Well, kids should definitely wear sunglasses while they are outside, says Dr Michael Jones, paediatric eye specialist at the Children's Hospital at Westmead and the Sydney Eye Hospital, NSW.
In fact, wearing sunglasses as a youngster can help protect against the most common eye conditions that develop later in life.
We tend to forget that a lot of our sun exposure happens when we are children, when we spend a lot of time outdoors in direct sunlight, Jones says.
UV light from the sun is a form of radiation and it can damage cells in the eye.
There's no firm evidence that children's eyes are more susceptible to UV light than adults'. But we do know the longer eyes are exposed without protection the more damage they accumulate from these harmful rays.
It is a sales boom that puts even the most virulent marketing craze in the shade. Cautious parents are flocking to buy sunglasses specially engineered to protect their babies’ eyes from the sun’s damaging rays, almost from the moment they are born.
Demand for the high-specification designs has taken off to such an extent that one British company has reported sales doubling every year – even though the UK has been experiencing the worst summer weather in decades.
Opticians have traditionally advised caution when giving sunglasses to very small children, as inferior designs can do more harm than good.
Spectacular: Six-month-old Jacob Boobyer-Henrick, whose mum Lauren says the shades are 'fantastic'
But a new generation of lenses that block out all harmful ultraviolet rays has proved a hit with parents increasingly alert to the dangers of too much sunlight.
Optician Julie Diem Le said: ‘Parents are much more aware about the importance of UV protection. Slapping a high-factor suncream to protect their kids’ skin has become second nature for parents – and so will the practice of getting them to wear sunglasses