DiagnosTear Technologies Inc. — Regulatory Filings 2026

Mar 31, 2026

Doane Grant Thornton LLP

March 30, 2026

To: British Columbia Securities Commission
Ontario Securities Commission

Doane Grant Thornton LLP
11th Floor
200 King Street West, Box 11
Toronto, ON
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T +1 416 366 0100
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Re: Notice of Change of Auditor – DiagnosTear Technologies Inc.

We have reviewed the information contained in the Notice of Change of Auditor of DiagnosTear Technologies Inc. dated March 30, 2026 (the "Notice"), which we understand will be filed pursuant to Section 4.11 of National Instrument 51-102.

Based on our knowledge of such information at this time, we agree with the statements made in the Notice.

Yours sincerely,
Doane Grant Thornton LLP

Doane Grant Thornton LLP

Chartered Professional Accountants, Licensed Public Accountants
Toronto, Ontario

Audit • Tax • Advisory
Doane Grant Thornton LLP. A Canadian Member of Grant Thornton International Ltd