Optical Illusions
AN OPTOMETRIC PRACTICE
The difference between seeing...and being seen


Meet our Doctors

We have three doctors between our two locations, ranging from recent graduates to 30+ years
of experience, and representing all three California Colleges of Optometry.

William Steiner, O.D.

Dr. Steiner is a Bay Area native. He graduated from the University of California at Berkeley with a degree in Economics and the Southern California College of Optometry where he earned his Doctor of Optometry degree with Honors. In 1982, he moved to San Mateo and Optical Illusions was born. Dr. Steiner's personal approach to patient care has built a large following over the past 30 years.

He is a past president of the San Mateo County Optometric Society, and had served many years on the Board of Directors of the SMCOS. He volunteers time at the Samaritan House, providing eye care service to the local community.

Dr. William Steiner
Michael Gatschet, O.D.

Dr. Gatschet grew up in Southern California and received a Bachelor of Science undergraduate degree from U.C. Riverside and U.C. Berkeley. His Doctor of Optometry degree is from the U.C. Berkeley School of Optometry.

Associated with Optical Illusions for more than 20 years, Dr. Gatschet has enjoyed providing exceptional service and quality eye care to Silicon Valley patients throughout his career. He specializes in prescribing glasses and contact and providing pre-LASIK and post-LASIK care for patients. Dr. Gatschet has also participated in Flying Doctors volunteer vision clinics for the poor in Mexico, Belize, Fiji, Kenya, Tanzania, Ecuador and Guatemala.

In his free time, Dr. Gatschet enjoys going to the gym, snow skiing, golf, hiking, camping, whitewater rafting and is an avid reader. He travels when he can, mostly to warm places where he can snorkel, scuba dive, and enjoy the sun.

Dr. Michael Gatschet
Peggy Zhu, O.D.

Dr. Peggy Zhu graduated from Western University of Health Sciences after completing her undergraduate studies at University of California, Riverside. She was an optician at Optical Illusions for two years prior to pursuing her Doctorate. The joy she received from helping people see the world better inspired her to become an optometrist.

Dr. Zhu's clinical training includes externship programs at Hu Hu Kam Memorial Hospital in Arizona, rural community health centers in Nipomo and Atwater, California, and Family Eye Care in Lemoore. She is fluent in English, Cantonese, and Mandarin and enjoys seeing patients of all ages.

In her free time, she enjoys hiking, traveling, and cheering for the Golden State Warriors.

Dr. Peggy Zhu
Katalina Yandell, O.D.

Dr. Katalina Yandell received her Bachelors of Science in Biology from Northern Arizona University where she found that she loved to not only challenge herself, constantly striving to be the best in each of her classes, she also loved helping others, giving back to her community and travelling. Dr. Yandell, who is a native Seattleite, jumped on the opportunity to live in sunny Southern California to receive her Doctorate in Optometry from Western University of Health Sciences where she received numerous awards for her achievements in political activism, leadership among her peers and passion for private practice optometry.

Dr. Yandell looks forward growing with the Optical Illusions team to bring in new and exciting programs that will continue to benefit their already amazing patient base.

In her spare time, she enjoys reading books, traveling to new places with her friends and playing with her cute cat Zedd.

Dr. Katalina Yandell



Open evenings and weekends, 7 days a week! Schedule an exam today!
Optical Illusions of San Mateo
194 Hillsdale Shopping Center
San Mateo, CA 94403
T: (650) 341-8080
F: (650) 341-8565
OISanMateo@gmail.com

Mon-Sat 10am-9pm
Sun 11am-7pm

Optical Illusions of San Jose
378 Santana Row, Suite 1025
San Jose, CA 95128
T: (408) 261-1010
F: (408) 261-1080
OISanJose@gmail.com

Mon-Fri 10am-8pm
Sat 10am-7pm, Sun 11am-6pm