Signature Eyewear, the troubled US eye frame company, has obtained an extension of its credit facility until Aug. 31 after reporting better-than-expected results for the 1st half ended Apr. 30. The company turned around to a profit in the first two quarters from net losses in the corresponding periods a year ago. Sales declined slightly to $23.3 million in the first 6 months of the new fiscal year, but major savings were obtained through staff cuts and reductions in promotional expenditures.