LCD Specification

22” Wide, Anti-Glare
1680×1050, 220 cd/m2
positive polarization technique with no ghost image and equal background

22” Wide, 1680×1050
positive polarization technique with no ghost image and equal background

17”, 1280×1024, 200 cd/m2 positive polarization technique

Testing distance

2-8m, step size: 5cm

2.9-6.1m, step size: 20cm

2.5-6m, step size: 50 cm

VA chart range (decimal)

0.03 to 2.0

0.05 to 2.0

0.04 to 2.0

Test list

Snellen, Sloan, Numbers, Tumbling E, Landolt C, HOTV, Allen pre-school, Children symbols, Children images, ETDRS, 2 CS charts, Spatial Frequency Contrast Sensitivity Test,Ishihara,  Stereoptic RG Images, Phoria H/V, Phoria with fixation H/V, Coincidence H/V, Red-Green, Astigmatism clock dial, Worth 4 dots, Schober, Duochrome balance, VA balance, Grids, Dots, Fixation, Amsler, Indicator, Double indicator,  Stereo triangle 11/20, Stereo valenz 11/20, Osterberg, Cross, Cowen.

Letters, Numbers, Tumbling E, Landolt C, 3 Children / Illiterate charts, ETDRS, Spatial Frequency Contrast Sensitivity Test, Schober, Worth 4 dots, H: Horizontal, V: Vertical, Duochrome balance,, Indicator, Double indicator, VA balance, Fixation disparity, Stereo triangle 11/20, Stereo valenz 11/20, ETDRS, Monocular R/G, Clock fan, Fan and Block, Astigmatism, Stereo test, Cross, Coincidence, Differential Stereo, Vertical and Horizontal OXO, Random dot (hand, stages), Cowen.

Letter, Number, Tumbling E, Landolt C, Children, Vertical and horizontal Coincidence, Cross grid, ETDRS, Astigmatism clock dial, Binocular balance, Cross grid, Dots, Duochrome balance, Fixation, Mallet, Muscle, Phoria, Phoria with fixation, Red-green, Schober, Stereo, Osterberg, Worth

Extra

Unlimited number of chart (all dynamic tests) , Schematic eye, Child movie, Tutorial movies, Slideshow and movie player

n.a.

Schematic eye, Slide Show

Connection

Remote control, USB, Bluetooth connection  to Automated Phoropter
Control Box

Remote control, USB, WiFi Automated phoropter
PC virtual remote control

Remote control, Control Box for Nidek RT-5100 refractor (via cable)

Hardware features

- All in one embedded computer , ad-hoc Linux O.S.
– CF memory card, fanless , 70 W
– tickness: 58mm
– two ambient light programs
– white madddox led

- Integrated PC, Windows XP embedded
– 120 W
– tickness: 58mm
– Light sensor
– white madddox led

- Integrated PC, CF memory card
– 100VA
– tickness: 69mm

Portable device

Yes. Smart Trolley (optional)

no

no

Upgrade policy

Free internet updates forever (1 update/year)

n.a.

n.a.

Lifetime warranty

5 years

2 years

2 years

Price

Strong competitive, low price

High price

High price

Red-Green, Schober, ETDRS, Contrast Sensitivity Test, Duochrome balance, Cross, Cross wth fixation, Astigmatism clock dial, Coincidence H/V, Grids,

Vertical and Horizontal letters, Muscle balance, minute stereo test, Single Fixation Dot. Snellen, Numbers, Tumbling E, HOTV, Allen Pictures, ETDRS, Worth 4 Dot, Single Fixation Dot, Astigmatic Dials and Fixation Disparity Snellen, Landolt C, Letters, Numbers, HOTV, ETDRS, Ishihara, 100 HUE, Schober, Worth 4 dot, Bichrom-Balance, Fixation Disparity, Coincidence H/V, AMD-Optotypes, Amsler, Contrast Sensitivity, Hands, Pictures, Symbols, 3D Images Extra Schematic eye, Child movie, Tutorial movies, Slide show and movie player Slide show Fixation Animation Hearing/Speaking impaired, Patient education, Animations, Miltimedia tool Test functions: Unlimited number of chart (all dynamic tests), Full randomization optotypes, Mirror view, RG duochrome on all charts, White optotypes on black background, Contrast function on all optotypes Mirror view, RG duochrome on all charts , Contrast function on all optotypes Full randomization optotypes, Mirror view, RG duochrome on all charts, White optotypes on black background, Unlimited munber of chart, Contrast function on all optotypes Connection Remote control, USB, Bluetooth connection to Automated Phoropter Control Box Remote control with Chart display window, Control Box for NIDEK RT-5100 Remote control, wireless LAN Remote control Hardware features - All in one embedded computer, ad-hoc Linux O.S.

- CF memory card, fanless, 60 W

- WxHxD: 41 x 34 x 5.8 cm

- 2 programs for different ambient lights

- adjustable auto power off

- stereo audio - CF memory card

- 100VA

- WxHxD: 50 x 55 x 3.8 cm

- adjustable background light - Standard PC: Intel Pentium 4, hard drive 80 GB

- Standard OP: Windows XP

- WxHxD: 41 x 35 x 9.6 cm

- stereo audio - Integrated PC

- less than 65W

- WxHxD: 44 x 37 x 12 cm

- adjustable auto power off Portable device Yes. Smart Trolley (optional) no n.a. n.a. Upgrade policy Free internet updates forever (1 update/year) n.a. n.a. n.a. Lifetime warranty 5 years 2 years 2 years 2 years Price Strong competitive, low price High price Medium-price ? High price ]]> http://visualacuitytesteyechart.com/715-competitors-comparison-chart.html/feed 0 http://visualacuitytesteyechart.com/666-remote-panel-vista-vision-lcd-chart.html http://visualacuitytesteyechart.com/666-remote-panel-vista-vision-lcd-chart.html#comments Mon, 14 Mar 2011 16:01:13 +0000 Dmd Medtech http://visualacuitytesteyechart.com/?p=666

The Remote Panel provide a perfect control of your VistaVision! With an high-tech and user-friendly touchscreen Interface your work will be easier for every task test.

• The professional way to interact to your Vistavision
• Direct control on all parameters of a test
• You can show a test to the patient without look directly to the chart panel
• This networking technology allows you to use multiple chart panels in the same examination room
• Simple and intuitive
• LCD 7-inch color Touchscreen (800×480)
• Work with an internal rechargeable battery
• Fast built-on and instant-off (Embedded Linux Operating System)
• Complete, precise and versatile software; programmable patient’s vision examination
• Long-life, up to date technology and strong competitive price!

Some example to control the chart panel:

• Touch screen interface offers great convenience for operation
• Just a touch on the screen to go directly to a specific test
• Graphical representation on screen guides test process in easy and fast mode
• Simple display sequences and improved tests navigation
• Simple masking buttons offers selection of a single letter, an horizontal or descending line
• Buttons and slider allows to control visual acuity and contrast
• Direct access to Polarisation Inversion, Red/Green and Black/White when available for the test
• One button to change the crowding on letters, numbers, symbols and pictures tests

GET THE BROCHURE HERE!

POLA VistaVision es un sistema avanzado de refracción que permite al profesional de la visión un control cuidadoso para una prescripción finalizada a producir la mejor interpretación visual binocular posible. La presentación en luz de ambiente normal de optotipos binoculares con polarización positiva (percibidos como negros sobre fondo blanco, como los optotipos monoculares) hace más naturales las respuestas del usuario en la presentación de los test, requisito fundamental para un control más cuidadoso de la calidad de la visión binocular.

El aparato se presenta como un monitor polarizado de tipo LCD a 22” wide screen antireflejos y con una luminancia calibrada, uniforme y certificada.

La reproducción del sonido es estereo. La separación de imagen, obtenida a través de las técnicas más innovativas de polarización, elimina totalmente las imágenes fantasma.

En su interior el sistema operativo Linux Embedded asegura una mejor estabilidad del software y los datos son memorizados en una memoria flash, para evitar la perdida o deterioro.

Una tarjeta electrónica, que consume solo 4W, asegura el calentamiento mínimo, el máximo silencio (sin ventiladores o partes móbiles) y duración de los componentes en el tiempo. Futuras actualizaciones de software podrán descargarse desde Internet y ejecutarse con una llave USB. Se puede montar en la pared o en una base rotativa.

Características funcionales
El software base, desarrollado gracias a la colaboración de oftalmólogos y optometristas, ha sido actualizado teniendo en cuenta las técnicas de refracción mas acreditadas.

Los test polarizados no requieren la aplicación de una pantalla adicional, en cuanto que es el monitor mismo polarizado. La polarización, además, puede ser invertida electrónicamente con un botón del mando a distancia.

POLA VistaVision es una unidad de refracción multiusuario:
esto significa que cada operador (hasta un máximo de 3) puede seleccionar los propios tipos de examen. Para cada operador son disponibles 4 tipos diferentes de examen: el examen convencional, del niño, examen con visibilidad reducida y un secuencia más individual: cada una de estos tipos de examen pueden ser personalizados para cada operador.

La distancia de examen puede configurarse entre 2 y 8 m (a paso de 5 cm) y los optotipos pueden ser presentados sea en visión directa o en visión indirecta (a través de un espejo). La luminancia de la pantalla puede ser configurada en el setup, en base a la luminosidad del ambiente, como alta o baja.

Optotipos monoculares, sin límites de presentación
El valor de la agudeza visual puede ser seleccionado entre una selección de 17 escalas (agudeza logarítmica decimal, de default, 20 ft, 6 m, /10, LogMar, etc.). Se preveen valores de agudeza visual comprendidos entre 0,03 y 1,6. Los optotipos pueden ser presentados como líneas de diferente agudeza visual con espaciación fija o proporcionalmente decreciente, como líneas de igual agudeza, como una sola línea horizontal o vertical o sólo como optotipos. Además, pueden presentarse funciones random y variaciones de contraste (13 diferentes niveles de contraste segun la escala LogSC). En todos es posible insertar un test bicromático.

Nuevos test para nuevas tipologías o secuencias de examen
POLA VistaVision incluye: un examen niño con test específicos, además de para la determinación de la agudeza visual, también para el balance de la refracción, para las forias y las producciones; un examen para visibilidad reducida que propone, además de los test de examen preliminar, las 3 tablas ETDRS para 1 o 2 m, los test para la determinación de la compensación esférica y cilindrica, los test de control de la visión binocular y de balance refractivo, aumentados oportunamente para una distancia de examen de 2 m, además test de control como los test de Amsler, las tablas pseudocromáticas, los test de sensibilidad de contraste. Por último, una secuencia específica para el control de la caliad de la visión binocular a través del método MKH (método de medida y corrección de Haase). Es una secuencia de test orientada a determinar una prescripción finalizada a producir una mejor interpretación visual binocular posible.

La ejecución del método MKH, según tal escuela, es de importancia fundamental sea para quien aplica rigorosamente los dictámenes de la escuela de Haase, sea para quien, crecido profesionalmente con una escuela diferente, prefiere proponer una variación calculada esférica y/o un ciclo de Visual Training en alternativa al prisma

Otros test…y no solo
POLA VistaVision incluye 15 test estéreo anaglíficos para efectuarse con gafas Rojo/Verde. Además, incluye algunos test de sensibilidad al contraste: uno de estos utiliza un procedimiento psico-física “secuencial” o “fast 2-1” que, considerando 144 estímulos, 3 inclinaciones randomizadas, 8 niveles de constraste, 6 niveles de frecuencia espaciales (entre 0.75 y 18 cicli/grado), determina el gráfico que puee ser exportado para una impresión sucesiva.

Incluye además las tablas pseudoisocromáticas de Isihara, compuesta de 25 tablas calibradas en luminosidad, contraste y saturación. La activación de la sesión MultiMedia permite la visión de un video instructivo de entretenimiento para niños, de algunas tablas explicativas sobre el ojo (anatomía, patologías, terapias) y de imágenes y videos personales (slideshow).

Opcional
Además, POLA VistaVision ofrece:
BlueKit, el kit de conexión wireless con el foróptero a través de BlueBox, BluePen y relativo software (disponible al momento para los siguientes forópteros: Huvitz CCP-3100; Indo eCP- 10; Potec PACP-6100; Unicos ACP-700, Huvitz HDR-7000)
Trolley, para un transporte seguro a otras sedes.

The performance in a normal light setting of the binocular optotype with positive polarization (black on white background, as the monocular optotypes) makes more true user’s answers under examination tests, essential requisite to carry out the most accurate check of the binocular vision quality.

The instrument consists of an LCD polarized monitor with a 22” antiglare wide screen and with calibrated, uniform and certified luminance. Stereo sound is available. Image separation, the outcome of the most innovative polarization techniques, completely removes ghost images. Linux Embedded System guarantees the best software stability and all the data are saved in a flash memory to avoid their lost or damages. Moreover, an electronic board, that consumes no more than 4W, ensures the lowest heating and the lowest noise, as well as the highest durability (without any fan or mobile tool). Regular software updates are available on-line, may be downloaded and executed through a USB flash drive, free of charge. Either wall assembly or on turntable are provided.

Features
The basic software, developed thanks to the cooperation of ophthalmologists and optometrists, has been further updated according to the most officially recognized refraction techniques.
In view of the fact that the monitor itself is polarized, polarized tests do not require any additional screen. Further, polarization may be electronically reversed, using the remote control.

POLA VistaVision is a multiuser refraction unity: hence, every user (up to a maximum of three) may select desired types of examination. Four types of examination are available for each user: conventional, child, low vision, individual. Every user may customize the desired type of examination.
Examination distance may be set up between 2 and 8 mt. (with a 5 cm step) and the optotypes may be displayed either in direct or indirect vision (through a mirror). The screen luminance may be set up, as high or low, according to the brightness of the setting.

Monocular optotypes, without limits of displaying.
Visual Acuity value may be selected among 17 scales (decimal logarithmic acuity, 20ft, 6m, /10, LogMar, etc.). Visual acuity values are available between 0,03 and 1,6. Optotypes may be displayed either as lines of different visual acuity with fixed or proportionally decreasing space, as lines of equal acuity, as single horizontal or vertical line, or as single optotypes. Moreover, random functions and variations in contrast may be performed (13 different levels according to LogSC scale). It is possible to add the red-green shape to all previous optotypes displays.

New tests for new examination types or sequences.
POLA VistaVision includes: a child examination provided with specific tests, not only for the estimation of the visual acuity, but also for the balance of refraction, phorias and ductions; a low vision examination that offers, in addition to the tests of preliminary examination, three EDTRS tables for 1 or 2 mt., the tests for the estimation of the spherical and cylindrical compensation, the tests to check the binocular vision and the balance of refraction, suitably enlarged for a 2mt. distance of examination, the Amsler tests, Ishihara color vision test, and Contrast Sensitivity tests. Finally, it is provided a specific sequence for the check of binocular vision quality trough MKH methodology (Haase evaluation and correction method).
This is a sequence of tests aimed at determine the prescription to obtain the best performances in the binocular vision.
“MKH methodology consists of specific polarized tests with peripheral, paracentral or central fusional stimuli which are seen by both eyes, while, on the contrary, other particular tests are seen by each eye separately and cannot be merged.
The MKH investigates on angular ametropia, a normal binocular vision status, (associated to the fusion and not dissociated, by prism i.e.), that occurs with a lateral error of image position in order to reduce the energy consumes. While heterophoria represents an artificial condition owing to the break of the fusional stimulus (dissociate phoria), in the natural condition the visual system uses a proportional compensation of the error of the image position (associated phoria).
MKH method, estimating the value of the associated phoria, let obtain a complete correction of the angular ametropia through an optical binocular prescription, or prismatic, if necessary, in order to accomplish a perfect bifoveale vision with the highest stereopsis value. According to this school of thought, performing the MKH method is of great importance either for those who apply strictly the dictates of Haase school or for those who, even though professionally grown in another school of thought, prefer to propose a calculated spherical version and/or a cycle of Visual Training, as an alternative to the prism test.

Other tests,…and even more
POLA VistaVision also consists of 15 stereo anaglyphic tests to be performed with Red/Green glasses. Moreover, it includes several contrast sensitivity tests, one of those uses a psycho-physical sequential procedure, or “fast 2-1”, that reproduces in a graphic the findings of 144 stimuli, 3 random inclinations, 8 contrast levels, 6 spacial frequences levels (between 0.75 and 18 cycles/grades). A printable version of this graphic is available.
Finally, Ishihara tables, consisting of 25 tables calibrated as regards luminance, contrast and saturation. Multimedia windows let to access to an instructive cartoon for children, to display some tables explaining eye anatomy, diseases and therapies and to display some personal images and movies (slideshow).

Optional
In addition, POLA VistaVision offers BlueKit, a wireless connection kit to the digital phoropter (now available for the following refraction systems: Huvitz HDR-7000, Huvitz CDR-3100, Indo eDR-10, Potec PAV-6100 and Unicos UDR-700) and PolaTrolley, granting a safe transport everywhere.

The product comes with a five-year warranty. It is possible to generate all optotypes with positive polarization without including any additional items. This exceptional device comes with software which makes its functioning all the more versatile. It is possible for professionals to program patient’s vision examination. Moreover, one also gets free Internet upgrade software.

Pola Vista Vision is an anti-glare LCD chart system. With positive polarization technique, it allows generation of optotypes without any additional items. It has 100 percent separation and equal background. You can easily create image separation by using the best and most improved polarization technique that eliminates ghost images. The 22-inch LCD anti-glare widescreen (1680×1050) has been calibrated with constant certified luminance.

This exceptional electromedical instrument can be mounted on the wall and it is completely portable. Moreover, this device does not create any sound as it does not have fan. The system of these electromedical instruments is computer-integrated and it contains a fast built-on and instant-off embedded Linux operating system. It is possible to carry out dynamic tests that are based on distance and other parameters.

Another advantage of using Pola Vista Vision chart system is that all letters chart with random and contrast sensitivity function. The software helps in fast acuity evaluation. Whenever you want to upgrade software, you can do it free of cost using a USB key. The company also offers a strong competitive price along with guaranteed long-life and up-to-date technology. It is cheaper than the competitors’ same level products.

The smart functioning of Pola Vista Vision LCD chart system makes it the most preferred one among the electromedical instruments. All the tests can be done by using just three remote control keys. The luminance level of the monitor can also be adjusted. Two preselected background luminance levels are present for normal or darkroom. As mentioned before, it has a stylish design and can be an asset to the room. The software which is used to run the device is available in Spanish, English, French, and Italian. Pola Vista Vision LCD chart system has CE classification and it is a good Class I medical device. The system has also been approved by FDA.

Contact:

Marco Bertolino
DMD Med Tech s.r.l. 
via Monviso 14 
10090 Villarbasse TORINO ITALY
Phone: +39.011.952.8282

ETDRS stands for Early Treatment Diabetic Retinopathy Study. The ETDRS test is designed to eliminate inaccuracies in the Snellen and Sloan tests.

The ETDRS acuity test was developed to aid in evaluating the changes in vision following panretinal photocoagulation in patients with diabetic retinopathy.

Previous studies had somewhat confusing results due to inadequacies of the acuity tests used in those early studies. For example, the Snellen acuity test has a different number of letters per row, e.g. 10 letters on the 20/20 line, but only 3 letters on the 20/70 line.

Therefore, if the results of a study showed that the patients “gained three letters of acuity,” the results could indicate the gain of a full acuity line, as in the 20/70 line, or only a portion of an acuity line, as in the 20/20 line.

Also, the individual lines on the Snellen acuity test are not equally spaced. For example, the change from the 20/25 line to the 20/20 line is a 20% change, while the change from the 20/30 line to the 20/25 line is a 16% change.

Again, referring back to the diabetic studies, if a study demonstrated a two line increase in acuity, it could mean a 33% improvement from 20/30 to 20/20, or a 40% improvement from 20/50 to 20/30. These inadequacies of the Snellen acuity test made it impossible to properly evaluate the acuity data and to compare data from study to study.

The ETDRS test incorporates specific design criteria to make it more accurate than the Snellen or Sloan acuity tests. These include:

• Same number of letters per row (5)
• Equal spacing of the rows on a log scale
• Equal spacing of the letters on a log scale
• Individual rows balanced for letter difficulty

To prevent memorization, different versions of the ETDRS test chart are available. The three standard versions of the ETDRS chart are R, 1 and 2.

For eye care professionals now are available the outstanding LCD Chart systems: unique solutions for both monocular and binocular tests.

The person being tested stands 20 feet from the chart and reads as many of the symbols as possible, reading each line and proceeding downward from the top.

A score is assigned in the form of a ratio, comparing the subject’s performance to that of a statistically normal subject’s performance. For example, a person who can read at 20 feet what the average person can read at this distance has 20/20 vision, whereas a person who can read at 20 feet what the average person can read at 40 feet has 20/40 vision.

Only the ten Sloan letters C, D, E, F, L, N, O, P, T, Z are used in the traditional Snellen chart. The perception of five out of six letters (or similar ratio) is judged to be the Snellen fraction.

The evolution of letter charts from Snellen’s original chart to the ETDRS chart, which is considered today’s gold standard, push practitioners and researchers from all parts of the world turn to ETDRS charts and other high-quality vision testing tools. Now are available the LCD Chart systems: unique solutions for both monocular and binocular tests.

So far as we know, available contrast sensitivity tests are performed by means of paper-made screens or backlighted windows and do not employ a psychophysical procedure to assess the exact threshold value for every tested spatial frequency.

The new VistaVision Contrast Sensibility Test© (DMD Med Tech, Turin, Italy) is a computer-based psychophysical tool, using a particular staircase procedure to fit the psychometric function.

The exam evaluates spatial frequency ranging from 0.75 c/deg to 18 c/deg, widely covering the values processed by the magnocellular (under 1.3-2 c/deg, according to Legge,1978) and parvocellular ganglionar pathway.

Within this range, the VistaVision evaluates contrast sensitivity across six different spatial frequency values (0.75, 1.5, 3, 6, 12, 18 c/deg). Test distance is 3 meters. Subjects are presented sinewave gratings (mean luminance 120 cd/m2) in random order, each oriented along the vertical or tilted left/right side and are asked to report the orientation of the displayed grating by a remote control. For each spatial frequency value, threshold level is obtained by a 4-2 staircase procedure.

The difference between VV function and a 3-forced choice paradigm (3AFC) relies on the further possibility to answer “null” by clicking an appropriate button.
X normal subjects aged x year (±y) were recruited. Inclusion criteria were BVCA: 60/60, ametropy <±3 diopters, absence of ophthalmological and systemic diseases.

Exclusion criteria were intraocular pressure higher than 17 mm Hg (G) or inheritance for glaucoma, strabismus, amblyopia, diabetes, systemic therapies able to induce visual field defects, cognitive disability and bad collaboration. The exam was performed monocularly.
Every patient showed foveal fixation as tested by Cuppers’ visuscope. 
An high correspondence both in the shape and in the relative threshold values is found between the obtained spatial contrast sensitivity function and the reference one. To account for any age effect, a correlation analysis has been performed by Pearson test. A negative significant correlation is found between age and contrast sensitivity above 12 c/deg.

The question arises if this correlation may be accounted simply for the mild age-dependent reduction of the media transparencies.
To investigate this point, the correlation of the two higher spatial frequencies tested has been compared. Indeed, since ocular media light absorption is proportional to the age and mainly the higher frequencies are affected, then an higher correlation with the 18 c/deg as compared to the 12 c/deg is expected to occur.

Actually, it was not the case and the age-spatial frequency correlation resulted to be stronger for 12 c/deg than for 18 c/deg. This suggests that media changes due to ageing account for the CS decrease mainly at high spatial frequencies whereas other factors, namely the retinal tissue involution, would affect contrast sensitivity at lower spatial frequencies.
In any case an ageing effect seems to worsen contrast sensitivity for spatial frequencies above 6c/deg.

In conclusion, VistaVision contrast sensitivity test is a fast, precise and reliable device to assess this function in ophthalmological and neurophthalmological field. Mean examination duration resulted to be less than 2 minutes per eye, and test-retest variability was negligible. 
The obtained psychometric curve fits well in shape and values with data reported in literature and has the advantage to examine a wider range of frequencies compared to the other current instruments. Consistently with previous studies, contrast sensitivity decreases as a function of age at the higher tested frequencies.

Carlo Aleci, MD, PhD
Ophthalmology Department, The Gradenigo Hospital, Turin, Italy
carlo.aleci@gradenigo.it

We suggest to personalize the medical examination to the patient for the child, for the adult and for the elderly people, in order to carry out the examination to the patient as quick as possible.

Open the SETUP window and enter in the VISIT EXAMINATION window: in this window, it is possible to personalize the left column, central column and right column list of tests according to the kind of examination.

Press the CHANGE key in order to choose the kind of child examination and it will appear the lists of tests entered until that moment for this kind of examination: the adult examination with its tests, the elderly person examination even it with its linked tests.

After having personalized the medical examination to the patient according to your preferences, press the menu key in order to start the examination according to the patient to test.
The kind of visit appears on the top side of the page, near the selected test.

In order to carry out the medical examination to the patient, you can move the selection and press the CHANGE key to start the test. Press the TEST key to return to the previous window or to use the three linked yellow keys:

to the left column the yellow key one, to the central column the yellow key two, to the right column the yellow key three.