Description

The MASS & HOTV CHART LEA SYMBOLS is an essential tool for pediatric vision screening, specifically designed for children starting at age 2.5 years. Widely used in both clinical and educational settings, it aligns with the Massachusetts Preschool Vision Screening Protocol, ensuring reliable and accurate assessments.

Dual-Sided Design

• LEA SYMBOLS®: One side features the familiar LEA SYMBOLS®.
• HOTV Optotypes: The opposite side includes HOTV optotypes.

This dual-sided design enhances versatility, catering to various testing needs.

Chart Format

The chart employs a 50% spaced rectangle format, consistent with the Massachusetts Visual Acuity Test. It offers a range of line sizes from 10/50 to 10/4, with some references to 20/100 to 20/8 equivalents. This allows for comprehensive assessment across different visual acuity levels.

Practice Lines

Each side includes a practice line, with line sizes of 10/20 for younger children (around 3 years old) and 10/16 for those aged 4 and older. This feature aids in familiarizing children with the test, promoting accurate results.

Notations

The chart provides clear notations with actual letter sizes for 10-foot and 3-meter measurements on the left side, and equivalent sizes for 20-foot, 6-meter, decimal, and Log MAR measurements on the right side. This comprehensive notation system supports precise interpretation of visual acuity.

Accessories and Features

• Wall Hanging: Equipped with a hole for easy wall mounting.
• Response Key: Includes a response key with LEA SYMBOLS on one side and HOTV on the other.
• Instructions: Comes with detailed instructions for effective use.

Dimensions and Testing Distance

The chart measures 17 inches by 21 inches (43 cm x 53.4 cm) and is intended for use at a testing distance of 10 feet (3 meters). These specifications are designed to facilitate optimal testing conditions.

Compliance

CE approval ensures that the chart meets European health, safety, and environmental standards, providing peace of mind to practitioners regarding its quality and reliability.

This well-structured and thoughtfully designed eye chart is a valuable resource for early childhood vision assessment, aiding in the early detection and management of visual impairments.