Snellen Eye Chart, Red and Green Bar Visual Acuity Test, 20 Foot Test Distance
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Snellen Eye Chart, Red and Green Bar Visual Acuity Test, 20 Foot Test Distance
This Snellen 20' test distance eye chart is trusted worldwide for its accurate acuity vision testing using true Snellen optotypes, and also features red and green color bars for color vision testing.
Snellen Eye Chart, Red and Green Bar Visual Acuity Test, 20 Foot Test Distance
商品＃: 33488403

Snellen Eye Chart, Red and Green Bar Visual Acuity Test, 20 Foot Test Distance

商品＃: 33488403

TWD 1029

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立即訂購並活動它 週四, 八月 27
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This Snellen 20' test distance eye chart is trusted worldwide for its accurate acuity vision testing using true Snellen optotypes, and also features red and green color bars for color vision testing.
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What Stands Out

High Contrast Design
The Snellen Eye Chart features red and green bars for clear visibility and easy discrimination, enhancing the testing process for patients and practitioners alike.
Standard 20 Foot Distance
Designed for accuracy, this eye chart allows testing from a standard 20-foot distance, ensuring reliable assessments in line with conventional eye examination practices.
Durable Material
Constructed from high-quality materials, this eye chart withstands regular use in clinical settings, providing durability and longevity for healthcare professionals.

產品詳情

Shop Snellen Eye Chart, Red and Green Bar Visual Acuity Test, 20 Foot Test Distance online at a best price in Taiwan. B07C1TGX37
  • Snellen eye chart for 20 foot test distance
  • Includes red and green color bars for color vision testing
  • Made of durable high impact polystyrene material
  • Physical size of 17x11 inches with optional wall mounting
  • Uses true Snellen optotypes for acuity vision testing
  • Great for school vision screenings and compatible with specific illuminator cabinets
Package Weight1.0000 Pound

Who Should Buy?

Suitable For
  • Eye Care Clinics

    Ideal for optometrists and ophthalmologists testing patients' visual acuity during regular eye examinations.

  • Educational Institutions

    Suitable for schools conducting vision screenings to ensure students have adequate visual capabilities for learning.

  • Home Use

    Beneficial for individuals wanting to monitor their own vision over time in a convenient home setting.

Not Suitable For
  • Professional Sports Training

    Athletes requiring specialized vision assessments may need more advanced assessments than standard eye charts.

產品描述

Snellen Eye Chart, Red and Green Bar Visual Acuity Test, 20 Foot Test Distance

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客戶問題與解答

  • 問題: What is a Snellen Eye Chart and how is it used?

    Answer: A Snellen Eye Chart is a standardized measurement tool used to evaluate visual acuity. It consists of rows of letters that decrease in size, allowing eye care professionals to assess how well a person can see at a distance. Typically, the chart is viewed from 20 feet away, which is considered a standardized test distance. This tool is essential in eye exams to diagnose vision problems and determine the appropriate corrective measures.
  • 問題: What is the purpose of the Red and Green Bar Visual Acuity Test?

    Answer: The Red and Green Bar Visual Acuity Test is designed to assess color vision and contrast sensitivity in addition to standard visual acuity. The test uses colored bars alongside the Snellen letters, which helps identify specific visual impairments. This dual-functionality is critical for comprehensive vision examinations, particularly in cases where color discrimination is essential, such as for pilots or graphic designers.
  • 問題: Who should use the Snellen Eye Chart?

    Answer: The Snellen Eye Chart is suitable for a wide range of individuals, including children and adults undergoing routine eye exams. It is commonly used by optometrists and ophthalmologists to diagnose refractive errors like myopia or hyperopia. Additionally, schools and workplaces might use the chart to meet vision check compliance, ensuring that everyone meets minimum vision standards necessary for tasks like driving or operating machinery.
  • 問題: How accurate is the Snellen Eye Chart in measuring visual acuity?

    Answer: The accuracy of the Snellen Eye Chart depends on several factors, including the lighting conditions and the observer's perspective. When used correctly at a distance of 20 feet and in proper lighting, it provides a reliable measurement of visual acuity. This chart is an industry standard due to its effectiveness and ease of use in clinical settings, making it a trusted tool for eye care professionals.
  • 問題: What does a visual acuity result of 20/20 mean?

    Answer: A visual acuity result of 20/20 indicates that a person can see at 20 feet what a person with normal vision can see at the same distance. If your result is less than 20/20, it means you may have some degree of visual impairment. For instance, 20/40 vision means you need to be 20 feet away to see what someone with normal vision can see at 40 feet. This measurement helps consider the need for corrective lenses or further testing.
  • 問題: Can I use the Snellen Eye Chart at home?

    Answer: Yes, the Snellen Eye Chart can be utilized at home for monitoring visual acuity, although it is best to have it conducted by a professional for accurate results. You can print a chart or purchase one to hang at a designated distance. This allows you to track vision changes over time, helping you observe if there's a need for a comprehensive exam by an eye care specialist.
  • 問題: Are there different types of Snellen Eye Charts?

    Answer: Yes, there are various types of Snellen Eye Charts designed for different assessments. In addition to traditional letter charts, some may include E charts for non-readers, numbers, or pictures for children. Additionally, there are charts that test contrast sensitivity or visual fields. Choosing the right type depends on the specific vision assessment needs of the individual being tested.
  • 問題: How often should I get my vision tested using a Snellen Eye Chart?

    Answer: It is recommended to have your vision tested at least once every two years, but this frequency may vary based on your age, health, and existing eye conditions. Regular testing with a Snellen Eye Chart allows for early detection of vision issues, ensuring timely corrective measures can be taken. Individuals with existing eye problems or at risk for eye diseases should consult their eye doctor about more frequent testing intervals.
  • 問題: What lighting is recommended when using a Snellen Eye Chart?

    Answer: Optimal lighting is crucial when using a Snellen Eye Chart for accurate visual assessment. It is best to have even, bright lighting that does not create glare on the chart or cast shadows. Natural daylight or diffused artificial light is ideal for ensuring the letters on the chart are clearly visible, thereby allowing for a proper assessment of visual acuity.
  • 問題: Where can I buy a Snellen Eye Chart, Red and Green Bar Visual Acuity Test, 20 Foot Test Distance in Taiwan?

    Answer: You can buy the Snellen Eye Chart, Red and Green Bar Visual Acuity Test, 20 Foot Test Distance at Ubuy. Ubuy offers a range of eye care products, ensuring you can access the tools needed for effective vision screening right from your home.

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優點

  • Easy to use
  • Standardized test
  • Clear visibility

缺點

  • Limited instructions

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TWD 1029

立即訂購並活動它 週四, 八月 27

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
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特色和優勢

  • - Trusted worldwide for accurate acuity vision testing with true Snellen optotypes.
  • - Includes red and green color bars for easy color vision testing.
  • - Made of durable and easy-to-clean high impact polystyrene.
  • - Can be wall-mounted for convenience.
  • - Features Snellen equivalents for accurate vision recording.
  • - Great for school vision screenings.

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