(b), (c) Broadwood Capital is an investment adviser registered with the Securities and Exchange Commission that is principally engaged in the business of providing investment advisory services. Broadwood Partners is a pooled investment vehicle that is principally engaged in the business of investing its assets in securities. Broadwood Capital serves as the general partner of Broadwood Partners. Neal Bradsher is the President of Broadwood Capital. The principal business address of the Reporting Persons is: c/o Broadwood Capital, Inc., 156 West 56th Street, 3rd Floor, New York, New York 10019.

None of the Reporting Persons have, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

None of the Reporting Persons have, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

The funds for the purchase of the 13,519,491 Shares beneficially owned by Broadwood Partners came from its working capital. No borrowed funds were used to purchase the Shares, other than any borrowed funds used for working capital purposes in the ordinary course of business. The funds for the purchase of the 13,519,491 Shares beneficially owned by Broadwood Capital came from the working capital of Broadwood Partners, which is the direct owner of the Shares. No borrowed funds were used to purchase the Shares, other than any borrowed funds used for working capital purposes in the ordinary course of business. The funds for the purchase of the 13,545,391 Shares beneficially owned by Mr. Bradsher came from his personal funds and the working capital of Broadwood Partners. No borrowed funds were used to purchase the Shares, other than any borrowed funds used for working capital purposes in the ordinary course of business.

On August 5, 2025, the Issuer announced that it had entered into a definitive merger agreement through which Alcon will acquire the Issuer. The Reporting Persons have not decided whether to vote in favor of the merger, against the merger, or in favor of a superior offer. One of the Reporting Persons, Broadwood Partners, L.P., is making a demand for books and records under Section 220 of the Delaware General Corporation Law seeking documents relating to the process that led to the merger so that it can further evaluate the quality of the process and further inform its voting decisions. The Reporting Persons also plan to explore strategic alternatives to the merger, including through contact with possible alternative strategic partners for the Issuer. The Reporting Persons intend to review their investment in the Issuer on a continuing basis, taking into account the merger agreement. Depending on various factors including, without limitation, the Issuer's financial position, the terms of the merger agreement, a potential superior offer, the price levels of the Shares, conditions in the securities markets and general economic and industry conditions, the Reporting Persons may take such actions with respect to their investment in the Issuer as they deem appropriate. In that regard, the Reporting Persons have been and may continue to be in contact with members of the Issuer's management, Board, other significant shareholders, potential alternative strategic partners for the Issuer, and others regarding alternatives that could be employed to create additional shareholder value, whether in the near or long term. Except as otherwise set forth herein, the Reporting Persons do not have any present plans or proposals which would relate to, or result in, the matters set forth in subparagraphs (a) - (j) of Item 4 of Schedule 13D. However, subject to market conditions and in compliance with applicable securities laws, the Reporting Persons reserve the right, at a later date, to effect one or more of such changes or transactions in the number of Shares they may be deemed to beneficially own in open-market or privately negotiated transactions, on such terms and at such times as the Reporting Persons may deem advisable.

(a)-(d) As of the date hereof, Broadwood Partners may be deemed to be the beneficial owner of 13,519,491 Shares, constituting 27.3% of the Shares, based upon 49,553,035 Shares outstanding as of the date hereof. Broadwood Partners has the sole power to vote or direct the vote of 0 Shares and the shared power to vote or direct the vote of 13,519,491 Shares. Broadwood Partners has sole power to dispose or direct the disposition of 0 Shares and the shared power to dispose or direct the disposition 13,519,491 Shares. As of the date hereof, Broadwood Capital may be deemed to be the beneficial owner of 13,519,491 Shares, constituting 27.3% of the Shares, based upon 49,553,035 Shares outstanding as of the date hereof. Broadwood Capital has the sole power to vote or direct the vote of 0 Shares and the shared power to vote or direct the vote of 13,519,491 Shares. Broadwood Capital has sole power to dispose or direct the disposition of 0 Shares and the shared power to dispose or direct the disposition 13,519,491 Shares. As of the date hereof, Mr. Bradsher may be deemed to be the beneficial owner of 13,545,391 Shares, constituting 27.3% of the Shares, based upon 49,553,035 Shares outstanding as of the date hereof. Mr. Bradsher has the sole power to vote or direct the vote of 25,900 Shares and the shared power to vote or direct the vote of 13,519,491 Shares. Mr. Bradsher has sole power to dispose or direct the disposition of 25,900 Shares and the shared power to dispose or direct the disposition 13,519,491 Shares. There have been no transactions in the Shares by the Reporting Persons during the past sixty days.

N/A

The information set forth in Item 4 above is incorporated by reference in its entirety in this Item 6. The Reporting Persons do not have any contract, arrangement, understanding or relationship with any person with respect to securities of the Issuer that is not described herein and/or in a previous Schedule 13D filed by the Reporting Persons in respect of the Issuer.

Exhibit A: Joint Filing Agreement