Improve Eyesight: The cards help exercise binocular vision and enhance visual perception, suitable for individuals with strabismus and amblyopia. Strabismus Training: These visual training cards serve as a convenient tool for strabismus and amblyopia exercises, easy to use at home. Perfect Size: Each strabismus training card measures approximately 14 x 7 cm (5.51 x 2.76 in), lightweight and comfortable to hold without causing hand fatigue. Package Included: Set includes 2 amblyopia correction cards, simple to use; consistent practice may support improved visual function. Coated Paper: Made from coated paper material, the cards are durable, resistant to smudges, and built for repeated use. Specification Item Type: Strabismus Training Cards Material: Coated Paper Single Sheet Size: Approx. 14 x 7 cm / 5.51 x 2.76 in How To Use: 1. Hold the card close to your nose with the smallest pattern facing you. The left eye view is red and the right eye view is blue. 2. Focus on the largest pattern farthest on the card. The user may initially see the large pattern as a mix of red and green, while the medium and small patterns appear separately to each eye. 3. Alternate focus between the large, medium, and small patterns, maintaining focus on each for 5 seconds. During concentration on one pattern, the others may appear in separate colors. Repeat the sequence 10 times. 4. If focusing is difficult, try the following: - Adjust the card slightly closer to encourage convergence. - Move the card a little farther away or lower to find a comfortable viewing angle. Package List: 2 x Training Cards