U.S. doctors online nowAsk doctors free

Dr. Robert Chang

Ophthalmology
Palo Alto, CA
male

Locations

Office

Palo Alto, CA

Address

2452 Watson Ct, Palo Alto, CA
Directions

About

Bio

Dr. Chang is a Board Certified Ophthalmologist who completed his ophthalmology residency training at Washington University of St. Louis, and glaucoma fellowship at the Bascom Palmer Eye Institute in Miami. Dr. Chang is an Assistant Professor of Ophthalmology at the Byers Eye Institute at Stanford in Palo Alto and focuses on cataract and glaucoma surgery. http://med.stanford.edu/profiles/researcher/Robert_Chang/

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Ophthalmology

Languages spoken

English

Doctor Q&A

824 Answers
147 Agrees
The number of answers this doctor has agreed with.
A 60-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Worrisome symptoms: Include decreased vision, double vision, increasing pain, not improving with rest, ice, compression, elevation, over the counter pain meds.
A 67-year-old male asked:
Dr. Robert Chang
Specializes in Ophthalmology
Eye drop: Do you mean zioptan (tafluprost), preservative free glaucoma medication.
A 59-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Either way: Drops or slt can be first line. Slt can wear off.
A 67-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Yes: Need to see result of cataract surgery. Sometimes refraction can change again after laser surgery.
A 24-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Not enough info: Any visual blurry if persists should be checked out.
A 48-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Best not to use: Anticoagulants, nsaids like ibuprofen, or Aspirin if bleeding.
A 47-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Infections: A stye is a clogged oil gland that is infected. The body typically walls it off as a red painful bump around the eyelid skin. Pink eye is a conjunct... Read More
A 59-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Relatively new: Yes newer, can visit website trabeculectomy is a gold standard procedure and usually indicated for more severe disease or when the pressure needs to ... Read More
A 59-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Can be: Glaucoma is only partly hereditary, plus there are many types. It's multifactorial with many genes, aging, and epigenetic involvement.
A 58-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
You can ask your eye: Doctor to find out what type it is.
A 60-year-old male asked:
Dr. Robert Chang
Specializes in Ophthalmology
No: As long as you have a baseline healthy cornea that can tolerate lasik, should not affect future cataract surgery. However lasik makes it more difficu... Read More
A 62-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Restasis for dry eye: Blepharitis and dry eye are very common and can be reviewed from info on the web. You can try artificial tears first if not already using. Restasis ... Read More
A 42-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
No: Eye color comes from amount of pigment in the iris, with lighter color meaning more missing pigment. Doesn't affect vision.
A 47-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Not common: Maybe if the eye pressure was temporarily high or if there was a lot of inflammation post laser.
A 44-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Mostly genetics: Some environmental influences that are still being worked out.
A 31-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Can be: Typically halos at night with on coming lights, but halos can also be affected by other things such as corneal edema, large pupil, etc.
A 40-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Exam: Checking a refraction, can be autorefractor, phoropter--manual or automated, trial frame/loose lenses, cycloplegic refraction, etc. Depends on age an... Read More
A 47-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Not yet: We manage and attempt to prevent vision loss with our therapies. We want you to outlive vision loss.
A 37-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
White cataracts: Very mature cataracts can cause the pupils to become white appearing.
A 49-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Yes: Visual field, optic nerve evaluation (photos, oct), pressure check. Typically need several checks to determine progression to confirm active glaucoma... Read More
A 36-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Figure out source: May just be prominent surface vessels. Maybe be irritation and reactive hyperemia (tired, dryness, environmental irritation, eyedrop preservatives, e... Read More
A member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Needs an exam: Usually an infection causes red eye with discharge.
A 39-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Yes: Depends on severity of disease. Early glaucoma can be asymptomatic, best to diagnose early and try to prevent it from worsening.
A 38-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Conservative vs: Excision and drainage. Have an eye care specialist look at it, determine how long it's been around, whether it's still inflammed, how large it is, us... Read More
A 30-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Yes: It's commonly used to treat glaucoma and one of the options among several.
A 42-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Yes: Medicare covers monofocal intraocular lenses.
A 38-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Healthy lifestyle: Everything in moderation, preventive baseline exam. Avoid extremes, control diet, environment, minimize toxins.
A 38-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Various causes: Eye infection, dry eye, dirty contact lens, deposits on lens, irritating lens solution, folded lens or a tear in it, etc. -- see if artificial tears h... Read More
A 28-year-old male asked:
Dr. Robert Chang
Specializes in Ophthalmology
Idiopathic: Recurrent scleritis can have various infectious, inflammatory, presumed autoimmune, other causes, etc. But a cause is not always found. Be sure to al... Read More
A 35-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
be screened: If high risk. Then listen to your doctor's recommendations.
A 43-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Subjective: Patient has a complaint of decreased vision affecting daily life (activities of daily living).
A 18-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
No: Get checked out by an ophthalmologist. If you do have recurrent iritis or other findings, then they may refer you to a uveitis specialist, or you may... Read More
A 30-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Damage of the nerve: Loss of ganglion cells is typically the primary cause since eventually the information is not sent back to the brain as the retinal nerve fiber layer ... Read More
A 25-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Get it checked: Could be recurrence of iritis which can lead to elevated eye pressure and some corneal edema that can cause haloes, or sometimes cataracts forming fr... Read More
A 32-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
No standard of care : Yet. Just over the counter products, anti oxidants.
A 49-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Frequent checks: Chronic disease if primary, can resolve if secondary. Best to follow with a glaucoma specialist to prevent vision loss. Key is not to be lost to fol... Read More
A 58-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Depends on the patie: How the patient heals, how many prior surgeries or difficult anatomy or co-existing issues, rate of scarring, compliance and persistence, disease resp... Read More
A 58-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
A couple times: But may have diminishing effect.
A 58-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Depends on patient: And physician. Slt can wear off, many patients are afraid of laser. Drops can always be stopped but laser can't be taken back.
A 58-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Best to take multipl: Field exams, and look at the severity of the defect and the rate of progression with treatment (plotted against the estimated number of years to live)... Read More
A 40-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Some or none: Depends on age, how much hyperopia, if accommodation can overcome it or presbyopia onset has occurred. Can get eye fatigue, also may have narrow angl... Read More
A 58-year-old female asked:
Dr. Robert Chang
Specializes in Ophthalmology
Yes: Everyone gets cataracts as they get older (glaucoma is a disease of older age as well), also glaucoma surgery accelerates cataract formation.
A 61-year-old male asked:
Dr. Robert Chang
Specializes in Ophthalmology
If routine surgery: Then may be ok if you feel healed. If concerned, ask your surgeon.
A 41-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Type?: Depends on the procedure and risk level for your eye (coexisting problems, etc), sort it out with eyecare specialist.
A 41-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
See specialist: You can always get a second opinion. Adhere to treatment regiment to prevent vision loss, maintain good compliance with visits, testing, and treatmen... Read More
A 44-year-old male asked:
Dr. Robert Chang
Specializes in Ophthalmology
Yes if it helps: More than 4 times a day, then use preservative free tears, thinner = less blurring but lasts shorter vs. Thicker = more blurring but lasts longer che... Read More
A 36-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Many: Primary causes vs. Secondary causes. Genetic predisposition. Anything that damages the eye so that the level of eye pressure is harmful to the optic... Read More
A 39-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Was it a hyphema: Usually temporary: depends on vision (blocked vision for a long time in a young child could necessitate washout), eye pressure (if high for a certain ... Read More
A 35-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Yes: Based on risk analysis high risk suspects can be treated as in the ocular hypertension treatment study.
A 40-year-old member asked:
Dr. Robert Chang
Specializes in Ophthalmology
Depends on severity: May need cool compresses, avoid irritants, antihistamines, steroids, etc.

90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.

Ask doctors free
Answer emailed
in 24 hours or less

Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

10
Recommendations
787
Thank you notes
Dec 2, 2012
I endorse this doctor. Dr. Chang is an excellent glaucoma specialist and I feel very comfortable referring my patients to him. I know that he will take very good care of them.
Great doc with a nationwide reputation, well respected by his peers.
Aug 24, 2013
Knowledgeable answers, caring and dedicated
HealthTap member
I did not have cataract. I only had lens replacement done brcause I was not able to have lasix because of extremely weak eyes. It has been almost 5 months simce the surgery. I see halos at night from ...Read More
HealthTap member
This was very helpful. Thanks! I can voluntarily shake my eyes rapidly enough to identify individual moving fan blades etc...was wondering if it's harmful.
HealthTap member
This was very helpful. Thanks! Thanks for your thorough answer doc! The problem may indeed be a contact lenses fit issue.

Awards

Most Influential, Third Place, San Mateo County, CA - Winter
2013
Top Ophthalmologist , First Place, San Mateo County, CA - Winter
2013
Top Doctor, Third Place, San Mateo County Region, CA - Summer
2013

Affiliations

Stanford University
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
Answer emailed
in 24 hours or less