The OCULUS Universal Trial Frame UB 4 is a premium professional trial frame engineered for accurate and comfortable subjective refraction and lens fitting. Handcrafted with high‑quality, skin‑friendly materials, this ergonomic frame accommodates up to 10 standard 38 mm trial lenses (five per eye), enabling comprehensive prescription assessment. Its adjustable features – including pupillary distance (PD) range from approximately 46–80 mm, adjustable temple length and tilt, and smooth cylinder axis adjustment – allow precise lens alignment and optimal fit for a wide variety of patients. The frame also includes a vertex distance (CVD) scale to help maintain consistent measurement parameters. Designed for comfort, controls sit well away from the face, with flexible, anatomically shaped earpieces and a self‑braking nose bridge to reduce pressure and improve patient acceptance. Compatible with DIN and BSI standard trial lenses, the UB 4 combines durability, comfort, and clinical versatility for everyday refraction use.

Enhance Your Setup

  • OCULUS Half Eye Trial Frame with Fixed Bridge

    £145.00 + VAT
    • Fixed bridge ensures stable, consistent lens positioning during refraction
    • Holds up to three standard 38 mm trial lenses
    • Adjustable pupillary distance allows precise alignment for accurate testing
    • Lightweight, durable design provides comfort for patient and clinician
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  • OCULUS Universal Trial Frame UB 5

    £349.95 + VAT
    • Holds up to twelve standard 28 mm trial lenses
    • Fully adjustable pupillary distance for precise lens alignment
    • Ergonomic design enhances comfort during extended refractions
    • Smooth cylinder axis adjustment improves clinical measurement accuracy
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  • OCULUS Universal Trial Frame UB 6

    £459.95 + VAT
    • Holds twelve lenses enabling complex subjective refraction combinations
    • Adjustable pupillary distance accommodates wide range of patients
    • Ergonomic frame enhances comfort and clinical exam efficiency
    • Clear scale and smooth controls support precise adjustments
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  • OCULUS Universal Trial Frame UB3+

    £314.95 + VAT
    • Adjustable PD allows precise alignment for accurate refractions
    • Supports five pairs of standard 38 mm trial lenses
    • Lightweight and ergonomic design improves patient comfort
    • Vertex distance scale and adjustable temples ease use
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  • OCULUS Half Eye Trial Frame with Fixed Bridge

    £145.00 + VAT
    • Fixed bridge ensures stable, consistent lens positioning during refraction
    • Holds up to three standard 38 mm trial lenses
    • Adjustable pupillary distance allows precise alignment for accurate testing
    • Lightweight, durable design provides comfort for patient and clinician
    View product
  • OCULUS Universal Trial Frame UB 5

    £349.95 + VAT
    • Holds up to twelve standard 28 mm trial lenses
    • Fully adjustable pupillary distance for precise lens alignment
    • Ergonomic design enhances comfort during extended refractions
    • Smooth cylinder axis adjustment improves clinical measurement accuracy
    View product
  • OCULUS Universal Trial Frame UB 6

    £459.95 + VAT
    • Holds twelve lenses enabling complex subjective refraction combinations
    • Adjustable pupillary distance accommodates wide range of patients
    • Ergonomic frame enhances comfort and clinical exam efficiency
    • Clear scale and smooth controls support precise adjustments
    View product
  • OCULUS Universal Trial Frame UB3+

    £314.95 + VAT
    • Adjustable PD allows precise alignment for accurate refractions
    • Supports five pairs of standard 38 mm trial lenses
    • Lightweight and ergonomic design improves patient comfort
    • Vertex distance scale and adjustable temples ease use
    View product