Dr. Sam S. Yang MD

Just like our body, our eyes also need a lot of care and timely attention. Maintaining the health of our eyes and improving the vision should never be neglected due to the changing lifestyle.What is a Normal Human Vision?Normal vision is defined as 20/20. The term 20/20 is also called as visual...

Blepharitis refers to the inflammation of the eyelid resulting in red and itchy eyes. This is a very common eye condition and can affect people of all age groups. It is not a very serious condition and will not affect one's vision in the future. Yet, blepharitis can be very uncomfortable and...

Lasik eye surgery is a surgical procedure which corrects deteriorating vision by reshaping the surface of the eye, more precisely the corneal layer in such a manner that light enters the eye at the angle appropriate for correct vision. Nearsightedness (myopia), farsightedness (hyperopia) and...

What is Chalazion?A chalazion is a benign and painless nodule which can occur in the upper or lower eyelid. It is common and is sometimes called a meibomian cyst or a tarsal cyst. The term chalazion (pronounced kah-la'-ze-on) originates from the Greek word which means a small lump. These nodules...

Cataracts is a cloudy area in the lens of the eye that blocks the light entering the eye, thus affecting vision. Surgery is one of the most common options to treat cataracts and improve vision. It is performed by an ophthalmologist and in most cases, is an outpatient procedure. Cataracts is an eye...

Rosacea is a chronic skin condition that mainly affects women past their 30s. According to the National Rosacea Society, approximately 16 million people in the US alone are affected with rosacea. It is a very common problem, especially among fair-skinned people. Rosacea causes redness over your...