SANTA ANA, Calif.--Advanced Medical Optics (NYSE: AVO) has negotiated an additional $200 million in credit under terms of a new agreement with its senior lender.

The new credit will be available to help finance the company’s pending acquisition of VISX (NYSE: EYE), according to a filing last week with the Securities and Exchange Commission.

The $1.27 billion VISX acquisition, announced in November, is expected to close during this year’s first quarter, according to Advanced Medical Optics.

The purchase price includes approximately 29 million shares of Advanced Medical Optics' stock and $184 million in cash.