They met people whose lives were different from their own.
They dealt with discomfort and uncertainty.
They spent extraordinary amounts of time together as a family.
Even if their vision changes dramatically in adulthood, those experiences remain part of their personal histories.
Preparing Without Giving Up the Present
One of the strongest ideas in the family's story is that preparation for disability does not have to mean treating the present as a countdown.
Retinitis pigmentosa is serious.
The National Eye Institute notes that most people with RP eventually lose much of their sight, although the rate and extent of progression vary.
That reality cannot simply be ignored.
But it does not mean life stops at diagnosis.
People with visual impairment can study, work, travel, build relationships, raise families, participate in sports and live independent lives with appropriate skills, technology and accessibility.
For children growing up with a progressive visual condition, preparing for possible changes in vision can therefore exist alongside exploration, education and ordinary childhood experiences.
The Pelletiers' trip represents one family's response to that challenge, not a prescription for how every family should react.
Most families could never spend a year traveling internationally, nor would such a journey necessarily be the right choice for everyone.
The deeper principle is much more universal.
A difficult diagnosis may change the future someone imagined.
It does not automatically erase the possibilities available today.
Four Children, Not Just Three Diagnoses
Another important part of the story is Léo.
Three of the Pelletier children were diagnosed with RP.
Léo was not.
Yet the journey belonged to all four children.
That matters because a serious condition rarely affects only the person who receives the diagnosis.
Siblings grow up alongside it.
Parents make decisions around it.
Family routines change because of it.
Everyone experiences uncertainty in a different way.
By traveling together, the Pelletiers created a shared chapter in their family history rather than separating the children into those with RP and the one without it.
They were four siblings discovering the world together.
The diagnosis was part of their story.
It was not their entire identity.
From Fear to Curiosity
There is something striking about the direction the family chose after receiving frightening news.
A diagnosis can make the world feel smaller.
Suddenly there are limitations to consider, appointments to attend, risks to understand and questions nobody can answer with certainty.
The Pelletiers responded by making their children's world physically larger.
They crossed borders.
They entered unfamiliar environments.
They met strangers.
They saw wildlife.
They experienced different languages and cultures.
They turned uncertainty into curiosity.
That does not mean fear disappeared.
Nor does it mean the journey somehow transformed a serious medical condition into something positive.
The children still have RP.
Their parents still have to live with uncertainty about how their vision will change.
But difficult circumstances and meaningful experiences can exist simultaneously.
That may be one of the most important lessons of Blink.
What Comes After the Trip?
Eventually, even the most extraordinary journey has to end.
The family returned home carrying thousands of photographs and videos, but also something much harder to quantify.
They had spent an extended period experiencing the world together.
The documentary preserved part of that journey for the children and for audiences around the world.
But their lives continued beyond the final scene.