Dr Chun Od (San Francisco, CA 94112-1543)

• What are the early signs of cataracts?

  Cataracts are usually very small at the beginning and gradually grow larger over time. Early signs of cataracts include blurry vision and night halos and glare. In people with refractive visual errors, cataracts always cause a rapid prescription change because the lens is deteriorating. Only when daily lives are disrupted, cataracts require external removal. In some cases, tiny small cataracts in infants or youngsters do not draw serious concern.

• Can I buy eye drops for infection over the counter?

  Of course you can. I believe there are some eye drops designed to lower high eye pressure. You can go to nearby pharmacy and have a look. Maybe the staff there can give you some suggestion.

• Is there any tips to prevent astigmatism?

  Eat healthy foods which contain much vision-beneficial substances, e.g. vitamin A, vitamin D, lutein and zeaxanthin etc. Fruits and vegetables are widely recommended. Moreover, many eye care practitioners suggest that doing eye exercises every day is helpful in preventing visual refractive errors. Some others even believe their effectiveness on vision improvement.

• Can alcohol abuse cause eye twitching?

  In general, eye twitches are caused by too much stress or a lack of sleep. Maybe the alcohol is just triggering it, and those are the root causes.

• What are the symptoms of eye occlusion?

  There are several types of eye occlusion depending on the different location: Branch retinal artery occlusion, Branch retinal vein occlusion, Central Retinal Artery Occlusion, Central Retinal Vein Occlusion. Different type may have different cause and symptom, such as BRAO is usually caused by a small clot. A BRAO can cause a sudden loss of peripheral vision, BRVO can cause a small clot in a retinal vein. CRAO can cause sudden, serious, but painless loss of vision in one eye and CRVO causes mild to severe sudden but painless loss of vision.

• What kind of sunglasses can block blue light?

  Noir Glasses provide effective blue blocker sunglasses. You can also choose Oakley, Maui Jim, Uvex and Revo. Wrap around sunglasses or clip-on sunglasses are also available to block blue light. When you go to choose sunglases, you can ask the optician recommend some for you.

• Which kind of contact lens can change the color of my eyes?

  There are three types of tinted contact lenses: visibility tinted contact lens, color enhancement contact lenses, and opaque contact lenses. If you want to make your eyes look different, you should choose the opaque contact lenses.

• How to get used to progressive glasses quickly?

  To help you get used to progressive glasses quickly, you should stop wearing your old glasses immediately and wear new progressive glasses as long as possible all day. Put on the glasses as close to your face as possible.

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