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Gregory Pacelli MD, PhD

Gregory Pacelli attended medical school at the University of Illinois at Chicago after having received his Bachelor of Science in Biological Sciences at the University of Illinois at Urbana-Champaign. In addition, prior to completing his medical degree, Dr. Pacelli completed a thesis on learning and memory earning his doctorate in Philosophy (PhD) at the University of Illinois at Chicago.


Dr. Pacelli's post-graduate training includes an internship performed at Illinois Masonic Medical Center, a residency in Phthalmology performed at the University of Illinois at Chicago, and a fellowship in Pediatric Ophthalmology and Strabismus performed at the University of Colorado Health Sciences Center.

Subsequent to completing his training, Dr. Pacelli held academic positions at Louisiana State University (Director of Pediatric Ophthalmology, Assistant Professor) and Children's Surgical Foundation and Northwestern University (Clinical Assistant Professor).

Dr. Pacelli's areas of clinical interest include all facets of pediatric ophthalmology including strabismus (crossed or wandering eyes), blocked tear ducts, amblyopia (poor vision due to improper brain development of the visual pathway), diseases of the eye due to prematurity (retinopathy of prematurity), and infantile cataracts.

Dr. Pacelli is a Board-Certified Ophthalmologist and is a member of the American Academy of Ophthalmology. Diplomate, American Board of Ophthalmology Specializing in Adult & Pediatric Ophthalmology

Our Staff

Paula Ihnat, COO

Majid Rassouli, DO

Candy Schlesinger, CFO

Ankit Desai, MD

Gregory Pacelli MD, PhD

Samra Hashmi, MD

Eligius Lelis, MD

Experience you can count on. 

Our team has a combination of  over 100 years of experience. We have the training, knowledge and experience to provide you with the very highest level of care.

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How often should I visit my ophthalmologist?

​If you have a history of eye disease, we recommend making regular appointments and following up as your ophthalmologist advises. Call now for more information or to schedule an appointment.

​Can I bring a friend with me to my ophthalmologist appointment?

​You are always welcome to bring a friend or family member with you to your appointments.  An extra set of ears is always helpful so you don’t forget any important information your ophthalmologist goes over with you during your appointment. 


How do I know if I should schedule an ophthalmologist appointment?

​If you are having eye discomfort or trouble with your vision, schedule an appointment with your ophthalmologist. Health conditions, like high blood pressure or diabetes, increase your risk for certain diseases. If you have questions or think you might need to see an ophthalmologist, call for more information.


Do your ophthalmologists have tips on how I can protect my eyes?


​Don’t forget to wear protective eyewear during activities like mowing the grass, doing construction work, or playing sports.  If you wear contacts, take steps to prevent eye infections. Wash your hands before handling your contacts or touching your eyes, and be sure to replace them regularly.


When should I arrive at my ophthalmologist appointment?


​We ask that you arrive at your eye appointment fifteen minutes early. That gives you time to fill out any necessary paperwork before your appointment with your doctor. 


What should I bring for my ophthalmologist appointment?


​You will need to bring your insurance information. If you have a referral from your primary care physician, please have that with you if you haven’t already sent it to us. And lastly, bring a list of all medications you are taking.


Can your ophthalmologists perform LASIK? What can I expect?


​One of our most popular procedures at Spectrum Eye Institute is LASIK surgery. An outpatient procedure, LASIK surgery corrects the vision of patients who are nearsighted, farsighted or have astigmatism. Call now for more information or to see if LASIK might be right for you. 


Does your ophthalmologist office offer cosmetic services?


​Though ophthalmologists are known for medically necessary services, we also offer cosmetic procedures and services to help you look and feel your best. We offer Botox Cosmetic treatments that smooth deep wrinkles and crows’ feet around your eyes. Call our offices for more information and to schedule a consultation.

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