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


Scleral Lenses 1

By Michael Duong, OD, FAAO

Scleral contact lenses are larger lenses that offer crisp vision of a gas permeable or “hard” lens with a comfort of a soft lens.   

Why are they comfortable?

All scleral lenses are made of gas permeable (GP) lens material which allows for each lens to be customized individually to match visual needs of each patient.  GP lenses allow 2-4 times more oxygen to the eyes than soft contact lenses for a healthier wearing experience. They are more durable and lenses can last up to 1-2 years.  

Scleral contact lenses are made of gas permeable material and are rigid or hard in nature.  One may think that rigid lenses would be uncomfortable. However, scleral contact lenses are much larger than traditional contact lenses and they sit on the white portion (sclera) of the eye.  Since the lenses are much larger than regular contact lenses, they do not move as much. Scleral lenses remain tucked underneath the eyelids making them very comfortable to wear.

scleral crossscleral contact 2


Why are Scleral Lenses better than other contact lenses?

The most common reason for dropping out of contact lenses is due to discomfort.  Scleral lenses provide extra moisture to the eyes and work well with people with dry eyes.  The lenses have a space that acts as a fluid reservoir which provides moisture and increasing comfort.  Many patients also drop out of contact lenses due to poor vision from astigmatism. Astigmatism means the front surface of the eye (cornea) is shaped like football rather than perfectly round.  Astigmatism is usually present at birth and due to the irregular shape, light is not focused to the back of the eye properly resulting in blurred vision.

Most contact lenses are pre-made and cannot be customized to a person’s scleral shape.  Scleral lenses are ideal for astigmatism because they create a smooth surface over the irregular cornea allowing light to be properly  focus on the back of the eye. In addition, scleral lenses are also available for multifocal and bifocal wearers. Multifocal scleral lenses provide superior optics to help with far, computer, and reading vision for those people who have failed with soft bifocal or multifocal contact lenses.

How can Scleral Lenses help me?

If you have any of the following  irregular corneal conditions, scleral lenses can help improve your vision and quality of life.  

  • Keratoconus  
  • Corneal transplant
  • Dry Eye
  • Post-LASIK, RK, or PRK
  • Trauma-damaged corneas (i.e. corneal scar due to old infection)


Please contact our office today to schedule a scleral lens consultation.  925-743-1222

presbyopia woman 1200x630

By Michael Duong OD, FAAO

Are you over 40 and notice that you are pulling things further away from your eyes when you read? Are you wearing over-the-counter reading glasses to help you see your phone better?  These are symptoms of a condition called presbyopia (pres-bee-opia). The natural lens behind the colored part of the eye (iris) is controlled by tiny eye muscles called ciliary muscles.  Over time, the lens becomes less flexible causing objects at near like a cell phone or dinner menu to become blurred. Don’t be alarmed! This is a natural process of “maturing” that everyone goes through this in their 40s.  


What can be done to help your eyes feel young again?

 If you are already wearing glasses and are tired of taking your glasses on and off to read or see up close, consider progressive eyeglass lenses.  Progressive eyeglass lenses allow for clear vision when see things far away, intermediate, and up close by relaxing your eyes from straining. This is not the same as a bi-focal that your parents or grandparents wore with a distracting line.  Bi-focals have only two zones: far and up close. Progressive lenses have no lines, allowing for better functional vision and looks like a normal eyeglass lens, so they don’t age you! Computer glasses are a type of progressive lens tailored for computer users, especially for those who work on two or more monitors. These lenses have a larger computer and reading area compared to traditional progressive lenses to prevent neck pain from constantly trying to find the "sweet spot".

                          General Progressive Lenses


Computer glasses graphic2


How about if you wear contact lenses but notice you cannot see up close? Not to worry, with new contact lens technology, multifocal contact lenses allow for clear vision at a far,  at the computer, and up close. This will reduce your dependency on reading glasses about 80% of that time so that you do not have to constantly pull out your readers. Multifocal contact lenses work by providing multiple images on the eye at the same time.  There is an adaptation period and your brain learns how to decipher which correction to focus on, depending upon whether focusing at far or at near. There are many types of progressive eyeglass lenses and multifocal contact lenses for every prescription.

multifocal cl designs kodak lens vision centres

                        Multifocal Contact Lenses

If progressive eyeglass lenses or multifocal contact lenses sound like a good fit for your lifestyle, schedule a consultation at our office!  

Enchroma purple

by Michael Duong, OD, FAAO

Color blindness is a condition where a person’s eyes cannot see color accurately and have difficulty telling colors apart.  It is estimated that 300 million people are colorblind worldwide.  One in 12 men are colorblind and one in 200 women are colorblind.  The genes that influence color vision are carried on the X chromosome and if these genes are abnormal or damaged, color blindness occurs. 

What causes color blindness?

The retina in the back of the eye contains three types of cone cells that correspond to three types of photoreceptors – red, green, and blue.  Red-Green color blindness is caused by the overlap of red and green photoreceptors in the eye. 

How does color blindness affect the color blind?

Imagine going shopping for clothes without the ability to tell the difference between colors or when shopping for produce at the grocery store.  What if you wanted to cook a steak and couldn’t tell if the steak was done because you couldn’t see pink or red? These are some of the situations that people who are colorblind face everyday.  Not to mention work limitations, safety when driving and learning color-coded information in school.

What can be done?

EnChroma eyeglass lenses use special-filtering technology to help red-green color blind people see more of the full spectrum of color without compromising color accuracy or balance.  The lenses can be customized to your prescription for ultimate clarity. For some people the brain adjusts quickly and the effect is instant when first wearing the eyeglass lenses.  For others, it may take 10-15 minutes or more for the brain to adapt. 

If you are colorblind come to our office today to test drive Encrhoma glasses.

Check out the video below of a 66 year old man seeing color more accurately for the first time!


Save Your Vision Month


by Michael Duong, OD, FAAO

It is easy to take vision for granted because all we have to do is open our eyes to see the world around us!  Most of us don’t think about eye care until we notice that something is wrong. Would you wait until your tooth hurt to go to the dentist or go every 6 months for preventative care? Just like visiting the dentist regularly, its is important to get annual eye exams. One of the main benefits of getting your eyes checked regularly is to measure the power of your eyes to correct any prescription that is measured so you can see clearly and comfortably.  This is much better than waiting for your eyes to strain which can cause headaches, blurred vision, and tired eyes.


Eye exams can tell you a lot about your general health.  For example, conditions like high blood pressure, high cholesterol and diabetes can often be detected during an eye exam.  Blood vessels in your eye become damaged and leaky which can lead to permanent vision loss. If these disorders are detected in your eye exam, your optometrist can communicate with your primary care physician so that you can be treated in a timely manner.


Today, we are surrounded by digital screens in the form of laptops, cell phones, tablets, and computers.  One of the biggest problems I see at our office is eye strain from digital screens. Many of our patients work on the computer for long hours and complain of dry eyes, blurred vision, and eye pain.  When using computers it is best to take breaks. Every 20 minutes look at something 20 feet away for 20 seconds. This is called the 20-20-20 rule. Look at something at a distance so that your eyes can rest, preferably outside.


When we look at screens, we do not blink as much and that can dry out our eyes.  Studies show that our blink rate actually decreases about 50% while looking on a digital screen.  It is important to take breaks and remember to blink to prevent dryness. Artificial tears can be used to lubricate your eyes while on digital devices.  Blue light or high-energy visible (HEV) light emitted from digital devices can cause headaches, migraines, fatigue and insomnia. Ask your doctor about special lenses that filter out harmful blue light.  We only get one set of eyes, so it is important to take a preventative approach to eye care by making sure you get your eye exam at least once a year.

 lasik eye surgery blue


By Michael Duong, OD FAAO

A study published Feb 19th, in Nature and Biomedical Engineering, researches reported that they used retinal images from 284,335 people to determine signs of cardiovascular disease. Using Google algorithms, they then created models to predict 70 percent of the time which patients were likely to have a heart attack in 5 years.  “The clinical utility of such features still requires further study”, researchers said.


Diabetic retinopathy is the leading cause of blindness in the United States caused by diabetes.  The blood sugar causes blood vessels in the back of the eye (retina) to breakdown. This results in leaky blood vessels that can cause vision loss overtime.  By teaching software to distinguish stages of diabetic retinopathy, artificial intelligence had sensitivities of 87 percent to 95 percent.



Currently, retinal imaging is offered at our office during a comprehensive eye exam.  Cardiovascular diseases such as diabetes, high blood pressure, and high cholesterol are often picked up during these retinal exams.   With the help of aritifical intelligence eye doctors may be able to catch ife threatening conditions earlier than with current screening methods. This is an exciting time in eye care and we look forward to integrating artificial intelligence algorithms to our retinal imaging as they become available.   This technology can provide better communication and coordination of care between primary care physicians, eye doctors, and patients leading to better health care.


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