Billionaire Radhakishan Damani, who is the Founder of DMart, invested ₹90 crore in eyewear retailer Lenskart, ahead of its ₹8,000-crore IPO in November, PTI reported. Lenskart is looking to raise ₹2,150-crore in fresh proceeds, along with an offer for sale of up to 13.2 crore shares by existing investors and promoters. Proceeds will be used to expand its store network.