Volk 4-Mirror Glass High Mag Gonio Lens

Brand: Volk


The Volk G-4 Four-Mirror Glass High Mag lens is a standard gonio lens for static and dynamic (no flange version) gionioscopy.

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Maximum character count is: 12
Maximum character count is: 14

4-Mirror, All-Glass Design

  • 50% more image magnification than our classic G-4 Gonio enables more detailed viewing of the trabecular meshwork
  • Available with a
    • large ring (28.5 mm)
    • a small ring (25.5 mm)
    • 2-position handle (right/left handed)
  • No flange version is ideal for dynamic and indentation gonioscopy
  • Flanged version provides stability for laser trabeculoplasty
  • 4 mirror, Sussman style lens with unbeatable Volk optics
  • Also available in a handled (Posner-style) model

Comes with single lens case. Please allow 1-2 weeks for delivery for lenses with engravings.



  • Crispest, clearest imaging with high magnification to appreciate details previously unattainable with Gonio lenses.
  • All glass design provides superior clarity and durability compared to acrylic lenses.
  • Four precisely angled mirrors provide full 360° views of the anterior chamber.
  • Available in Flanged or No Flange (nf) contact options.
  • No Flange (nf) contact design does not require interface solution allowing quick eye contact, reducing patient discomfort and facilitating the examination.
  • No Flange version not rated for use with ophthalmic laser treatments.
  • Available in large or small ring desgin to suit dexterity & personal preference.
  • Available separately on a 2-position handle to suit personal preferences: VG4HMHAN2.
  • Comes with single lens case


Mirror Angles Image Magnification Laser Spot Size Contact Diameter
4 x 64° 1.50x 0.67x

Flange: 15 mm

No Flange: 8.4 mm