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Use case one
CorrectionFocus
A curved lens that bends light to the focal point of the eye. Spectacles, contact lenses, prescription optics.
A new category of lens
Redefining Vision.
Forward and rearward vision, delivered through a single semi-transparent mirrored lens. The rear-view mirror, built in.
Buy direct · limited edition
The original HINDSIGHT glasses.
The problem
Human perception is directional. Risk is not.
Your eyes face forward. Your world does not. Every time you move through traffic, across terrain, or through a crowd, a blind spot sits behind you. A century of rear-view mirror technology lives inside every car on the road. HINDSIGHT brings that standard to human movement.
The technology
See forward. See behind. With the flick of an eye.
One lens, two directions. A semi-transparent mirror, engineered into the surface.
A semi-transparent mirrored lens, divided at a proportion derived from the golden ratio. 72.36 percent is standard optical surface. 27.64 percent is the mirror. The mirrored zone stays transparent — forward vision continues through it. Shift focus and the rear-view appears. No cameras. No batteries. No electronics. The rear image sits in your natural peripheral field, the way a wing mirror sits in a driver's. You don't turn. You don't focus. You already saw.
The rear-view mirror, built into a lens.
The Lens Landscape
Correction. Comfort. Cognizance.
For over a century, lenses have done two jobs. Correction, to bring the world into focus. Comfort, to manage light. HINDSIGHT delivers the third — cognizance — a lens that adds rearward awareness alongside forward sight.
Use case two
ComfortLight
A tinted or filtered lens that attenuates the light reaching the eye. Sunglasses, polarised, photochromic, blue-light.
Use case three
CognizanceAwareness
A semi-transparent mirrored lens, divided at a proportion derived from the golden ratio. A lens that adds rearward awareness — forward and rearward, simultaneously.
The rear-view-in-the-lens ingredient brand
HINDSIGHT certified.
A HINDSIGHT certified lens meets the Complete PerceptionComplete Perception is the HINDSIGHT standard for a product that delivers forward sight and rear-view in the same lens. A product is HINDSIGHT certified when it meets this standard. standard. You will see it on partner products — performance eyewear, protective eyewear, professional equipment — the way you see MIPS on a helmet or Gore-Tex on a shell. The standard is the product. The lens is the proof.
Three groups. Nine disciplines.
Built for every direction humans move.
Complete Perception: a safety standard for human movement. HINDSIGHT certified lenses are engineered for nine disciplines, grouped into three clusters where rear-view awareness changes outcomes.
Sports
The disciplines where position and awareness decide outcomes.
Sports · 01
Cycling
Sports · 02
Running
Sports · 03
Snow Sports
Sports · 04
Water Sports
Sports · 05
Equestrian
Mobility
Every vehicle has a rear-view. Every rider should too.
Mobility · 01
E-Mobility
Duty
When what is behind you matters as much as what is ahead.
Duty · 01
First Responders
Duty · 02
Military
Duty · 03
Law Enforcement
The evidence
The research.
Research conducted at Edinburgh Napier University measured how wearers respond to hazards approaching from behind. Wearers reacted to rear hazards 139 milliseconds faster. Every figure below is traceable to the source document.
Rear-hazard reaction
139ms
Faster than without the lens (Edinburgh Napier)
Forward vision
Preserved
Maintained while rear-view is present (Edinburgh Napier)
Answers
Frequently asked.
What is HINDSIGHT?
HINDSIGHT makes a lens that lets the wearer see forward and rearward at the same time, through a single semi-transparent mirrored lens. HINDSIGHT is the rear-view-in-the-lens ingredient brand, supplied to eyewear and activity-brand partners who carry the HINDSIGHT certification on the finished product.
How is the lens divided?
The lens is divided at a proportion derived from the golden ratio — 72.36% standard optical surface, 27.64% mirrored zone. The mirrored zone is semi-transparent, so forward vision continues through it. Shift focus and the rear-view appears. Passive optics — no cameras or electronics.
Is HINDSIGHT a cycling brand?
HINDSIGHT was founded out of a need cyclists face. Our founder, Alex Macdonald, is a cyclist, and it was through cycling that he developed the technology. Since launching, the technology has drawn interest across multiple disciplines — running, e-mobility, snow sports, water sports, equestrian, and professional service applications — and HINDSIGHT today is a multidisciplinary technology company. Cycling is where we started. It is no longer the limit of what we serve.
Is there scientific research on HINDSIGHT?
Research conducted at Edinburgh Napier University recorded 139ms faster reaction times to rear hazards with forward vision continuing through the mirrored zone.
Who founded HINDSIGHT?
HINDSIGHT was founded by Alexander Macdonald, a physicist, and co-founded with Callum Skinner, Rio 2016 Olympic gold medallist.
Where can I find HINDSIGHT products?
On HINDSIGHT certified partner products — look for the certification on partner packaging and product pages.