Graham Field - 1257 - Ishihara Test Chart - 10 Plate B - Medical/Surgical

Below are the key product attributes and specifications that provide detailed information about this item:

The Graham-Field - 1257 - Ishihara Test Chart-10 Plate B is a standardized diagnostic tool used to assess color vision deficiencies, particularly red-green color blindness. This 10-plate edition is widely recognized in medical, educational, and occupational settings for its accuracy and reliability in detecting color vision anomalies.

Features:
- Contains 10 pseudoisochromatic plates designed to identify color vision deficiencies.
- Clear, high-contrast patterns for easy interpretation.
- Durable construction ensures long-term use in clinical environments.
- Compact and portable for convenient testing in various settings.
- Follows the original Ishihara test methodology for consistent results.

Specifications:
- Type: Color vision test chart
- Plate Format: 10-plate edition (Plate B)
- Material: High-quality printed paper with protective coating
- Dimensions: Standard chart size for easy handling
- Usage: Designed for professional medical, surgical, and optometric applications

Use Suggestion:
Administer the test in a well-lit room with natural daylight or standardized lighting. Have the patient view each plate from a normal reading distance (approximately 30 inches) and identify the numbers or patterns. Record responses to determine the presence and type of color vision deficiency. Ideal for routine eye exams, pre-employment screenings, and school vision tests.