{"title":"Visual function test","description":"","products":[{"product_id":"tavole-ishihara-10-tavole","title":"Ishihara Plates - 10 Plates","description":"\u003cp\u003e\u003cstrong\u003eA series of plates designed to provide a quick and accurate test for determining congenital color vision deficiency, the most common form of color vision disorder.\u003c\/strong\u003e \u003cbr\u003eThe examination of color sense is performed by discriminating the different colors of the background and the signs10a. \u003cbr\u003eIshihara plates are used for the diagnosis of dyschromatopsia, in optic neuropathies, and congenital or acquired maculopathies.\u003cbr\u003e\u003cbr\u003e10a: the different colors are located on the same confusion line. They detect:\u003cbr\u003e- Protanopia (red): The visible range of the spectrum in red is shorter than normal, and the part of the spectrum that normally appears blue-green appears gray to those affected by protanopia.\u003cbr\u003e- Deuteranopia (green): The part of the spectrum that appears green to those with normal vision appears gray, and the visible range of the spectrum is divided by this zone into two areas, each of which appears different. The visible range of the spectrum is not contracted, in contrast to protanopia. Red-purple, the complementary color of green, also appears gray.\u003cbr\u003e\u003cbr\u003eIn acquired forms of color vision deficiency, protanopia and deuteranopia are indicative of optic neuropathy.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eUsing the plates:\u003c\/strong\u003e\u003cbr\u003eThe examination can be performed indoors with natural lighting of more than 300 lux.\u003cbr\u003eWhen it is necessary to use electric light, although not desirable, the lighting must be adjusted to simulate natural light as much as possible.\u003cbr\u003eLocations next to grounds with green trees or areas influenced by bright colors should be avoided, as they could produce certain discrepancies in the results.\u003cbr\u003e\u003cbr\u003eThe plates must be held at a distance of 50\/75 cm from the subject being examined.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFirst examination:\u003c\/strong\u003e\u003cbr\u003eThe first examination is performed by showing two geometric figures, a circle and a square, respectively. \u003cbr\u003eBefore starting the examination, it is important that the subject fully understands what they are being asked to do, namely to recognize them. Plates 1 and 2 will be used for this purpose.\u003cbr\u003ePlates 3 and 4, in black and white, will be used only if the subject shows difficulty in recognizing plates 1 and 2, as the black background facilitates their identification.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSecond examination:\u003c\/strong\u003e\u003cbr\u003eThe second examination is performed by presenting the subject with plates featuring curved lines, specifically numbers 6, 7, and 8. In this case, it is important to take care to keep the plates being examined at the proper distance, at least 50 cm.\u003cbr\u003e\u003cbr\u003e⚠️\u003cem\u003e\u003cstrong\u003eThe 2019 and 2024 editions are identical in all material – contents, plates, and charts – and differ exclusively in the year of production indicated.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Gima","offers":[{"title":"Default Title","offer_id":49646158250320,"sku":"DG0004682","price":76.3,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/3996\/8592\/files\/TavoleIshihara-10Tavole.png?v=1765529142"},{"product_id":"tavole-ishihara-38-tavole","title":"Ishihara Plates - 38 Plates","description":"\u003cp\u003e\u003cstrong\u003eSeries of plates designed to provide a quick and accurate test for the determination of congenital color vision deficiency, the most common form of color vision disorder.\u003cbr\u003e\u003c\/strong\u003eIshihara plates are generally used for the detection of color blindness and achromatopsia. This consists of 38 plates contained in a book with black-background pages, filled with circles of different colors but the same brightness. \u003cbr\u003eThey feature numbers, paths to be followed with a pencil for children or illiterate individuals, and confusion plates, where only those with altered color vision can see numbers. \u003cbr\u003eThese plates are useful for diagnosing congenital color vision defects, especially for the red\/green axis.\u003cbr\u003eThey should be read at a reading distance of 30-40 cm, with near correction for some subjects, and under adequate lighting. \u003cbr\u003eThe test can be performed both monocularly and binocularly.\u003cbr\u003e\u003cbr\u003eThe examination of the chromatic sense occurs through the discrimination of colors different from the background and the 10a signs. \u003cbr\u003eIshihara plates are used for the diagnosis of dyschromatopsia, in optic neuropathies, and in congenital or acquired maculopathies.\u003cbr\u003e\u003cbr\u003e10a: the different colors are located on the same confusion line. They detect:\u003cbr\u003e- \u003cspan style=\"text-decoration: underline;\"\u003eProtanopia (red)\u003c\/span\u003e: The visible range of the spectrum in the red is shorter than normal, and the part of the spectrum that appears blue-green to a normal observer appears gray to those affected by protanopia.\u003cbr\u003e- \u003cspan style=\"text-decoration: underline;\"\u003eDeuteranopia (green)\u003c\/span\u003e: The part of the spectrum that appears green to those with normal vision appears gray, and the visible range of the spectrum is divided by this zone into two areas, each of which appears different. The visible range of the spectrum is not contracted, in contrast to protanopia. Red-purple, the complementary color of green, also appears gray.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical specifications:\u003cbr\u003e\u003c\/strong\u003e\u003cspan style=\"text-decoration: underline;\"\u003ePlate details:\u003c\/span\u003e\u003cbr\u003e- The first plate contains the number 12 and is not pseudoisochromatic. It serves to demonstrate the test and is read even by those with poor color vision.\u003cbr\u003e- From plate 2 to plate 17, the numbers are read poorly or not at all by those with color vision anomalies in the red\/green axis.\u003cbr\u003e- Plates 18-21 do not contain numbers, which are instead read by those with a red\/green deficiency.\u003cbr\u003e- Plates 22-25 are the most interesting, as they allow for distinguishing true color blindness (protanopia or deuteranopia depending on whether it is for red or green) from partial blindness (protanomaly or deuteranomaly).\u003cbr\u003e- From plate 27 to 38, the numbers are replaced by paths for illiterate individuals, with the same significance as reading the numbers.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSupplied with:\u003c\/strong\u003e\u003cbr\u003e21 Numerical plates\u003cbr\u003e17 Plates featuring paths to be followed with a pencil and confusion plates\u003cbr\u003e\u003cbr\u003e⚠️\u003cstrong\u003e\u003cem\u003eThe 2019 and 2024 editions are identical in all material – contents, plates, and charts – and differ exclusively in the year of production shown.\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Gima","offers":[{"title":"Default Title","offer_id":49646159823184,"sku":"DG0004681","price":137.2,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/3996\/8592\/files\/DG0004681.png?v=1765528892"},{"product_id":"tavole-ishihara-24-tavole","title":"Ishihara Plates - 24 Plates","description":"\u003cp\u003e\u003cstrong\u003eSeries of plates designed to provide a fast and accurate test for the determination of congenital color vision deficiency, the most common form of color vision disorder. \u003cbr\u003e\u003c\/strong\u003eThe chromatic sense examination is performed by discriminating the different colors of the background and the signs10a. \u003cbr\u003eIshihara plates are used for the diagnosis of dyschromatopsia, in optic neuropathies, and in congenital or acquired maculopathies.\u003cbr\u003e\u003cbr\u003e10a: the different colors are located on the same confusion line. They detect:\u003cbr\u003e- Protanopia (red): The visible range of the red spectrum is shorter than normal, and the part of the spectrum that normally appears blue-green appears gray to those affected by protanopia.\u003cbr\u003e- Deuteranopia (green): The part of the spectrum that appears green to those with normal vision appears gray, and the visible range of the spectrum is divided by this zone into two areas, each of which appears different. The visible range of the spectrum is not contracted, in contrast to protanopia. \u003cbr\u003eRed-purple, the complementary color of green, also appears gray.\u003cbr\u003e\u003cbr\u003eIn acquired forms of color vision deficiency, protanopia and deuteranopia are indicative of optic neuropathy.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstructions for use:\u003cbr\u003e\u003c\/strong\u003eIshihara plates are designed to be used in an environment adequately illuminated by sunlight.\u003cbr\u003eThe introduction of direct sunlight or the use of electric light could produce a discrepancy in the results due to an alteration in the appearance of color shades.\u003cbr\u003eIf electric light is used, it must be adjusted so as to recreate natural light as closely as possible.\u003cbr\u003e\u003cbr\u003eThe plates must be held 75 cm from the subject being examined; the correct position of each plate is indicated by the number printed on the back of the plate.\u003cbr\u003eThe numbers displayed on plates 1 through 17 are predetermined, and each answer must be given within 3 seconds. If the subject is unable to read the numbers, plates 18 through 24 must be used.\u003cbr\u003eIn all examination cases, it is not necessary to use the complete series of plates. \u003cbr\u003ePlates 16 and 17 may be skipped if the test is carried out exclusively to separate color defects from those of a normal color evaluation.\u003cbr\u003e\u003cbr\u003eIt may be necessary to vary the order of the plates in case of suspected intentional deception by the subject.\u003cbr\u003e\u003cbr\u003e⚠️\u003cem\u003e\u003cstrong\u003eThe 2019 and 2024 editions are identical in all material – contents, plates, and charts – and differ exclusively in the year of production shown.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Gima","offers":[{"title":"Default Title","offer_id":49647193030992,"sku":"DG0002726","price":122.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/3996\/8592\/files\/TavoleIshihara-24Tavole.png?v=1765528693"},{"product_id":"test-daltonismo-adulti-15-tavole-nuovi-numeri","title":"Adult Color Blindness Test - 15 plates (new numbers)","description":"\u003cp\u003e\u003cstrong\u003eColor blindness test plates are designed to provide a rapid and accurate testing tool for congenital color blindness.\u003c\/strong\u003e \u003cbr\u003eMost cases of congenital color blindness are characterized by a red-green deficiency.\u003c\/p\u003e\n\u003cp\u003eThe plates are designed to be used in an environment properly illuminated by daylight. Direct sunlight or the use of artificial light may produce some discrepancies in the results due to alterations in color shades. When it is necessary to use artificial light, it should be adjusted where possible to reproduce natural light as closely as possible.\u003c\/p\u003e\n\u003cp\u003eThe plates should be held at a distance of approximately 70 cm from the subject and tilted so that they are perpendicular to the line of vision. The numbers or symbols represented on the plates are predetermined, and each answer must be provided by the subject in no more than three seconds. It is not necessary to use the entire series of plates in all cases.\u003c\/p\u003e\n\u003cp\u003ePlates (11.5x11 cm) individually packaged in a practical cardboard box (13.5x11.5x2.3 cm).\u003c\/p\u003e","brand":"Gima","offers":[{"title":"Default Title","offer_id":49811010027856,"sku":"DG14079","price":19.94,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/3996\/8592\/files\/31288.jpg?v=1740021973"},{"product_id":"stereotest-lang-i-r","title":"Lang-I-R Stereotest","description":"\u003cp\u003e\u003cstrong\u003eStereopsis evaluation test, extremely useful in the diagnosis of strabismus. The LANG STEREOTEST® I-R represents the current gold standard for random-dot stereotests, requiring no 3D glasses and offering high sensitivity and specificity for stereopsis. It displays three stereograms with disparities of 1200, 600, and 400 arcsec.\u003cbr\u003e\u003c\/strong\u003eThis test, designed to facilitate the examination of stereoscopic vision in children, is based on two principles: random dots and a grid of parallel cylindrical lenses.\u003cbr\u003eIn monocular vision, these stereograms reveal no outlines, whereas in binocular vision, the areas that produce horizontal disparity are seen in relief.\u003cbr\u003eThe examination combines random dots and a lens grid and is designed for rapid binocular vision screening across all age groups, including very young children. The card is presented at reading distance and the patient is asked what they see, while eye movements are observed.\u003c\/p\u003e\n\u003cp\u003eGiven that the test is most often performed on children, object shapes that are usually well-known from an early age have been chosen.\u003cbr\u003eThe three objects (cat, star, and car), all visible only stereoscopically with both eyes, are seen on different planes: the cat appears closer to the observer and the car further away. Children usually pass the test more easily than adults, for whom initial presbyopia, combined with convergence insufficiency, can cause difficulties.\u003c\/p\u003e\n\u003cp\u003eMDR 2017\/745 compliance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical specifications:\u003c\/strong\u003e\u003cbr\u003eThe examination can be performed after the first year of age\u003cbr\u003eEvaluates the direct and consensual pupillary light reflex\u003c\/p\u003e","brand":"Gima","offers":[{"title":"Default Title","offer_id":49811014025552,"sku":"DG14080","price":350.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/3996\/8592\/files\/31312.jpg?v=1740021997"},{"product_id":"stereotest-lang-ii-r","title":"Lang II-R Stereotest","description":"\u003cp\u003e\u003cstrong\u003eStereopsis evaluation test, thus extremely useful in the diagnosis of strabismus. This test, intended to facilitate the examination of stereoscopic sense in children, is based on two principles: random dots and a grid of parallel cylindrical lenses. The Lang II-R Stereotest represents a development and completion of the previous Lang I-R Stereotest (cat, car, star). This test is also based on the same optical principles for examining binocular vision.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe examination combines random dots and a lens grid and is designed for rapid screening of binocular vision in all age groups, including very young children. The card is presented at a reading distance and the patient is asked what they see while their eye movements are observed.\u003c\/p\u003e\n\u003cp\u003eFour images are presented: elephant, car, crescent moon, and star.\u003cbr\u003eThe elephant, car, and crescent moon are visible only in binocular vision; the star, however, can be seen with one eye and is always visible; it can be perceived in both monocular vision and normal binocular vision, in which case it appears in relief.\u003cbr\u003eSince the star is always visible regardless of stereopsis, if it is not perceived, there are problems other than stereopsis, providing the doctor with additional information that the Lang 1 Test cannot offer.\u003c\/p\u003e\n\u003cp\u003eMany ophthalmologists and orthoptists who use the Lang Stereo Test I-R wish to have another test available, based on the same principle, to avoid the problems resulting from the memorization of figures.\u003c\/p\u003e\n\u003cp\u003eThe star, visible in monocular vision, serves to attract the attention of younger patients, but also provides the satisfaction of recognizing at least one figure even to subjects who do not have stereoscopic vision.\u003c\/p\u003e\n\u003cp\u003eMDR 2017\/745 compliance.\u003c\/p\u003e","brand":"Gima","offers":[{"title":"Default Title","offer_id":49811018056016,"sku":"DG14081","price":350.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/3996\/8592\/files\/31314.jpg?v=1740022025"},{"product_id":"test-per-la-sensibilita-al-contrasto-da-vicino-40-cm","title":"Near contrast sensitivity test - 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