Our Location & Hours

Our Location & Hours

Optometrist, San Ramon, Optometric Center & Eyewear Galleria

2551 San Ramon Valley Blvd.
Suite #101
San Ramon, CA 94583 View Map

Mon, Tue, Wed, Thur: 9:00am - 6:00pm
Friday 10:00am - 5:00pm




By Michael Duong, OD, FAAO

What is amblyopia?


Amblyopia is decreased vision in one or both eyes due to abnormal development of vision during infancy or childhood. The decreased vision is a result of the nerve pathways that connect the eye to the brain are not properly stimulated. This results in the brain “learning” to see only blurry images.  This often happens in one eye and is often called the “lazy” eye, with the other eye seeing better.  However, amblyopia can occur in both eyes.  


What causes amblyopia?


The most common cause is young children not getting the proper vision correction in early childhood resulting in poor development of visual function in the affected eye(s).  This is called refractive amblyopia.  Another common cause is strabismus or eye misalignment.  This can result in one or both eyes turning in, out, up or down due to a weak eye muscle (crossed eyes).  Lastly, a rare cause for amblyopia is that light is being blocked by a structure like a cataract, scar on the cornea or droopy eyelid.  This is called deprivation amblyopia.  


How is amblyopia treated?


Refractive amblyopia - occurs when there is a large or unequal amount of prescription between the a child’s eyes.  The child may not complain because the child may be seeing well with the better seeing eye.  Also, the amblyopic eye may not look different from the normal eye.  The treatment is consistent wear of glasses and/or contact lenses to provide a clear image to the brain.  The brain is “used to” see blurry with the amblyopic eye and must learn how to see better now that a clearer image is provided by glasses or contact lenses.  Follow-ups are needed to monitor for vision improvement.  


Strabismic amblyopia - occurs when one or both eyes turn in, out, up, or down.  This can create confusion and double vision.  Overtime, the brain learns to compensate by “turning off” the lazy eye which can lead to permanent reduction of vision in one eye.  Strabismus usually develops in infants and young children, most often by age 3.  Treatment of strabismus includes eyeglasses, prisms, vision therapy, or eye muscle surgery.  


Early detection and treatment is essential to preventing vision loss in children due to amblyopia.  None of these treatments guarantee 20/20 or “perfect” vision but not treating will result in poor visual function.  However, if treated early and consistently, the child will be able to function and lead a normal life.  


Call our office today 925-743-1222 to schedule your child’s eye examination.  We see patients as young as 6 months of age.  



By Michael Duong OD, FAAO


I routinely hear from patients that I see a spot or a floater in my vision.  Floaters are a semi-transparent or cloudy particle within the vitreous, which is a clear, jelly-like fluid that fills the inside of our eyes. The floaters can appear as threadlike strands, or cobwebs.  They move or “drift” with your eye movements as they are located inside the eye.  


When we are born and in our youth, the vitreous has a gel-like substance and is transparent.  As we age, the gel inside of our eyes start to liquefy, like leaving Jello out in the sun.  This results in floaters in our eyes that are usually easy to see on a white or blue background.  The floaters cast a shadow onto your eye which may cause them to appear dark.  Noticing a few floaters is of no concern, it is when you see many floaters that you should be evaluated immediately, especially if they are accompanied by flashes of light.


The sudden on set of these symptoms could signify that the gel is separating from the retina as it liquifies called posterior vitreous degeneration.  This is usually a benign condition.  However, it can also indicate that the vitreous is tugging on the retina and cause it to tear.  Fluid can accumulate beneath a retinal hole or tear and cause a retinal detachment.  This is a medical emergency and you should be seen immediately by an eye care professional.  It this occurs during after hours, a prompt visit to the emergency room is necessary.  


Vitreous Floaters


Studies show that people with sudden onset of eye floaters and/or flashes of light, 39.7 percent had posterior vitreous degeneration and 8.9 percent had a torn retina.  Another study showed that 50 percent of people with a torn retina will develop a retinal detachment which can lead to significant vision loss.




Most floaters do not cause harm to your vision and eventually settle down due to gravity or your brain learns to ignore them.  Other times, they can persist and be annoying if they are large or in your field of view.  Procedures like vitrectomy which involves removing the entire vitreous from the eye and new procedures like  vitreolysis which uses a laser to “zap” or vaporize the floater into tiny pieces can be surgical options for large floaters.  

Contact our office immediately if you are experiencing signs and symptoms of recent onset of flashes of light and floating spots.  


glaucoma 2

 By Michael Duong, OD, FAAO

Glaucoma is a group of eye diseases that damage the eyes optic nerve and can result in loss of peripheral (side) vision and blindness. However, with early detection and treatment, you can protect your eyes against severe vision loss. Glaucoma is the second leading causing of blindness in the United States, affecting 3 million people.  


What is Open-Angle Glaucoma and how does the optic nerve get damaged?

Studies show that high pressure in the eye can cause damage to the optic nerve.  The front of the eye is called the anterior chamber. The anterior chamber is where the fluid that nourishes the eye flows into and out of the eye.  The fluid is produced behind the iris and flows between the iris and lens to exit through an opening/drainage called the trabecular meshwork.  In open-angle glaucoma, this drainage is “open”, but the fluid passes slowly through the openings in the meshwork causing build up and the pressure to increase.  This increase in pressure can cause damage to the optic nerve leading to vision loss.

People at higher risk of developing glaucoma:

·      African Americans over age 40

·      Everyone over age 60

·      People with family history of glaucoma


Can I develop glaucoma if I have increased eye pressure?

Not necessarily.  Not every person with increased eye pressure will develop glaucoma.  The thickness of your eye can be protective of glaucoma and certain people can tolerate higher pressures than others.  It is important to have a comprehensive visual evaluation including checking the pressure of the eyes and evaluating your optic nerves.


Can I develop glaucoma if I have normal eye pressure?

Yes.  Glaucoma can develop without an increase pressure to the eye.  This type of glaucoma is called low-tension or normal-tension glaucoma.


Glaucoma Symptoms

Glaucoma is a progressive, non-painful loss of peripheral (side) vision.  Good vision is maintained centrally.  As the disease progresses, people will have a difficult time seeing things out of the corner of their eyes and experience tunnel vision at later stages of the disease.  Eventually, central vision may be reduced until no vision is left.

 Don’t wait to schedule your eye examination. Call our office today to have your eyes evaluated for glaucoma.  

 children eye exam

            You wouldn’t take your child to the dentist only when they complain of a toothache would you? Absolutely not. No, you faithfully take your child every six months as directed so you can be ahead of any problems. So, why would you only take your child to the Optometrist if he or she is complaining of vision problems?

            Many young children do not know how to articulate their vision symptoms until they are older and by that time their condition may become more difficult to treat. As with everything, vision disorders are more easily treated the earlier they are caught. A good example of this is Myopia (nearsightedness.) The earlier myopia is caught, the better. We have many treatments at our disposal to control myopia and to keep it from progressing, especially when caught early on. Our Myopia Control Clinic utilizes Atropine drops, multifocal contact lenses, Ortho-Keratology lenses (also known as CRT) just to name a few treatments, to control myopia from progressing.

            Beyond common vision disorders, annual eye exams can detect problems your child may not be aware of; such as color vision deficiency, retinoblastoma (a type of rare cancer found in the back of the eye, the retina), Keratoconus (a condition where your cornea becomes thinner and bulges like a cone) and many more.

            The most common thing we hear in our practice from parents is, “my child doesn’t need an eye exam, his/ her eyes are healthy.” While that is often the case, the child does have healthy eyes, that doesn’t always mean they don’t have a vision disorder and unfortunately, sometimes the child’s eyes may not be healthy. You cannot tell simply by looking at someone if their eyes are healthy. Also, a pediatrician’s screening or school screening cannot take the place of an annual comprehensive eye exam.

Make sure to make an appointment for your child now to prepare them for the second half of the school year.  925-743-1222.

ipad pro 9 7

Computers, tablets, cell phones, gaming systems are a way of life.  However, digital eye strain can cause headaches, dry eyes, redness, and blurred vision.  Neck, back, and shoulder pain due to poor posture and less than optimal screen position can be an issue as well. Roughly 28 percent of people spend 10 or more hours a day on digital devices, 65 percent spend 3-9 hours a day. Here are steps to combat digital eye strain:


Schedule and eye exam to correct any prescription that may be uncorrected which can cause eye strain and fatigue.  If you need to wear glasses or contacts, wear them!


Wear computer-specific lenses  with antireflective coating while working on the computer.


Practice good posture and workspace layout.

digital eyestrain info 700x1765


Blink! Digital device use cuts down blink frequency by 50 percent which leads to dry eyes.  Take frequent breaks from digital devices.  Use the 20/2/20 rule.  Every 20 minutes, look at something 20 or more feet away for at least 20 seconds.  


Don’t forget about HEV (blue) light from digital devices.  HEV light has beneficial qualities, but can also contribute to cataracts and age-related macular degeneration if left unchecked.  Blue light filter coatings and tinted lenses are available to cut down on the amount of HEV light entering your eyes.  


Dim the background of your digital device, consider switching from white to a cool-gray background, and purchase glare-reduction filters.  


Cut back on your screen time.  Your eyes will thank you.  If you notice and changes to your vision or eye health, contact our office for a complete evaluation.  925-743-1222

Our Location & Hours

Optometrist, San Ramon, Optometric Center & Eyewear Galleria

2551 San Ramon Valley Blvd.
Suite #101
San Ramon, CA 94583 View Map

Mon, Tue, Wed, Thur: 9:00am - 6:00pm
Friday 10:00am - 5:00pm