NEW YORK ( TheStreet) -- Shares of Ista Pharmaceuticals (Nasdaq: ISTA) were gapping down Friday morning with an open price 13.3% lower than Thursday's closing price. The stock closed at $7.20 Thursday and opened today's trading at $6.24.

The average volume for Ista has been 650,000 shares per day over the past 30 days. Ista has a market cap of $240.3 million and is part of the health care sector and drugs industry. Shares are up 40.4% year to date as of the close of trading on Thursday.

ISTA Pharmaceuticals, Inc., a pharmaceutical company, discovers, develops, and markets remedies for diseases and conditions of the eye in the United States.

TheStreet Ratings rates Ista as a sell. Among the areas we feel are negative, one of the most important has been generally deteriorating net income. You can view the full Ista Ratings Report.

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