STAAR Surgical (STAA) investor Broadwood Partners, which owns a 30.2% stake in the company, said Thursday that the proposed acquisition of the company by Alcon (ALC) remains "unfair" to shareholders.

Noting that a member of the STAAR Surgical's board recently voted against the transaction in a boardroom vote, Broadwood Partners said that the director joins the list of shareholders and proxy advisory firms who have showed concerns about the deal process, timing, and price.

Broadwood Partners said that most recently a majority of the company's board approved the revised deal terms without seeking an updated fairness opinion from the board's financial advisor.

STAAR Surgical did not immediately respond to MT Newswires' request for comment.

Shares of the company were up 3.7% in early Thursday trading.

Price: 24.90, Change: +0.91, Percent Change: +3.79