Dr. Steven O Hansen M.D.

Color blindness is not a real blindness but a deficiency in seeing colors. People having color blindness can’t distinguish between certain colors, like red and green, or blue and yellow. The red and green color deficiency is the most common type of this condition.What causes color blindness?It is...

Eye infections occur when various harmful microorganisms invade the eyes. They can be caused by bacteria, viruses, or fungi. When suspecting an eye infection, you should go and get a detailed eye examination from an eye doctor. Trying to self-diagnose and even self-treat eye problems and eye...

When the eye lens changes with age, cataracts develop and your vision becomes blurry. A clear structure, the lens is located at the back of the pupil. Light streams in via the cornea and the lens directs it to the retina when it enters the eye.When you start to age, cataracts can begin developing,...

Keratoconus is a non-inflammatory disorder of the eye where the cornea bulges outward like a cone. Thinning and bulging of cornea may result in blurring of vision and make the eye more sensitive to light. This disorder is seen in both the eyes and is common in people from 10-years-old to...

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...

Lasik (laser-assisted in situ keratomileusis), commonly referred to as laser eye surgery or laser vision correction, is a revolutionary new technology that corrects distortion in vision using focused laser beams to remove corneal tissue. The reconstruction of the surface of the cornea enables it...