Description
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Product description
- The LEA SYMBOLS® Near Vision Card – Flip Chart is a pediatric near-vision testing tool designed for children who cannot read letters. Using standardized LEA symbols (commonly circle, square, house, apple) with equal legibility, it allows children to respond by matching or naming while you measure near visual acuity at a controlled reading distance. The flip-chart format makes testing quick and organized, helping clinicians track near vision changes over time in routine pediatric exams, amblyopia follow-ups, and vision therapy programs.
- What it measures: Near visual acuity using standardized LEA optotypes
- Ideal for non-readers: Matching/naming symbols works well for pre-literate children and multilingual settings
- Flip-chart convenience: Fast page turns, consistent presentation, and easy one-eye-at-a-time testing
- Clinical uses: Pediatric exams, near-vision complaints, amblyopia monitoring, pre/post-treatment comparisons, VT follow-ups
- Best practice setup: Hold at a standardized near distance (commonly 40 cm, per your protocol), ensure good illumination, and occlude accurately
- Scoring advantage: Multiple lines allow more precise tracking of improvement or regression
- Engagement: Simple shapes keep children attentive and reduce test anxiety
- Care: Keep pages clean and flat; store closed to avoid fading/soiling; wipe gently with approved cleaner to protect print quality
| Topic | Details |
| Category | Pediatric Ophthalmology / Near Vision Test |
| Purpose / Target Users | The LEA Symbols® Near Vision Card is designed for assessing near visual acuity in young children at reading distance. It is widely used by optometrists, ophthalmologists, orthoptists, and vision screening professionals to evaluate near vision in pediatric patients, especially those who cannot yet recognize letters. |
| Optotypes / Symbols | The card uses the standard LEA Symbols® optotypes, including circle, square, apple, and house. These symbols allow accurate vision testing in pre-literate children or individuals with limited reading ability. |
| Scaling / Spacing | One side of the card uses logMAR proportional spacing, ensuring standardized symbol size progression and spacing between symbols. The reverse side contains more tightly spaced symbols to allow finer grading of visual acuity. |
| Range of Acuity / Line Sizes | The card includes visual acuity levels ranging from 20/400 to 20/10 (Snellen equivalent). Metric equivalents are approximately 6/120 to 6/3, with decimal acuity values from 0.05 to 2.0. |
| Testing Distance | The recommended testing distance is 16 inches (approximately 40 cm), which corresponds to standard near vision testing distance for children. |
| Physical Size & Dimensions | The card measures approximately 8 inches × 10 inches (20.3 cm × 25.4 cm), making it portable and easy to use in clinical or screening environments. |
| Mounting / Display Features | The card includes a cord attachment that allows the examiner to maintain the correct testing distance during examination. It is typically handheld or suspended at near viewing distance rather than mounted on a wall. |
| Included Accessories / Extras | The set typically includes instruction sheets, flashcards, and a response key printed on the card to assist with testing and scoring. |
| Durability / Material Qualities | The card is generally produced using durable chart stock or laminated material, allowing it to withstand repeated handling during clinical examinations and vision screening programs. |
| Usability / Marker of Quality | The LEA Symbols® Near Vision Card is widely recognized for standardized pediatric visual acuity testing. The use of familiar symbols, proportional spacing, and multiple acuity notations makes it a reliable tool for clinical assessments, school screenings, and pediatric eye examinations. |
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