Taking Care of You Since 1987

WELCOME TO Mosier Eye Center

We treat our patients as we would treat our own family. We offer high-quality, friendly service in a gentle, caring atmosphere. Our patients are the heart of our practice and the reason we are here.

WHAT WE OFFER Featured Services

Comprehensive Eye Exams

Routine eye exams are a vital aspect of preventive eye care. Without routine eye exams, vision issues often go undetected since most eye disorders don't have clear symptoms.

​​​​​​​Dry Eyes

Dry Eye can have a major impact on your quality of life. You may find your eyes get tired faster or you have difficulty reading. Not to mention the discomfort of a burning sensation or blurry vision. Let’s take a look at dry eye treatments – from simple self-care to innovative prescriptions and therapies – to help you see clearly and comfortably.

Cataracts

You have almost certainly heard of diabetes, which is one of the most common chronic health conditions in the United States with an estimated 100 million adults currently living with diabetes or pre-diabetes.

Contact Lenses

If you’ve never worn contact lenses before, it can seem a bit intimidating. After all, you’re inserting something into your eye! Let’s ease your mind about the first step – your contact lens exam. This post will walk you through what’s involved in a contact lens.

Glaucoma

If you’ve been diagnosed with glaucoma, you’re probably already familiar with the typical options in glaucoma treatment – eye drops, laser treatment or traditional surgery. 

Optical Services

Selecting your eyewear is an important decision. Not only in how your glasses look, but also how they function and feel. That is why we offer the best eyewear selections. 

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Dr. William D. Mosier, MD

Ophthalmologist

Dr. William D. Mosier is a board certified ophthalmologist specializing in Comprehensive Ophthalmology. Dr. Mosier is also a very accomplished and highly skilled cataract and anterior segment eye surgeon with extensive experience in the diagnosis as well as the treatment of eye diseases.

Meet Our Doctors

Dr. Mai Pham, MD

Ophthalmologist

Dr. Mai Pham is a highly respected, accomplished, board-certified, Comprehensive Ophthalmologist and fellowship-trained Cornea Subspecialist, with extensive training and experience in the medical and surgical treatment of eye disease.

Meet Our Doctors

Dr. Christina Leung, OD

Optometrist

Dr. Leung was born and raised in San Francisco but now calls Orange County her home. She earned her Bachelor of Science degree in molecular cell biology from the University of California, Berkley before earning her Doctor of Optometry degree, graduating Beta Sigma Kappa from the Southern California College of Optometry.

Meet Our Doctors

Dr. Matthew Y. Nobe, MD

Ophthalmologist

Dr. Matthew Y. Nobe is a board-certified ophthalmologist who joined Mosier Eye Center in August 2025. With over a decade of experience in comprehensive eye care, he is known for his thoughtful, patient-centered approach and commitment to clinical excellence. After 11 years of practice in New York, Dr. Nobe returned to his roots in Southern California..
 

Meet Our Doctors

Insurance We Accept

Susie H.

I've been a patient at Mosier Eye Center for approximately four years. This is a busy facility and the wait times can be long however on my visit yesterday that was not the case. I was called back just a few minutes after my appointment time. The assistant ( I believe her name was Joanne?) was so kind, super friendly and very knowledgeable. 

Richard D.

Excellent professional treatment. Helpful knowledgeable staff. Dr. Mosier is very open and communicative. All questions are handled immediately and answered in full. All staff members are cordial and helpful. They make sure you are comfortable accommodated during the visit. I would recommend Mosier Eye Clinic to anyone.

Leslie F.

I was called by the staff only moments after arriving. I was then taken for different tests before seeing the optometrist. The staff was very professional and thorough. The optometrist introduced herself and performed the necessary eye exam with expertise. I also conversed with the optometry staff regarding my optical prescription. She was very cordial as we discussed my options.

Cynthia W.

It's been two years since Dr. Mosier performed my cateract surgery and my sight is still perfect. Dr. Mosier is so caring and always takes time to explain procedures in layman terms. The staff is so friendly and efficient, the office is immaculate. I highly recommend Mosier Eye Center.

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D M.

Had a great lipiflow procedure with Megan. She prescribed some eye drops for two weeks after. It took four hours to get the office to correctly send over the prescription to my pharmacy. The pharmacy called twice and I also called twice. There needs to be better communication on this issue.

Delina D.

My visit to Mosiier Eye Center was a very good experience. Nice receptionist. Welcoming environment. The doctor & assistants helped me get through my eye exam in a comfortable, friendly, and professional manner. I highly recommend their service and expertise.👓 🤩👌

D.W.

Long time patient. Their staff is amazing. From the front desk to the Doctors. Dr. Mai Pham has been my Dr. for several years. She is knowledgeable, caring and very kind.

Neeta P.

I had a very pleasant experience at my complete eye exam recently at the Mosier eye center. The staff is very courteous, and the Doctor very thorough with excellent bedside manner. I highly recommend this Opthalmology office.