Patented Welch Allyn Coaxial Vision optics, combined with 68 lenses in single-diopter steps, for the precision you need to conduct a quality eye exam.
FEATURES:
- Halogen HPX® lamp illumination for true tissue color
- 18 unique aperture/filter combinations for greater versatility
- Polarizing filter virtually eliminates corneal reflection
- 68 lenses in single-diopter steps for precise resolution (+38 to -30)
- Compatible with all existing Welch Allyn 3.5 V power sources
