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Lea Symbols 15 Line Pediatric Eye Chart
Sr No Topic Discription 1 Symbols Uses child-friendly shapes (house, apple, circle, square). 2 Material Sturdy chart with hanging holes; foldable versions available. 3 Lines 15 lines, from large (10/100) to very small (10/4) 4 Dimensions Approx 17″ × 21″ (≈ 43 cm × 53.4 cm) 5 How to use for Tests distance vision in…
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Description
| Sr No | Topic | Discription |
| 1 | Symbols | Uses child-friendly shapes (house, apple, circle, square). |
| 2 | Material | Sturdy chart with hanging holes; foldable versions available. |
| 3 | Lines | 15 lines, from large (10/100) to very small (10/4) |
| 4 | Dimensions | Approx 17″ × 21″ (≈ 43 cm × 53.4 cm) |
| 5 | How to use for | Tests distance vision in young children. |
| 6 | Test Distance | Standard at 10 feet (3 meters). |
| 7 | Purpose | Pediatric distance visual acuity testing / screening. Designed for children (from age ~2½‐3 years) who can recognize symbols more easily than letters. Can test both monocularly and binocularly. |
| 8 | Size | About 17″ × 21″ (43 × 53 cm). |
| 9 | Durability | Long-lasting if well cared for; requires proper lighting and cooperation |
| 10 | Durability & Limitations | relatively long life if kept flat, clean, not torn; folding versions need careful handling to avoid creases or damage |
| 11 | Spacing | Proportionally spaced (ETDRS style) for accuracy. |
| 12 | Notations | Includes Snellen, LogMAR, and decimal equivalents |
| 1 | Purpose / Target Users | Designed for distance visual acuity testing / screening in young children (starting approx 2½ years old). Also used in schools and clinics, and for special-needs children |
| 2 | Optotypes / Symbols | Uses the LEA SYMBOLS set (house, apple, circle, square) so no need for letter recognition, suitable for pre-readers. |
| 3 | Scaling / Spacing | Proportionally spaced lines in ETDRS / logMAR format. Also includes a version in Massachusetts Visual Acuity Format with 50% spaced rectangles |
| 4 | Range of Acuity / Line Sizes | Front side: line sizes from 10/100 to 10/4 equivalent (or in Snellen / metric approx 20/200 to 20/8, or in metric 6/60 to 6/2.4) on distance version. Massachusetts format side: from about 10/50 to 10/4 equivalent |
| 5 | Testing Distance | Designed for use at 10 feet (~3 m) distance for chart-to-subject |
| 6 | Physical Size & Portability | Dimensions: 17″ × 21″ (≈ 43 cm × 53.4 cm) when unfolded. Folding version folds to 17″ × 10.5″ (≈ 43 cm × 26.7 cm) for portability. |
| 7 | Mounting / Display Features | Has a hole to hang on wall; folding version allows easy storage or use in multiple settings. Back side in some models is black for dual use (e.g. color vision test surface). |
| 8 | Included Accessories / Extras | Comes with a response key and instructions. Folding model may include flashcards. |
| 9 | Durability / Material Qualities | Printed on sturdy board / chart stock; folding version reduces wear in transportation; dual-use of back (black) suggests thicker or protective material. Also CE-approved for safety / standards where applicable. |
| 10 | Usability / Marker of Quality | Monocular & binocular testing possible. Equivalent markings in multiple units (letter size, 20 foot, 6 meter, decimal, logMAR) to allow flexibility. Recognized standard chart by Good-Lite; trusted in pediatrics. |
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