Revenues were up by 23.1 percent to $20.3 million for the optical segment of A.T. Cross Company, which includes Costa Del Mar and Native Eyewear sunglasses. For the second quarter ended July 3, both brands saw strong growth. Overall consolidated sales for the company grew by 11.9 percent to $41.7 million. Its accessory unit had a 3 percent increase in sales to $21.4 million. Net income jumped to $2.7 million, compared with just $600,000 for the same period last year.