Description
Plastic
Beads
Nylon
String
Beads
wood
Therapeutic
heavier cords
Product description
- The Stereo Fly Test – Standard is a classic near stereo-acuity test used to evaluate binocular depth perception across a wide range—from gross stereopsis to finer stereo thresholds. Using polarized images viewed with stereo glasses, patients perceive raised figures (most famously the fly) only when both eyes are working together, making the test intuitive, engaging, and clinically reliable for children and adults alike.
- What it measures: Presence and level of stereopsis (gross to finer depth perception)
- How it works: Polarized viewing reveals raised images only with true binocular fusion—no monocular clues
- Patient-friendly: The large fly is easy to understand and engaging, especially for pediatric and first-time patients
- Clinical value: Useful for screening and monitoring binocular vision, amblyopia, and strabismus
- Versatile testing: Includes multiple targets/levels to move beyond demonstration to graded assessment
- Common settings: Pediatric ophthalmology/optometry clinics, VT practices, and school screenings
- Quick & repeatable: Fast to administer with consistent results across visits
- Care: Keep plates clean and flat; protect from scratches; ensure polarized glasses are in good condition for accurate testing
| Topic | Details |
| Target Users | Intended for optometrists, ophthalmologists, orthoptists, and vision therapists who treat functional vision disorders such as convergence insufficiency, binocular vision dysfunction, accommodative disorders, strabismus rehabilitation, and reading-related visual problems. It is also suitable for clinic-based therapy programs and supervised home therapy exercises for children and adults. |
| Category | Vision Therapy Kit |
| Purpose | The Complete Vision Therapy Kit is designed to support structured vision therapy programs aimed at improving binocular vision, convergence and divergence, accommodative flexibility, eye movements (saccades and pursuits), suppression control, fusion ability, and visual-motor coordination. It provides a comprehensive set of tools for clinical therapy sessions and supervised home training. |
| Optotypes / Symbols | The kit includes a wide variety of therapy materials that use letters, shapes, dots, circles, colored bars, and geometric targets. Examples include Hart charts (letters), dot convergence cards, eccentric circle cards, and red-green reading materials used to train eye movements, fusion, and suppression control. |
| Scaling / Spacing | Different tools in the kit use different scaling systems depending on their purpose. Charts follow standard optotype spacing and progression, while therapy tools such as Brock strings, convergence cards, and accommodative flippers use adjustable distances, bead spacing, or lens power increments (e.g., ±1.00D, ±1.50D, ±2.00D) to gradually increase therapy difficulty. |
| Testing Distance | Therapy exercises may be performed at near distances (approximately 33–40 cm) for accommodative and reading tasks, intermediate distances (1–2 m) for vergence training, and distance setups (around 6 m) when using distance charts or fixation targets depending on the therapy protocol. |
| Dimensions | The kit contains multiple tools of varying sizes including charts, cards, strings, flippers, goggles, and fixation targets. Typical items include Brock strings of about 10 ft length, handheld therapy cards, and standard therapy charts suitable for clinic or therapy room use. |
| Mounting / Display | Some components such as distance charts or accommodative charts are wall mounted, while most therapy tools (cards, flippers, prisms, reading bars, Brock strings, fixation targets) are handheld or tabletop devices used during therapy sessions. |
| Features | The kit provides a comprehensive set of therapy tools covering multiple visual skills including vergence training, accommodative facility, suppression control, stereopsis awareness, fixation stability, and eye movement training. The tools allow progressive therapy programs tailored to each patient’s condition. |
| Accessories | The kit typically includes multiple therapy instruments such as: Dot Convergence Cards, Barrel Convergence Card, Eccentric Circles Cards, Hendrickson Lifesaver Card, Z-Axis Accommodative Rock Charts (distance and near), Red-Green Reading Bar, Red-Green Glasses, Brock String with beads, Marsden Ball, Confirmation Flippers (±1.00, ±1.50, ±2.00), Vergence Facility Prism Flipper, LED Penlight, and Fixation Fruit Stick. |
| Durability / Material Qualities | Components are usually made from laminated charts, durable plastic cards, nylon cords, optical glass lenses, and sturdy plastic frames to withstand repeated clinical use. Materials are selected to allow easy cleaning, long-term durability, and safe handling for pediatric therapy environments. |
| Usability | The kit is designed for easy integration into therapy programs, with tools that are intuitive for both clinicians and patients. Exercises can be adjusted in difficulty and used for structured therapy sessions or guided home practice. Engaging materials improve patient cooperation, especially in children. |
| Marker of Quality | A high-quality vision therapy kit includes comprehensive therapy tools, durable materials, clearly labeled equipment, and compatibility with standard therapy protocols. Kits from reputable manufacturers offer reliable clinical performance, expansion capability, and replacement parts availability, making them suitable for long-term use in vision therapy clinics. |
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