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, Wed, Thurs: 9:00am - 6:00pm
Tuesday 9:00am - 7:00pm
Friday 10:00am - 5:00pm



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

Eye Care Tips


by Michael Duong, OD, FAAO

It is holiday season again! Many of us will be heading to the mountains, traveling to see relatives  or taking a nice vacation to a warm place.  Here are some tips that you can take with you while traveling.


Bring a pair of back-up glasses - If you wear glasses, bring two pairs of glasses on every trip.  You never know when you may break or lose a pair of glasses.  If you wear contact lenses, bring extra pairs of contacts just in case you rip or tear a contact lens along with your back-up glasses.


Prepare for dry eyes - Traveling on a plane for few hours? The dry air in the cabin can cause dryness and irritation especially if you wear contact lenses.  If you plan on sleeping, it is best to take out your contact lenses and wear your glasses while on the plane.  Bring over-the-counter artificial tears to lubricate your eyes.  


Bring contact lens solution - Always bring two travel size contact lens solutions with you in case one spills.  Remember to place your contact lenses in the proper contact lens case and bring a back up case.  Never clean your contact lenses with tap water, as bacteria and other micro-organisms can cause serious eye infections.  


Bring sunglasses - Make sure you have a set of shades that block 99% UV.  Protecting your eyes from the sun does not only apply to the beach; UV rays reflected from the snow can cause your eyes to burn and cause damage.  Whether you are on the beach, going to the mountains, or taking a road trip to Disneyland; wearing a good pair of sunglasses is very important for protecting your eyes.  


Stock up on prescription drops - If you take prescription eye drops, bring extra unopened bottles on your trip especially when traveling overseas.  Medications that you are taking may not be available at your destination.  If you need eye drops for allergies, glaucoma, or dry eyes, be sure to bring them with you and bring extras.  


Bring a copy of your current prescription for contact lenses and/or glasses - If you lose your contact lenses or glasses you can use your prescription to get replacements in a timely manner.  You don’t want to ruin your trip because you can’t see!


Don’t ignore changes to your vision - Don’t ignore sudden blurred vision, eye pain, red eye, or double vision.  These conditions may not be painful but can be the result of serious eye and health problems.  Don’t wait. It is best to seek medical attention immediately from a local eye doctor to prevent vision loss.  We have a 24 hour emergency phone service for our patients that will allow direct access to our doctor for a phone consultation.  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, Wed, Thurs: 9:00am - 6:00pm
Tuesday 9:00am - 7:00pm
Friday 10:00am - 5:00pm