Bill Henshaw, OD, FCOVD

Bill Henshaw,  OD, FCOVD Dr. Henshaw grew up outside Boston and attended Pacific University near Portland Oregon. In 1972 he took over a practice that was established early 1900's.

Developmental Optometry, Vision, Therapy, Visually related learning difficulty, Sports Vision, Light Therapy, Lens Therapy, Contact Lenses, Customizing of eyeglasses He served five years as an Army optometrist during the Vietnam War at Walter Reed Hospital in Washington, D.C. Dr. Henshaw has a specialty in vision therapy and is a member of the College of Optometrists in Vision Development as well as the College of Syntonic Optometry. He has special training in vision and computers, visually related learning problems, sports vision, orthokeratology, visually related traumatic brain injury, and light therapy. He is a member of the Optometric Extension Program, a past president of the San Joaquin Optometric Society, and a twenty-five-year member of the American Optometric Association. He was active in Junior Achievement, and was chairman of the Governmental Affairs Committee for the Lodi chamber of Commerce. As a Rotarian in the Lodi-Tokay Rotary club he served as secretary and the Dial-A-Ride committee chairman and is a club designated Paul Harris Fellow. Dr. Henshaw hosted The Vision Excellence Hour - with An Eye toward Prevention on KCBC radio 770 AM for three years. Judy, Dr Henshaw’s wife is a retired real estate broker and between them are 7 adult children and 16 grandchildren. He has interest in aerobics, cooking, hiking, photography, and reading. He attends a local Christian Church and authored What Would Jesus See - a developmental optometrist’s journey through vision care with an eye on the Bible available on Amazon, Vine & branches, Innovation Church, and our office.

What does 20/20 mean?It is a measurement to your clarity of sight.  It means what the normal person sees at 20 feet (one...
03/03/2026

What does 20/20 mean?

It is a measurement to your clarity of sight. It means what the normal person sees at 20 feet (one degree of arc), you also should see at 20 feet. The top number is always the same-the standard. The bottom number is yours. The smaller the bottom number, the more clearly you see. The number 20/200 means what the normal person can see at 200 feet, you must move up to 20 feet to see the same image. The number 20/40 means what the normal person can see at 40 feet, you must move up to 20 feet to see the same image.

Headaches, oh those headaches!  Have you probably thought the headaches may be your sibling’s nagging, the beginning of ...
02/27/2026

Headaches, oh those headaches! Have you probably thought the headaches may be your sibling’s nagging, the beginning of a cold, or allergies? Certainly all could be a factor. But have you thought of your eyes? Certainly the mandated Zoom school learning caused many a headache. Have you bumped your head or been in an automobile accident, burnt the midnight oil, been studying or working extra hard? Give us a call at 334-2020. We might be able to help.

Lens therapy glasses can help reduce eyestrain in children—especially from digital devices. Dr. Bill Henshaw, a developm...
02/26/2026

Lens therapy glasses can help reduce eyestrain in children—especially from digital devices. Dr. Bill Henshaw, a developmental optometrist with decades of experience and advanced digital vision training from UC Berkeley College of Optometry, uses lens therapy to support learning, desk work, and visual comfort while helping prevent worsening eyesight. Learn more at drhenshaw.net

The often-quoted statistic that 25% of children are failing in school tells only part of the story. It excludes the many...
02/25/2026

The often-quoted statistic that 25% of children are failing in school tells only part of the story. It excludes the many students who struggle daily just to remain in the other 75%. It also ignores high-achieving A students who may be overworking, compensating, and silently taxing their visual system and overall health. Academic success does not always mean visual efficiency. Hidden vision problems can affect struggling students and top performers alike. Go to drhenshaw.net.

Is black all that blind people see? No, the majority of people can see objects, they are just not as clear as they shoul...
02/23/2026

Is black all that blind people see?

No, the majority of people can see objects, they are just not as clear as they should be. Visual acuity of 20/200 is considered blind. Some people have 20/20 visual acuity but are still blind because their side vision is reduced to less than 15 degrees. See Blake Mutschler's story at drhenshaw.net.

At least 80% of learning takes place in our vision system. . Vision may be a factor if your child struggles with school....
02/20/2026

At least 80% of learning takes place in our vision system. . Vision may be a factor if your child struggles with school. Countless studies demonstrate the relationship between vision and learning. You may view some of them under “Research in vision therapy” at drhenshaw.net. Meanwhile, give us a call at 209-334-2020.

“I’ve been told Medicare doesn’t pay for a vision exam. Is that true?”Not exactly.Since its beginning, Medicare has cove...
02/18/2026

“I’ve been told Medicare doesn’t pay for a vision exam. Is that true?”
Not exactly.
Since its beginning, Medicare has covered medical eye care. While routine refractions for glasses are not covered, most patients — including those under 65 who qualify for Medicare — are found to have a medical eye condition during their exam that is eligible for Medicare coverage.
You’ve paid into Medicare through years of work, and it remains an excellent medical benefit. We accept Medicare and honor the approved fees as payment in full, with only a small non-covered portion when applicable.
Learn more at drhenshaw.net

A solution for young learners.What’s wrong with this picture?A close look shows a child is inches from her book, head ti...
02/14/2026

A solution for young learners.

What’s wrong with this picture?
A close look shows a child is inches from her book, head tilted, one eye blocked by her nose. Hours of close work like this can lead to eyestrain, headaches, stomach aches, eye turns—and increasing nearsightedness even at young ages.
Preschool and kindergartners today do intense near work once expected years later. Vision problems are emerging earlier, and many are preventable. It doesn’t have to be this way.
A practical 2-Step Plan:
1 Test your child to see if protective lenses for near work would help.
2 Strengthen vision skills with simple, home-assisted activities based on Dr. Gerry Getman’s work.
Give your child relief now—don’t wait for educational reform. Contact our office to begin your child’s two steps toward healthier vision and better learning. We hope you have enjoyed this Pre-School series. The full story is at drhenshaw.net

A solution for young learners.International experience reinforces the value of a developmentally informed approach. Scan...
02/14/2026

A solution for young learners.
International experience reinforces the value of a developmentally informed approach. Scandinavian countries, which consistently achieve strong academic outcomes, often delay formal reading instruction until children are visually and neurologically ready—typically around age seven. Notably, much of the research guiding these policies was conducted by American educator George Spache. His studies showed that children who began reading before age seven were often ahead by fourth grade, while those who started later frequently surpassed their peers by high school, when reading proficiency is most critical. Full story at drhenshaw.net (To be continued tomorrow)

A solution for young learners.Developmental optometrists have long focused on helping children reduce unnecessary visual...
02/12/2026

A solution for young learners.
Developmental optometrists have long focused on helping children reduce unnecessary visual strain and, in many cases, prevent the early onset of nearsightedness. One effective strategy has been the use of learning glasses, or lens therapy, to support the visual system during close work. These clinicians also partnered with the Gesell Institute to inform classroom design, addressing factors such as furniture size, posture, lighting, and visual spacing to minimize visual stress and distraction. Full story at drhenshaw.net (To be continued tomorrow)

What happens between fun at home and kindergarten?Historically, nearsightedness typically appeared around fourth grade, ...
02/11/2026

What happens between fun at home and kindergarten?
Historically, nearsightedness typically appeared around fourth grade, when children shifted from learning to read to reading to learn, and when their visual systems were more mature.
Today, similar close work demands begin much earlier, while the eyes are still developing. This may help explain why nearsightedness is showing up at younger ages—and why it’s worth thoughtfully balancing early academics with healthy visual development. Full story at drhenshaw.net (To be continued tomorrow)

02/11/2026

Is your child a "smart" kid who just can't get the grades? 📉
We often see a heartbreaking gap: children with high verbal intelligence and great curiosity, but low reading scores and slow written output. This discrepancy is a classic sign of a vision problem. Their brain is ready to run, but their visual system is walking.
Dr. Benny Shao helps bridge this gap. We don't just teach them "how" to learn; we give them the visual tools to do it efficiently. Don't let a label define their future.
📞 Schedule an evaluation: (408) 837-7380 📍 San Jose, CA

Address

801 S. Fairmont AV Ste 5
Lodi, CA
95240

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 8am - 5pm
Friday 8am - 5pm

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