Unitech Vision Raf Ruler

The Unitech Vision RAF Ruler is a reliable diagnostic tool designed for comprehensive eye examinations, enabling precise measurement of critical visual functions. It is widely used in ophthalmology and optometry practices to assess the Near Point of Convergence (NPC) and Near Point of Accommodation (NPA). This instrument is indispensable for determining convergence points, examining accommodation, and identifying the master eye.

Crafted for accurate and effective eye assessments, the RAF Ruler features a 50 cm long rule with a slider that holds a rotating four-sided cube. This cube is equipped with different targets, including a vertical line with a central dot for precise convergence fixation, allowing for varied and detailed eye assessments. The design facilitates the determination of both objective and subjective convergence points, which is crucial for diagnosing visual function, and enables a thorough assessment of the eye’s ability to focus at different distances.

The Unitech Vision RAF Ruler supports the diagnosis and management of conditions such as convergence insufficiency, a common cause of asthenopic symptoms. Its utility extends to providing a standard tool for research purposes and therapeutic home-based orthoptic exercises.

Key Features : 

Diagnostic Parameters Measured: Measures Near Point of Convergence (NPC) and Near Point of Accommodation (NPA), including objective and subjective convergence points.
Clinical Applications: Essential for comprehensive eye examinations, diagnosing convergence insufficiency, assessing accommodation issues, and identifying the master eye.
Design and Components: Features a 50 cm long rule with a sliding mechanism and a rotating four-sided cube equipped with multiple targets for versatile testing.
Measurement Precision: Provides measurements with 1 mm increments for accurate recording of visual functions.

The RAF Ruler is built from high-quality materials, measuring 50 cm in length, and includes a rotating four-sided cube with varied targets. This thoughtful design ensures versatility in performing different types of visual examinations.

• Position the RAF Ruler approximately 50 cm from the patient’s eyes.
• Use the rotating cube to present different targets, depending on the visual function you wish to assess.
• Ask the patient to focus on the vertical line and central dot to evaluate convergence.
• Move the slider along the ruler to test both accommodation and convergence at different distances.
• Identify the master eye by alternating the cube targets while observing the eye's response.

• Ensure the RAF Ruler is cleaned after each use to prevent cross-contamination.
• Handle with care to preserve the accuracy of the ruler and its moving components.
• Store in a dry environment to maintain the integrity of the materials.