Gima LANG-STEREOTEST I Parts list manual

LANG-STEREOTEST
M31294-M-Rev.3 - 07.16
Gima S.p.A. - Via Marconi, 1 - 20060 Gessate (MI) Italy
Italia: tel. [phone] - fax [phone]
Export: tel. [phone]/221/225 fax [phone]
[e-mail] - [e-mail]
www.gimaitaly.com
MANUALE DʼUSO EMANUTENZIONE
USE AND MAINTENANCEBOOK
INSTRUCTIONS DEFONCIONNEMENTET ENTRETIEN
BETRIEBS UND WARTUNGSANWEISUNGEN
MANUALDEUSO YMANTENIMIENTO
ATTENZIONE: Gli operatori devono leggere e capire completamente questo manuale
prima di utilizzare il prodotto.
ATTENTION: The operators must carefully read and completely understand the present
manual before using the product.
AVIS: Les opérateurs doivent lire et bien comprendre ce manuel avant dʼutiliser le produit.
ACHTUNG: Die Bediener müssen vorher dieses Handbuch gelesen und verstanden haben,
bevor sie das Produkt benutzen.
ATENCIÓN: Los operadores tienen que leer y entender completamente este manual antes
de utilizar el producto.
LANGSTEREOTEST AG
Fähnlibrunnenstrasse, 5
CH8700 Küsnacht  SWITZERLAND
31294 - 31295

4
ENGLISH
The LANG-STEREOTEST is an easy-to-use screening-test designed for early detection of
problemswithstereoscopicvisioninchildren.
Two versions of thetestplatesareavailable,whichdifferonlyaccording to the 3D objectsto be
recognized.
TheLANG-STEREOTESTI displays a star, a cat and a car, while the LANG-STEREOTESTII
displaysamoon, atruck andan elephant,each ofthemappearingonadifferentlevel.Inaddition,
theLANG-STEREOTESTII contains a star that can be seen with only oneeye.
Note: the LANG-STEREOTEST does not measure visual acuity and does not
substituteforanophthalmologicexamination.Anegativetest result indicates only a
lack of stereoscopic vision at the time of examination.
Examination of children:
1. Position yourself in front of the examinee, so that you can easily observe his/her eye
movements.
2. Show the test plate exactly at right angles at a distance of about 40 cm (16 inches).
3.Ask the child if he/she sees something on the plate and watch the searching movements of
his/hereyes.
4. When a 3D object has been detected, ask the child to look for additional objects and also to
describethem. Theexamineemay then alsopoint at thefiguresand shouldbeable to tellwhich
of them sticks out most.
Results:
1. Positive: Correct localization and naming of all hidden objects, typically jumping eye
movements from one object to the next. No further examination of stereoscopic vision is
needed.
2.Negative: no objectcan bedetected,endeyemovements alsodo notindicate therecognition
of the3D objects. Eyesare scannino thetest plateand then shiftaway from it. Refer family to
specialist for further examination of streoscopic vision and visual acuity.
3. Doubtful: only one hidden object is localized and named correctly, eyes are scanning the
platefor objects.
Refertospecialistfor further examination of stereoscopic vision and visual acuity.
Refining the examination:
1. The child already knows the correct results and might try to cheat. Use the test card
upside-down or use two tests, one
in the correct horizontal position, the other one in a vertical position in which the 3D objects
cannotbe detected.
Changebetween versions of LANG-STEREOTESTwhenretesting.
2.To confirm apositive result,askthepersontocloseoneeyewhilelookingatthestereoscopic
figures.Immediate disappearance of the figureswillbe noted.

5ENGLISH
Further recommendations:
1.Donot let the examinee hold the test card in order topreventflip-flop-movements.Thechild
maybe permitted however,
toadjusttothe best viewing position by small movements of the head.
2. Do not try to help the examinee by suggesting what he/she might recognize. Continue to
observethechild’s eye movements while performing the task.
3.Donotexpose the test card to heat or sunlight, which may cause deformation. If it has been
deformedconvexly,not all
3D objects may be seen simultaneously.
LANG-STEREOTEST I
Disparities:
Car:550”
Star:600”
Cat:1200”
LANG-STEREOTEST II
Disparities:
Moon:200”
Truck:400”
Elephant:600”
(Staralways visibile)