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Doctors & Staff

Meet the experienced and friendly doctors and staff who make Alicia Valencia Eyecare Center of Optometry a proud provider of vision care products and services in Laguna Hills.


Dr. Kim O. Nguyen, OD

Dr. Kim Nguyen is a 2002 graduate of the Southern California College of Optometry in Fullerton. She has been a resident of the Saddleback Valley community for twenty five years. She graduated from the local elementary, junior high, and high schools.

She has been practicing in Garden Grove, Santa Ana, and now, Alicia Valencia Eyecare Center. Dr. Nguyen resides in Lake Forest with her husband, Anthony, and her daughters, Kaylin, Madison and Audrey.

She attends St. John the Baptist Church in Costa Mesa. She spends most of her spare time with family and friends and if time allows, she enjoys reading. Dr. Nguyen’s main expertise is general ocular health, contact lenses, and treatment and management of ocular diseases.

She is therapeutically certified to treat eye diseases by the state of California. She especially enjoys working with children and performs thorough ocular examinations with a personal touch for all of her patients.  She is a Paragon CRT certified optometrist, CRT is an alternative to refractive surgery and also used for myopic control.  She is also an NVision Refractive Surgery Affliate who comanges refractive surgery with Dr. Thomas Tooma, MD

Dr. Nguyen is available for appointments Tuesday through Saturday.


Dr. Randall R. Alessi, OD

Dr. Randall Alessi is a 1987 graduate of the Ohio State College of Optometry. He has been a resident of South Orange County since 1990 and has practiced in Mission Viejo and Westminster, CA.

Dr. Alessi resides in Laguna Niguel with his wife, Bethany, his daughter, Shelby, and his son, Zachary. He attends Saddleback Church in Lake Forest and is a member of the Mission Viejo Elks Lodge #2444. He has assisted the Flying Samaritans providing much needed eyecare to underdeveloped areas of Mexico. He is also very proud to be a strong supporter of the Cystic Fibrosis Foundation. He enjoys playing softball and golf.

Dr. Alessi has extensive experience with all types of contact lenses. He also is very patient with children and performs one of the most thorough ocular examinations patients report they’ve ever had.

Dr. Alessi is therapeutically certified to treat eye diseases by the state of California and has the latest treatment for dry eye complications.

Based on Dr. Alessi’s research of the top LASIK surgeons in Orange County and from his own experience in peri-operative care, he is a leading Laser Refractive Surgery Affiliate for over 17 years working with Dr. Thomas Tooma, M.D. in Newport Beach.

He is also certified as a Paragon CRT licensed optometrist. Viewed as a LASIK alternative, this nonsurgical procedure frees patients from their correction during the day by wearing a retainer lens device at night.