Technical Specifications

• Magnification: 1.65; Field of view ≥56 mm
• Red light scintillation system (λ = 640 nm)
• Vertical barrel rotation: 50° collection, 40° divergence
• Horizontal barrel rotation: ±30°
• Image translation along the optical axis: ±10°
• Barrel rotation along the optical axis: ±20°
• Interpupillary distance adjustment range: 45-75 mm
• Illumination: Symmetrical design, LED surface illuminator
• Device illumination: LED
• Haidinger brush device, adjustable speed: 50-100 rpm
• Flashing device: manual and automatic
• Automatic flashing frequency adjustment: 30-300 times/min
• Flashing modes:
  • 1/4 on, 3/4 off
  • 1/2 on, 1/2 off
  • 3/4 on, 1/4 off
• Flashing types:
  • Left and right simultaneously
  • Alternating left and right
  • Left and right sides always on, the other side is often off
  • Left and right sides are off, the other side is often off

Basic Stages of work

1. Testing (Diagnostics)

• Purpose: to assess the state of binocular vision, detect strabismus, and determine the angle of deviation.
• Measurements:
  • Objective angle (according to Hirschberg): assessment based on the position of light reflexes on the corneas.
  • Subjective angle: the patient's alignment of paired test objects. The difference between the objective and subjective angles is Angle of anomalous correspondence of the retinas (AAR).
  • Fusional reserves: measurement of the ability to fuse images when the device tubes are moved apart/together.
  • Binocular vision (fusion test): using paired objects to create a complete image.

2. Measurement

• Angle of strabismus: measured in degrees on the device scale.
• Fusional amplitude: in prism diopters (△) or degrees.
• Accommodation volume (if necessary): using lenses of different diopters.

3. Training (Orthoptics and Pleoptics)

• Goal: development and strengthening of binocular connections.
• Methods:
  • Fusion development: exercises to maintain the fusion of objects.
  • Fusion reserve training: gradual increase in load.
  • ACC elimination: "blinking" method to restore normal retinal correspondence.
  • Pleoptics: stimulation with light flashes, localized glare.

4. Improving Binocular Vision (Diploptics)

• Goal: To strengthen stable binocular vision in natural conditions.
• Methods:
  • Exercises for alignment and fusion in conditions similar to real-life ones.
  • Stereovision training using objects with parallax.
  • Simulation of fixation and tracking conditions.

Important: All procedures must be prescribed and supervised by an ophthalmologist or orthoptist. Exercises are selected individually based on the patient's diagnosis and age.