Key benefits Provides a quick and reliable color vision screening by leveraging the brightness difference between blue/yellow and red/green in red green color vision deficiency. Offers a simple, accurate method to detect congenital color blindness and red green color blindness. Uses test boards with a circle of randomly colored and sized dots; patterns (numbers or shapes) are visible to normal color vision but hidden or hard to see for red green deficiency, or vice versa. Suitable for a range of settings, enabling efficient screening for color blindness and weak blindness in routine practice. Product features and details Test principle Uses the characteristic that blue and yellow appear brighter than red and green to assess color vision status, aiding detection of red green color vision deficiencies. Professional test book A simple and accurate method designed to detect congenital color blindness and red green color blindness. Structured for quick administration and clear interpretation by professionals. Test board Each board presents a circle composed of dots with random colors and sizes. Within the pattern there are dots that form numbers or shapes that are clearly visible to people with normal color vision but may be invisible or difficult to discern for those with red green color vision deficiency, and vice versa. Wide application Suitable for major optical stores, vision care centers, hospitals, and optometry training centers. Effective for detecting color blindness and weak blindness in a variety of clinical and educational contexts. 2 3 use scenarios Routine clinical screening In optometry clinics or vision care centers, use the test book and boards as part of a standard eye examination to screen for color vision deficiencies during patient intake or pre surgical assessments. Workplace or safety screening Employ in settings where color vision is relevant to job performance (for example, clinical facilities or environments requiring color discernment) to identify individuals who may need accommodations or further evaluation. Education and training Utilize in optometry or ophthalmology training centers to teach students how to administer color vision tests, interpret results, and explain findings to patients. Useful for practical demonstrations and examinations. Notes The description preserves the brand's emphasis on color vision testing using distinct dot patterns and the detection of both congenital color blindness and red green color deficiencies. The content focuses on the described features and their clinical and educational applications without introducing specifications or unsupported claims.