Our Team

In our Fenton and Grand Blanc 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. Logan Oostdyk was born and raised near Grand Rapids, MI. He completed his undergraduate studies in biology at the University of Detroit Mercy, while his Doctor of Optometry degree was earned at The Michigan College of Optometry (MCO) at Ferris State University, where he graduated with highest honors.

Dr. Oostdyk then pursued a postgraduate residency in ocular disease at the Louis Stokes Veterans Affairs Medical Center in Cleveland, OH - one of the largest VA hospitals in the country.

During his residency in Ohio, Dr. Oostdyk practiced full-scope medical optometry and trained under prominent specialists in the areas of retinal disease, specialty contact lenses (with a focus on scleral contact lenses), and low vision/blind rehab.

He has a particular interest in uveitis and retinal diseases including macular degeneration, diabetic eye disease, and central serous chorioretinopathy.

Dr. Oostdyk is happy to be back in Michigan, and looks forward to serving patients in the Grand Blanc area.

Honors and Awards:

• 2025
  Eschenbach Student Award for Excellence in Low Vision

• 2025
  Dr. Walter Betts Memorial Award

• 2024
  American Board of Optometry: Student Case Challenge 3rd place winner

• 2024
  CooperVision Contact Lens Excellence Award

Lectures/Presentations:

• 2026
  Snap, Crackle, and Pop: Ocular Crepitus Resulting from an Orbital Fracture.
  The Ohio State University College of Optometry: Resident Scholarship Day Presentation.

• 2026
  Non-Arteritic Ischemic Optic Neuropathy
  Louis Stokes Cleveland VA Medical Center: Continuing Education Lecture.

• 2026
  Ocular Myasthenia Gravis: A Fatiguing Diagnosis
  University Hospitals Department of Ophthalmology and Visual Sciences; Cleveland, Ohio.

• 2025
  Orbital Blowout Fractures: A focused review for optometrists
  Louis Stokes Cleveland VA Medical Center: Optometry Grand Rounds.

• 2025
  Optometric Management of Central Serous Chorioretinopathy in an Elderly Patient
  Louis Stokes Cleveland VA Medical Center: Optometry Grand Rounds.

• 2024
  Stargardt Disease
  Midwest Vision Partners: Grand Rounds Case Report; Flint, MI. • 2024 Entropion Wyoming VA Community Based Outpatient Clinic: Optometry Grand Rounds.

• 2024
  Ocular Toxoplasmosis: A Case Report
  Wyoming VA Community Based Outpatient Clinic: Optometry Grand Rounds.

• 2023
  Diagnosis and Management of Pigment Dispersion Syndrome in a Young Adult
  Michigan College of Optometry: Grand Rounds Seminar Case Report