our doctors


Surgical Director

As an eye surgeon, Dr. Petelin is uniquely qualified. He received his medical degree from the University of Arizona and completed his Ophthalmology training at Emory University. Even more importantly, Dr. Petelin is one of only a handful of vision correction specialists fellowship trained in Cornea and Refractive surgery.

Locally, Dr. Petelin is recognized by his peers for providing top-level surgical eye care. He lectures frequently on topics pertaining to new technology and is consulted by valley doctors on difficult and challenging cases.


Dr. Eugene Shifrin

Medical Director

Petelin Vision is proud to announce that Dr. Eugene Shifrin has joined our practice, bringing with him, his vast knowledge and experience, as well as his high level of patient care.

Dr Shifrin believes that excellent patient care starts with a doctor’s ability to listen and understand the needs of their patients, and is a firm believer that establishing a trusting “doctor / patient” relationship is paramount and essential—leading to better outcomes.

Dr. Shifrin was one of Arizona’s first Board Certified Optometrists and is known for his desire to bring his patient’s leading edge eye care, while exceeding the expectations of both patients and referring doctors alike.

Dr. Stanley R Shorb

Dr. Stanley R Shorb MD is a university fellowship trained retinal specialist who has been actively practicing, in Phoenix, for forty plus years. He is board certified ophthalmologist and lifetime American Academy of Ophthalmology member.  Dr. Shorb was a Lieutenant Colonel in the US Army and a flight surgeon. He is an examiner for the American Board of Ophthalmology and we are happy to welcome him to our Scottsdale location.


Dr. Tara Ransdell

Dr. Tara Ransdell grew up in northern Minnesota. She did her undergraduate studies at University of North Dakota, while playing on the women’s basketball team. From there, Dr. Ransdell moved to Chicago, to attend the Illinois College of Optometry. In 2000, she graduated from ICO and took a position with Kirk Eye Center in River Forest, Illinois.

While in Chicago, Dr. Ransdell developed a love for running and ran her first of 18 marathons on the streets of Chicago. In 2003, she moved to Glendale, AZ with her husband, Dr. Jason Ransdell. In 2004, their daughter, Jordan, was born. Dr. Tara Ransdell purchased Peoria Eye Care in 2005, which is now Petelin Vision. All of the Ransdells enjoy competitive sports and now enjoy playing golf together as a family.

Dr. Jason T. Ransdell

Dr. Jason T. Ransdell was born and raised in northern Minnesota. He earned his Bachelor’s degree in Microbiology from Colorado State University before graduating from the Illinois College of Optometry in May, 2001.

Dr. Jason competes in local triathlons and mountain bike races when he isn’t seeing patients. He recently completed Ironman Arizona and has finished the Leadville Trail 100 mountain bike race the past 3 years in Leadville, CO.

Dr. Jason worked at a local cataract and laser center for 4 years before joining our practices. He brings extensive knowledge about Lasik and cataract surgery to the practice. Dr. Jason also performs routine eye examinations for glasses and contacts, as well as the treatment and management of diseases, such as Glaucoma, Diabetes, Macular degeneration, etc.

Dr. Jason lectures in the western United States on dry eye treatment, and is a consultant to Allergan and Inspire Pharmaceuticals.

Derek Jacobsen

Dr. Derek Jacobsen grew up in Glendive, Montana. Dr. Jacobsen is a third-generation eye care profes- sional. His grandmother was an optician and his father is an optometrist. He values the primary care role of optometry and one-on-one interaction with patients of all ages, as well as being able to work closely with other healthcare providers to manage more complex eye problems. Dr. Jacobsen has a strong interest in managing glaucoma, diabetic eye issues, and other eye diseases.

Dr. Jacobsen earned his Bachelor of Science in Kinesiology from Montana State University in Bozeman, Montana. He then graduated with honors with Doctor of Optometry from Arizona College of Optometry, where he served as an Optics research assistant and the President of the Arizona branch of the Beta Sigma Kappa optometric honor society. After earning his doctorate, Dr. Jacobsen completed an added residency in ocular disease at Hu Hu Kam Memorial Hospital in Arizona, which is the primary care facility of the Gila River Indian Reservation. This residency provided him valuable experience in treating a variety of eye diseases and developed a strong interest in managing glaucoma and diabetic complications. Working at Hu Hu Kam Memorial Hospital allowed Dr. Jacobsen to become well-versed on the impact of diabetes on eye health.

Dr. Jacobsen is a member of the Arizona Optometric Association, American Optometric Association, and Montana Optometric Association. He is licensed with both the Arizona Board of Optometry and Montana Board of Optometry.

Dr. Jacobsen has provided numerous youth vision screenings throughout Arizona. He has been a frequent volunteer for the annual American Diabetes Association Step-Out Walk. He has lectured at conferences in California and Arizona, providing continuing education for fellow eye care professionals. He has also been a preceptor for optometry students as they perform clinical rotations.