We appreciate your understanding during these unprecedented times. We are doing our best to comply with recommendations from the CDC, the government, and the American Academy of Ophthalmology regarding scheduling appointments and social distancing. At this time, we are addressing only urgent and emergent eye conditions in our office. 20/20 Optical WILL BE CLOSED until further notice. If you have a routine exam or are calling about a non-urgent issue, please wait to contact us for a few weeks while we adjust schedules. Our front desk is working very hard to get patients visits according to urgency and severity of eye conditions, so minimizing non urgent phone calls will help us work faster to help those that are the most in need of assistance. Thank you again to all our loyal patients, and we hope everyone is staying home and staying healthy!
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Welcome to

Ophthalmology Associates

A private practice dedicated to providing excellence in eye care
offering a full range of eye care services including complete eye exams, 
sophisticated laser surgery, LASIK and the most advanced technology
in cataract surgery.

Pediatric Eye Care20/20 Optical

Meet Dr. Nathan Carpenter

Dr. Carpenter specializes in comprehensive eye examinations and surgery for adult and pediatric patients.

Learn About LASIK

Our doctors have vast experience performing LASIK surgeries. We would be more than happy to provide further education on LASIK.

Special Financing Promos

We can help you get the vision care you want and need with Wells Fargo, Care Credit, or Alphaeon’s convenient payment plans.

Ophthalmology Associates

Who We Are


Welcome to Ophthalmology Associates, a private practice dedicated to providing excellence in eye care. We offer a full range of eye care services from complete eye exams to sophisticated laser surgery including LASIK and the most advanced technology in cataract surgery. You will find our staff friendly and knowledgeable with your eye health our number one concern.

Ophthalmology Associates has been serving the greater Mankato area for over 50 years. We presently have four highly trained ophthalmologists with an exceptional support staff to serve your medical and surgical needs.


20/20 Optical

At 20/20 Optical, we carry designer frames with local prices. In addition to eye glass frames, we carry a wide variety of contact lens styles and brands. Our knowledgeable staff with a combined average of 25+ years of experience in the industry will help you select the right frames or contact lenses for your needs and lifestyle. Whether your prescription is from Ophthalmology Associates—located in the same building as 20/20 Optical—or from another practice, we are here to help.

Free Maui Jim Sunglasses!

Any patient that receives a LASIK procedure performed by Dr. Emily Birkholz or Dr. Justin Kuiper will receive one free pair of Maui Jim sunglasses*! We offer interest free financing through Wells Fargo for up to three years! Learn More

*Up to $299 value. Exclusions apply, see clinic for details.

Patient Satisfaction Survey

We want to be confident that we are providing you with first class care along with special and personal attention. To accomplish this, we need your input. Your concerns and suggestions are important to us, and we are asking you to take a few minutes to complete our Patient Satisfaction Survey.

"I love that I see better now than I ever have before! I can see better than I could with my contacts or glasses."


If you are in doubt about placing a call for your next eye appointment, this is the place. The doctors and staff are very caring and compassionate.


We feel 20/20 Optical offers the very best in friendly, professional and personalized assistance. We have been visiting 20/20 Optical for our eyewear for many years.

Mike & Cindy

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Request An Appointment


For more than 50 years, Ophthalmology Associates has provided personal attention to our patients and the very best in eye care services. Our physicians, technicians and patient staff personnel are committed to making your visits comfortable and convenient while offering a wide range of services and specialty expertise. Please contact us with your desired appointment time and information and we will contact you to schedule your next appointment. We look forward to your visit.

LASIK Surgery


We will contact you via phone to confirm a date and time and schedule your appointment.

LASIK Appointment Request