorzata; Szumny, Dorota; Misiuk-Hojło, Marta

doi:10.17219/acem/43834

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…The full system of ZERK1 has been compared with the Heidelberg edge perimeter [ 4 , 8 , 22 ] and the artificial, preset map of the defects in the visual field. The selection of the Heidelberg Edge Perimeter resulted from the possibility of obtaining digital reference data concerning the measurement results.…”

Section: Discussion and Resultsmentioning

confidence: 99%

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Simplified automatic method for measuring the visual field using the perimeter ZERK 1

2016

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BackgroundCurrently available perimeters have limited capabilities of performing measurements of the visual field in children. In addition, they do not allow for fully automatic measurement even in adults. The patient in each case (in any type of perimeter) has at his disposal a button which he uses to indicate that he has seen a light stimulus. Such restrictions have been offset in the presented new perimeter ZERK 1.MethodsThe paper describes a new type of automated, computerized perimeter designed to test the visual field in children and adults. The new perimeter and proprietary software enable to carry out tests automatically (without the need to press any button). The presented full version of the perimeter has been tested on a head phantom. The next steps will involve clinical trials and a comparison with measurements obtained using other types of perimeters.ResultsThe perimeter ZERK 1 enables automatic measurement of the visual field in two axes (with a span of 870 mm and a depth of 525 mm) with an accuracy of not less than 1o (95 LEDs on each arm) at a typical position of the patient’s head. The measurement can be carried out in two modes: default/typical (lasting about 1 min), and accurate (lasting about 10 min). Compared with available and known types of perimeters, it has an open canopy, proprietary software and cameras tracking the eye movement, automatic control of fixation points, light stimuli with automatically preset light stimulus intensity in the following ranges: 550–700 mcd (red 620–630 nm), 1100–1400 mcd (green 515–530 nm), 200–400 mcd (blue 465–475 nm).ConclusionsThe paper presents a new approach to the construction of perimeters based on automatic tracking of the eye movements in response to stimuli. The unique construction of the perimeter and the software allow for its mobile use in the examination of children and bedridden patients.

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Section: Discussion and Resultsmentioning

confidence: 99%

“…Perimetry is a basic test associated with the quantitative evaluation of the visual field [ 1 – 3 ]. This is a subjective test [ 4 ]. Various factors influence its repeatability and reliability [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Simplified automatic method for measuring the visual field using the perimeter ZERK 1

2016

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“…The white-on-white 30–2 automated perimetry (SITA-Standard strategy) was performed using the Heidelberg Edge Perimeter (HEP; Heidelberg Engineering, Germany). HEP assesses the threshold of light sensitivity of a white point on a white background for all photoreceptor groups ( Kaczorowski et al, 2015 ).…”

Section: Methodsmentioning

confidence: 99%

Visual Perception in Expert Athletes: The Case of Rock Climbers

et al. 2022

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The purpose of the present study was to examine the visual perception system in expert climbers through a psychophysical optical test in a cross-sectional study. Twenty-seven male participants with an International Rock Climbing Research Association (IRCRA) best on-sight lead skill level ranging between 18 and 27 and a best red-point level ranging between 18 and 29 completed a series of psychophysical optic tests assessing their visual field, visual acuity, and contrast sensitivity. Climbers were divided by their best red-pointed lead level, and, following IRCRA recommendations, two groups were created: an advanced group (IRCRA redpoint level between 18 and 23), and an elite-high elite group (IRCRA redpoint level between 24 and 29). The elite group presented more training days per week (5.25 ± 1.28), best on-sighted lead level (24.63 ± 1.92 IRCRA), and best red-pointed lead level (26.63 ± 2.56 IRCRA) than the advanced group (3.67 ± 0.91 training days per week, 19.50 ± 1.04 IRCRA on-sighted level and 20.67 ± 1.57 IRCRA red-pointed level). Better visual perception outputs were produced by the group of elite climbers in visual field tests; no differences were observed between the two groups for visual acuity and contrast sensitivity tests. Overall, findings indicate that best climbers performed better at the visual perception tasks that tested their visual field. Such better perception from best climbers is discussed given (1) the greater time they spend coercing the visual system during practicing climbing and (2) the specific complexity of the stimuli as they are confronted to harder routes where holds are less perceptible and the time to find best hold sequences is constrained.

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“…Wielkie komórki zwojowe są także selektywnie pobudzane w perymetrze HEP (Heidelberg Edge Perimeter), w którym wykorzystano unikatowy bodziec FDF (flicker defined form), powstający przez nałożenie na siebie czarnych i białych kropek, co daje wrażenie nieostrego konturu. Ograniczeniami metody są trudność w zauważeniu bodźca i zmęczenie pacjenta migającym tłem, co wydłuża czas badania i ogranicza jego zastosowanie [14]. Na wykrywanie ubytków w wielkich komórkach zwojowych jest też nastawiona perymetria detekcji ruchu (MAP, motion automated perimetry), w której tło pokryte jest różnej wielkości kropkami, a pacjent ma za zadanie zaobaczenie i wykrycie ruchu kropek wewnątrz nieruchomego celu [13,15].…”

Section: Perymetriaunclassified

Extended glaucoma diagnostics

Mulak

2019

OphthaTherapy

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Rozpoznanie neuropatii jaskrowej opiera się na stwierdzeniu typowych zmian w obrazie tarczy nerwu II, polu widzenia oraz badaniach obrazowych. Koniecznymi elementami badania są także pomiar ciśnienia wewnątrzgałkowego tonometrem aplanacyjnym Goldmanna i wykonanie gonioskopii. W niejasnych przypadkach, np. jaskry przedperymetrycznej, jaskry normalnego (niskiego) ciśnienia, towarzyszącej wysokiej krótkowzroczności czy też trudnych do oceny atypowych tarcz (druzy, natarczowe włókna rdzenne), rutynowe badania mogą się okazać niewystarczające. W niniejszym artykule przedstawiono rzadziej stosowane metody diagnostyczne, które mogą być pomocne w ustaleniu rozpoznania i dalszym prowadzeniu pacjenta.

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Heidelberg Edge Perimeter: The New Method of Perimetry

Cited by 7 publications

References 14 publications

Simplified automatic method for measuring the visual field using the perimeter ZERK 1

Simplified automatic method for measuring the visual field using the perimeter ZERK 1

Visual Perception in Expert Athletes: The Case of Rock Climbers

Extended glaucoma diagnostics

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