'Vicious' assault of partly blind Melbourne grandfather captured on camera

Three teenage gang members were jailed after a horrific attack on a partly blind grandfather in Melbourne was captured on camera.

Video footage shows the 63-year-old victim being dropped to the ground and stomped on by his attackers - two as young as 16.

The victim was walking in the suburb of Sunshine West when the thugs started attacking him for his shoes and phone, 9 News reported.

Three of the attackers - aged 20, 18, and 16 - received jail sentences, while another 16-year-old was convicted and must attend a youth justice unit.

Victoria deputy police commissioner Rick Nugent told 9 News he was sickened by the offending. 

He described it as a "vicious attack on a person that's going about their business".

In September, Nugent told 3AW radio that Victoria was losing the fight against crime being committed by youth, after it was revealed it had risen by 9 percent. That led to the launch of Operation Alliance - as part of statewide bid to clampdown on youth gangs on the street. 

"Operation Alliance uses an integrated and coordinated approach to tackling youth gangs in every region, division and police service area across the state," Nugent said in October, as reported by news.com.au. 

"We make no apologies for targeting the individuals who commit the most serious and violent crimes in our community."