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Doctors & Staff

Meet the experienced and friendly doctors and staff who make Holly Vision Clinic the leading provider of vision care products and services in .

Allison B. Middleton, O.D., F.A.A.O.

Dr. Allison Middleton was born and raised in Grand Blanc and attended Grand Blanc Community High School. In 2010, she graduated with honors from Michigan State University. Following completion of internships at the Aleda Lutz Veteran’s Administration Hospital, Heart of the City Vision Clinic and Henry Ford Optimeyes, she graduated with distinction from the Michigan College of Optometry in May of 2014. After completion of her education, she elected to pursue an extra year of training through an Ocular Disease and Primary Care residency at the Veteran’s Administration hospital in Fort Wayne, IN. This allowed her to perform rewarding work with veterans, as well as gain extensive experience in the area of ocular disease.

While in optometry school, Dr. Middleton was active in a number of professional organizations including the American Optometric Association, American Optometric Student Association, Michigan Optometric Association, Michigan Optometric Student Association, and Beta Sigma Kappa International Optometric Honor Society.  She is a lifetime Girl Scout and enjoys volunteering as her niece’s Girl Scout troop leader. After earning her Fellowship of the American Academy of Optometry she took a position on the FAAO Admissions Committee. She volunteers her time to evaluate and give feedback on FAAO candidate case reports, posters, and publications and interview the candidates at the annual Academy of Optometry conference.

Past positions held :

  • Beta Sigma Kappa International Optometric Honor Society member
  • Michigan College of Optometry student ambassador
  • Lobbyist at the American Optometric Association Political Action Committee Congressional Advocacy Conference in Washington DC
  • President of the Pre-Optometry club at Michigan State University

Community service activities:

  • Ocular Workshop for St. Francis Physician’s Assistant students
  • Opening Eyes at Special Olympics Michigan
  • Relay for Life
  • Children’s Vision Day– Grand Rapids Children’s Museum
  • Currently a leader for a local Girl Scout Troop

Lectures / Presentations:

  • Purtscher’s-Like Retinopathy– Fort Wayne VA continuing education lecture
  • Optociliary Shunt Vessels – Fort Wayne VA continuing education lecture
  • Retinal Arterial Macroaneurysms – Fort Wayne VA continuing education lecture
  • Paracentral Acute Middle Maculopathy – Fort Wayne VA continuing education lecture
  • Birdshot Chorioretinopathy: A longitudinal case study – American Academy of Optometry, poster presentation; Denver, CO ; November 2014

Dr. Middleton is thrilled to be back in Grand Blanc, and looks forward to providing exceptional eye care to the community.


Eric L. Schweihofer, O.D., F.A.A.O.

In our Grand Blanc office

Dr. Eric Schweihofer is the only Residency-trained and Fellowship-trained optometrist in Southeastern Michigan. He brings experiences to our staff unlike any other optometrist. A native of St. Clair, Michigan, Eric graduated from the Michigan College of Optometry at FSU in 1998. He then elected to pursue an additional year of training at The Eye Institute of Pennsylvania College of Optometry. There he studied under specialists in Glaucoma, Retinal Disease, Neuro-Optometry, Pediatrics, and Emergency. He then completed a teaching fellowship at the School of Optometry in the Netherlands. This was followed by a year on faculty at the University of Auckland School of Optometry in New Zealand where he was a clinical instructor. Upon returning to the United States he moved to Grand Blanc to be close to family and friends.

Honors and Awards

    • 2007 Kiwanian of the Year – Grand Blanc Kiwanis
    • 2002 Fellow of the American Academy of Optometry.
    • Fellowship is granted to a select few optometrists after completing a rigorous application process and passing an oral examination by the Academy’s regional board.
    • 1998 Daniel Peterson Memorial Outstanding Senior Award.

Recognizes the graduate of the Michigan College of Optometry that has made the greatest contribution his or her class and school community.

  • 1998 George Holcomb Memorial Scholarship.
  • Awarded to the graduate of the Michigan College of Optometry that is most likely to contribute to educational advancement of the profession of optometry.
  • 1997 Student Leader of the Year.
  • Awarded the Michigan College of Optometry student that demonstrates the greatest overall leadership ability and contribution to student and professional life.
  • 1997 Ciba Contact Lens Clinical Excellence Scholarship.
  • 1997 American Foundation of Vision Awareness –Michigan Chapter Annual Scholarship.

Offices Held

  • Continuing Education Chair of the Michigan Optometric Association 2009- present
  • Secretary of Kiwanis Club of Grand Blanc 2007
  • Trustee of the American Optometric Student Association.


  • Type II Optic Tract Syndrome Secondary to Arteriovenous Malformation of the Brain. Poster presentation American Academy of Optometry 1999.


  • 2001 New Zealand College of Optometrists Spring Educational. Gonioscopy workshop.
  • As an Optometric Educator, Dr. Schweihofer has lectured on numerous disease states of the eye, pharmacology, and diagnostic procedures.


Daniel L. Markley, O.D.

In our Grand Blanc and Fenton offices

Dr. Daniel Markley brings to Grand Blanc a unique and extensive background in optometric experience/training. He is one of the few Residency trained optometrists practicing in this area.

Hailing from Coldwater, Michigan, Daniel is a 1998 graduate of the Michigan College of Optometry at Ferris State University. After a year of working along side an eye surgeon, he decided to pursue a year of additional training in the detection and management of ocular disease. This Residency training was completed at The Eye Institute in Philadelphia, Pennsylvania. The Eye Institute is one of the most highly recognized and well- respected optometric teaching facilities in the world. While there, Daniel trained under specialists in glaucoma, retinal disease, neuro-optometry, emergency care, pediatric and geriatric optometry. Following this extensive training, Daniel accepted a position on faculty at the University of Auckland School of Optometry in New Zealand. Here, he served as a clinical instructor for optometry students, as well as, lectured on the subject of eye disease. Following an August 2002 wedding, Daniel and his wife, Ann, settled in the Grand Blanc area to begin his career in private practice optometry.

Honors and Awards

  • 2002 Certificate of Completion for Primary Care Residency Training from The Eye Institute at The Pennsylvania College of Optometry.
  • 1997 Outstanding Extern Award, United States Air Force (Eglin Air Force Base, Florida)

Past Offices Held

President of Michigan Chapter of SVOSH (Student Volunteer Optometric Services to Humanity), a service organization dedicated to the preservation of sight and distribution of eyeglasses to impoverished nations. In 1997, Daniel helped to organize a humanitarian mission to the island nation of St. Lucia, where several thousand pairs of donated eyeglasses were distributed to those who would not otherwise have access to eyecare.

Dr. Lauren E. Ewald, OD

Dr. Lauren Ewald is a born and raised Michigander from the small town of Memphis. Dr. Ewald graduated with honors from Saginaw Valley State University with a bachelor’s degree in Biochemistry before moving to Bloomington, Indiana to attend Indiana University School of Optometry. After completing her externships at the Roudebush Veteran’s Administration Medical Center, Cataract and Laser Institute of Kokomo, Indianapolis Eye Care Center and Allisonville Eye Care Center, she graduated in 2023. During her time at Indiana University, Dr Ewald was a member of the Beta Sigma Kappa International Honor Society, the Pediatric Optometry Club and the Ocular Disease Club. She is excited to be back in her home state and is looking forward to serving her community’s eye care needs.