People with reduced visual acuity often also experience lower contrast sensitivity.
Decreased contrast sensitivity may arise from cloudy ocular media, retinal deposits, the loss of receptor cells or similar.
Special blue blocking or comfort filters provide help in this context and enhance the ability to see in contrast.
IV Proshield
Light protection spectacles with filter lenses in different colours without or with an additional grey tint of 60%. Frame size and filter number printed in temple. Made in the European Union.
IV Proshield Wrap-Around Frame
For use without corrective spectacles. Black matt PC polymer frame in size 61-17.
PC Polymer filter lenses:
- C1: Comfort filter in amber colour
- 450: Blue blocker in yellow colour
- 500: Comfort filter in light orange colour
- 511: Blue block in orange colour
IV Proshield Fit-Over Frame
For use over corrective spectacles. Black matt PC polymer frame in size 63-12. Grey tinted PC polymer side windows.
PC polymer filter lenses:
- C1: Comfort filter in amber colour
- 450: Blue blocker in yellow colour
- 500: Comfort filter in light orange colour
- 511: Blue blocker in orange colour