11900 South Street, Suite 121 Cerritos, 90703

Schedule an


Monday-Friday: 9:30-5:30pm

Saturday: 8:30-2:30PM

Sunday: CLOSED

Covid Update

We are now open!

We are once again seeing patients  BY APPOINTMENT ONLY. Please contact the office before coming in to ensure that you can be seen.
For the safety and well being of you and our staff, we are implementing certain changes in office protocols:


Staff will be required to complete a daily health screening. Any team members who present symptoms or fail the screening will be asked to go home


Space between patients will be a minimum of 6 ft apart


To manage the number of people in our office, we’re seeing patients by appointment only


All surfaces, handles, and frames that are touched will be cleaned regularly throughout the day. We also installed MERV13 AC filter for added protection.
We ask for your continued patience and understanding. We are diligently adhering to state and CDC guidelines and together, with your cooperation, we can continue to deliver exceptional eye care in a safe and professional environment.
When you make an appointment, we will email you an instruction on what to expect when you arrive for your appointment. If you have any symptoms or risk factors of COVID19, we would be happy to schedule your appointment at a later date.
Please take note that the exam process may take a little longer than usual as we adjust to these new protocols as well. We will do our best to get you in and out as quickly and safely as possible. Please be considerate and understanding with our team members.
We look forward to seeing you again and want to thank you for being patient this past couple of months. If you have any particular requests or want to discuss any of the protocols please do not hesitate to call. See you soon!

Esther Ahn, O.D.

Esther Ahn Optometry Team



Our Services

Computer Assisted Eye Exams

We are a full service optometric practice with all new state-of-the-art equipment.

Ocular Disease and Injury

We are therapeutically certified to diagnose and treat many eye diseases.

Contact Lens Services

Complete Contact Lens Services Including All Specialty Lens Products.

Co-Management for Laser and Cataract Surgeries

When patients develop cataracts, optometrists can help them navigate the surgical course.

Frame Styling

For patients needing glasses, we carry a wide selection of eyewear and designer frames.


Monaco provides an exciting new way to enhance your clinical exam.

Individual Coverage

Need VSP coverage you can buy on your own? We’ve got individual plan options for you starting as low as $13 a month.

Ideal for:

• Retirees

• Self-employed or part-time individuals

• Those changing jobs

Our Practice
Dr. Esther Ahn

Dr. Esther Ahn

Dr. Ahn completed her undergraduate education at USC with a Bachelor of Science degree in Biological Sciences and received her Doctor of Optometry degree from SCCO(Southern California College of Optometry)in 2002.

While at SCCO, Dr. Ahn received the Dixon Scholarship awarded to the highest GPA and also received the Vision for Excellence Scholarship. She was a member of the Honor Society for four years and was active in the Student Association Board. She remains current in new advances in her field through professional associations including the American Optometric Association and the California Optometric Association. She prides in providing personalized, comprehensive vision care, including glasses, contact lenses, and vision correction therapy.

She takes the time to give her patients the attention and the information they need to make the best possible choice for their vision needs.

Dr. Amita Patel

Dr. Amita Patel

Dr. Amita Patel was born and raised in Cerritos, California and has remained committed to serving patients from her hometown. She attended Scripps College and received a Bachelor of Arts Degree in Biology. Dr. Patel pursued research interests upon her graduation on the Channel Islands with a Mellon Grant. She then earned her Doctor of Optometry Degree from Marshall B. Ketchum University ( formerly Southern California College of Optometry) in Fullerton, Ca. Dr. Patel provides primary care optometric needs for the entire family and fitting of contacts. Dr. Patel enjoys spending time with her husband and 2 children. They especially enjoy traveling the globe together.

Dr. Grace Cho

Dr. Grace Cho

Dr. Grace Cho was born, raised and obtained all her education in Southern California. After graduating from Sunny Hills High School in ’96, she received her Bachelor of Science degree at UCLA  and obtained her Doctor of Optometry degree from Southern California College of Optometry in 2004.  Upon graduation, Dr. Cho started working with Dr. Ahn with a joint goal to provide excellent eye care and to educate their patients with compassion and kindness.

Dr. Joanne Yoon

Dr. Joanne Yoon

Dr. Joanne Yoon graduated with honors from The University of Virginia with a Bachelor of Science degree Biochemistry.     She received her Doctor of
Optometry degree from Southern California College of Optometry (now MBKU)
and was a member of the Beta Sigma Kappa Honor Society. Dr. Yoon is certified
to practice optometry to the highest level which includes glaucoma treatment
and management, along with glasses, contacts, dry eye management,
orthokeratology/myopia control, and diabetic eye care. Dr. Yoon’s care
philosophy is to take time to listen to the patient’s needs and to keep up to date
with the latest technology and advancements in eye care in order to provide patients with the best comprehensive care.
Dr. Yoon is also actively involved in various philanthropy work locally and
internationally. In her spare time, she enjoys cooking and going to the beach.

Frame Styling

And Much More


What our Patients Are Saying

I’ve been going to Dr. Esther Ahn for over and her clinic provides the best customer service. They carefully make sure that glasses/contacts are comfortable and fit perfectly.

Their handling of COVID-19 has been splendid also. They follow the health instructions strictly so that your health and theirs are safe. Please have patience scheduling appointments with them during this time as it appears they can’t take as many patients in a day as before.”

Andy C

I went to doctor Ahn for more than 10 years, she always provide the best service you ever can get ! customer satisfaction it’s Always 😀😃😄

Linda L

I have been going to Dr. Ahn since I was a child. This office has always been welcoming. Just went in for my annual checkup post COVID and I am very impressed! They schedule only one patient per hour and to ensure their staff safety they have a health questionnaire and do a temperature check upon arrival. Per Dr. Ahn they rotate their staff and their doctors to ensure just in case someone gets sick it doesn’t affect their whole staff. As a healthcare worker myself, I appreciate what precautions have been put in place! Thank you Dr. Ahn!!”

Clare F

11900 South Street, Suite 121
Cerritos, CA 90703

Number: 562-809-4041

Fax: 562-372-8970​

Current Hours:

Monday, Tuesday, Thursday: Friday: 9:30-5:30pm 

Wednesday: Provisional

Saturday: 8:30-2:30

Sunday: CLOSED