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ASF Colour Blindness book
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The ASF Color Blindness Book (Ishihara Type) is a 38-plate diagnostic tool by Dr. Shinobu Ishihara for testing red-green color vision deficiencies. It features a red and green hardcover, comes boxed for protection, and provides quick, accurate color perception assessment.
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Description
The ASF Color Blindness Book is a standardized ophthalmic diagnostic tool designed to evaluate red-green color vision deficiencies in patients. Commonly known as the “Type Tests for Colour Blindness,” this book is based on the world-renowned Ishihara Test developed by Dr. Shinobu Ishihara of Tokyo, Japan. Containing 38 test plates, the book allows clinicians to quickly and accurately identify congenital or acquired color vision anomalies in both children and adults. It serves as an essential screening instrument in eye clinics, hospitals, and occupational vision assessments.Each plate within the book is printed with a pattern of colored dots that form numbers or paths distinguishable only by individuals with normal color perception. Patients with red-green deficiencies will be unable to identify certain figures, allowing for a precise evaluation of the type and degree of color blindness. The ASF Color Blindness Book is meticulously printed to ensure consistent color accuracy and contrast under standardized lighting conditions, ensuring reliable test results across different clinical environments.
The book features a durable red and green hardcover design and comes packaged in a protective box for long-term preservation. Compact, easy to handle, and clearly organized, it is both a professional-grade and user-friendly tool for ophthalmologists, optometrists, and vision screening technicians. Combining scientific reliability with simple administration, the ASF Color Blindness Book (Ishihara Type) remains one of the most trusted diagnostic references for color perception testing worldwide.
Specifications of ASF Colour Blindness book
| Shipping Weight | 0.3 kg |
| Shipping Dimensions | 19.1 × 15 × 19.1 cm |
| Type | Ophthalmic Diagnostic Book |
| Author | Dr. Shinobu Ishihara (Tokyo, Japan) |
| Plates Included | 38 Plates |
| Test Type | Red-Green Color Vision Deficiency |
| Cover Design | Red and Green Hard Cover |
| Operation | Manual Visual Test |
