alarm-ringing ambulance angle2 archive arrow-down arrow-left arrow-right arrow-up at-sign baby baby2 bag binoculars book-open book2 bookmark2 bubble calendar-check calendar-empty camera2 cart chart-growth check chevron-down chevron-left chevron-right chevron-up circle-minus circle city clapboard-play clipboard-empty clipboard-text clock clock2 cloud-download cloud-windy cloud clubs cog cross crown cube youtube diamond4 diamonds drop-crossed drop2 earth ellipsis envelope-open envelope exclamation eye-dropper eye facebook file-empty fire flag2 flare foursquare gift glasses google graph hammer-wrench heart-pulse heart home instagram joystick lamp layers lifebuoy link linkedin list lock magic-wand map-marker map medal-empty menu microscope minus moon mustache-glasses paper-plane paperclip papers pen pencil pie-chart pinterest plus-circle plus power printer pushpin question rain reading receipt recycle reminder sad shield-check smartphone smile soccer spades speed-medium spotlights star-empty star-half star store sun-glasses sun tag telephone thumbs-down thumbs-up tree tumblr twitter tiktok wechat user users wheelchair write yelp youtube

Meet Our Doctors

Meet the experienced and friendly doctors who make Vision Source Titusville a proud provider of vision care products and services in Titusville.


Dr. Christopher L. Adsit, O.D.

The pulse of our practice beats from the heart of Dr. Christopher Adsit. Dr. Adsit believes in helping others, which is why he started his practice in 1996. Since then, it has grown and he is happy to now serve the Meadville, Titusville, and Oil City area. But his vision for helping others doesn’t stop at this practice! Dr. Adsit’s vision has always been to use his practice to help change the world, and he partners with you to make a difference. When you’re his patient, you are making a difference in this hurting world. 

Dr. Adsit graduated from the Pennsylvania College of Optometry in 1995 and specializes in medical eye exams. As Dr. Adsit’s patient, you’ll experience a thorough eye exam. Dr. Adsit carefully checks for signs of eye disease and explains these symptoms to you along the way.
You’re never in the dark as he guides you through your exam, answering your questions before you even ask. He’s always ready to help you achieve your best vision and is grateful for your partnership in enabling him to achieve his!
Outside of work, Dr. Adsit loves to read, run marathons, and spend time with his family.


Dr. Gary D. Hawk, O.D.

Dr. Hawk is a skilled optometrist who has been practicing for over forty years. After graduating from the Pennsylvania College of Optometry in 1974, his experience has guided him through running his own practice, treating patients both on the Island of Guam and in Erie, Pennsylvania, to now, caring for patients in our Titusville and Oil City locations.
Dr. Hawk’s knowledge, experience, and personable nature are an asset to our mission and practice. He’s attentive, detailed, and sure to care for you as if you’re his family.
When he’s not in the office, his hobbies include reading, working on home projects, and spending time with his wife, children, and grandchildren.


Dr. Dustin J. Mitchell, O.D.

Dr. Mitchell graduated from Clarion University with a BS in Biology and a Minor in Chemistry. He graduated from the Ohio State University College of Optometry in 2010 and is certified through the American Board of Optometry. In 2012, Dr. Mitchell joined us and has since built himself a reputation for being friendly, caring, and thorough. He believes in working hard and caring for others and as his patient, you’re sure to experience these qualities firsthand! Dr. Mitchell specializes in dry eye treatment, specialty contact lenses, and glaucoma care.
He’s thorough, calm, and helpful throughout your eye exam, and will be sure to answer your questions and explain to you the process as he examines your eyes.
In his free time, Dr. Mitchell loves hunting, running, riding ATVs, and time with his family.


Dr. Kassandra Espy, O.D.

Dr. Espy is from Franklin, PA. She graduated valedictorian of Rocky Grove High School in 2011, obtained a bachelor’s degree in Health Sciences from Gannon University, and graduated from the Pennsylvania College of Optometry at Salus University in 2018 where she received honors for clinical excellence in primary care and low vision.

After practicing in Norfolk and Chesapeake, Virginia, for six years, Dr. Espy is excited to return to her hometown and serve the community where she grew up.

Dr. Espy is passionate about educating her patients on their eye health and enhancing their quality of life by improving their vision and caring for their eyes.