Tangent Streak (Trifocal)

Lenses>Specialty GP>Trifocal>Tangent Streak

Link to Fitting Guide

Design

• Executive style segmented translating trifocal

• An intermediate zone for arm's length viewing

• Manufactured in Fluorex 700, Boston ES and Paragon HDS material.

Candidates

• Patients who have presbyopia

• Patients who have occupations and extracurricular activities that demand excellent vision.

Lens Parameters

• Any base Curve radius

• Diameters

9.0mm to 10.0mm

• Truncation

.2mm to .4mm

Fitting

• Use trial lenses in a diagnostic set.

• Call Valley Contax with K’s and Rx, spectacle add, measurement from lower lid to lower pupil margin.