Is there a big difference between 1.67 and 1.74 high index lenses?

Is there a big difference between 1.67 and 1.74 high index lenses?

But with regular plastic lenses, a lens treatment is necessary for these lenses to block all Ultra violet rays. This UV treatment does not change the looks of the lenses and is quite inexpensive. It’s around 10X more impact-resistant than high-index lenses and is which means ideal lens material for sports protective eyewear and children’s…