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250800 LEA SYMBOLS Near Vision Card
This test assesses a child’s functional vision at near distances. Can also be used to familiarize child with testing procedure before introducing a distance test.
₹500.00
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Description
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Product description
- This test assesses a child’s functional vision at near distances. Can also be used to familiarize child with testing procedure before introducing a distance test.
- Proportionally spaced (logMAR) lines on one side and more tightly-spaced symbols on the opposite side. Line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent, 0.05 to 2.00. Response key printed on test card. Includes training cards and instructions. Card measures 8″ x 10″ (20.3 cm x 25.4 cm).
| Topic | Discription |
| Purpose / Target Users | This is a near-vision test card for assessing functional vision in children at near distances, i.e., close (“reading-distance”) vision. It can also act as a familiarization tool for children before they proceed to distance vision tests. Target users: pediatric patients (young children) who may not be familiar with letters, so symbolic optotypes (LEA symbols) are used. |
| Optotypes / Symbols | It uses LEA symbols (standard optotypes for pediatric vision testing). The sheet includes a response key printed on both sides for reference. One side has “more tightly-spaced symbols,” presumably to give a finer gradation of acuity. |
| Scaling / Spacing | The card uses proportionally spaced (logMAR) lines on one side. The opposite side has more tightly spaced symbols (i.e. smaller spacing increments between symbols) to refine acuity steps. |
| Range of Acuity / Line Sizes | The line sizes go from 20/400 to 20/10 (in U.S. notation). Equivalent metric scale: 6/120 to 6/3 In decimal acuity notation: 0.05 to 2.00 |
| Testing Distance | The designated testing (viewing) distance is 16 inches (which is ~ 40 cm) |
| Physical Size & Dimensions | The card’s physical dimensions are 8″ × 10″ (20.3 cm × 25.4 cm) It includes a cord (i.e. it is a card with a string) presumably so the tester can hold or suspend it at the correct distance. |
| Mounting / Display Features | Because it is a flat card with cord, it is not a mounted chart or wall chart — it is handheld or suspended via its cord to maintain the 40 cm viewing distance. No mention of a stand, frame, or illumination. It is likely a non-illuminated printed card. |
| Included Accessories / Extras | The package includes flashcards and instructions. Also, the answer/response key is printed on both sides of the card. A guide and answer key (downloadable) are linked on the product page. |
| Durability / Material Qualities | The product page does not explicitly detail what materials (lamination, plastic, card stock) are used. Because it is a clinical visual test card, one can reasonably expect durable card stock or laminated surfaces to withstand repeated use, but that’s not confirmed in the description. It is CE-approved (i.e. meets relevant European safety / quality standards) |
| Usability / Marker of Quality | Strengths / Useful Features: The dual arrangement (logMAR on one side, tighter spacing on the other) gives flexibility in testing resolution and incremental acuity steps. The presence of a response key makes it easier for testing and scoring, especially for children who are guessing or not verbalizing. Portable size (8 × 10 inches) is manageable for close vision screening in clinics, schools, or outreach settings. Presence of included instructions and flashcards helps standardize test administration. The CE mark is a marker of compliance with recognized standards. Good-Lite Co The use of LEA symbols is standard in pediatric vision screening (less dependent on letter knowledge). |
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