MESVision Data Breach Investigation

Turke & Strauss LLP, a leading data breach law firm, is investigating Medical Eye Services, Inc., which does business as MESVision, regarding its recent data breach. The MESVision data breach involved sensitive personal identifiable information and protected health information belonging to over 346,000 individuals.


MESVision is a vision benefit administration company based in California. Founded in 1976, MESVision provides vision care services to employers through insurance companies, health maintenance organizations, preferred provider organizations and self-funded plans.3 Working with independent ophthalmologists, optometrists, opticians, and national optical chains across the country, MESVision offers its members a variety of brands and vision plans including glasses, contacts, and LASIK discounts.4 Headquartered in Foothill Ranch, California, MESVision has one location and employs over 200 individuals.


On August 23, 2023, MESVision discovered that it had experienced a data breach in which sensitive personal identifiable information may have been accessed and acquired. Through its investigation, MESVision determined that an unauthorized actor may have accessed and acquired this sensitive information through a vulnerability in the MOVEit file sharing platform on May 28, 2023, and May 31, 2023. On November 14, 2023, MESVision began notifying individuals whose information may have been impacted. The type of information potentially exposed includes:

  • Name
  • Social Security number
  • Date of birth
  • Address
  • Health insurance information

If you received a breach notification letter from Medical Eye Services, Inc.:

We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at (608) 237-1775 or

If you were impacted by the MESVision data breach, you may consider taking the following steps to protect your personal information.

  1. Carefully review the breach notice and retain a copy;
  2. Enroll in any free credit monitoring services provided by Medical Eye Services, Inc.;
  3. Change passwords and security questions for online accounts;
  4. Regularly review account statements for signs of fraud or unauthorized activity;
  5. Monitor credit reports for signs of identity theft; and
  6. Contact a credit bureau(s) to request a temporary fraud alert.

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