Dr. John T. Heffernan M.D.

What are cataracts?When the lens located inside the human eye gets cloudy, it is called a cataract. A cataract in Latin means waterfall, thus describing what your vision with cataract is like; seeing through a waterfall. A cataract occurs as a result of the inability of the lens to allow sufficient...

Conjunctivitis is a very common and unpleasant condition, especially for people that use contact lenses. Children can be equally affected by this disease, as well as adults. People who have conjunctivitis, also known as pink eye, can transmit the disease to their family or friends or anyone else...

Approximately, a fifth of all people above the age of 60 have at least mild cataracts, and at the age of 75, that number increases significantly.A cataract presents itself as a reduction of clarity in the eye lens. A normal eye lens is comprised of clear water and variety of proteins. The lens...

Astigmatism is one of the most common eye disorders affecting huge swaths of the population where the skewed curvature of the corneal surface creates blurred images of near and distant objects. In the normal course, astigmatism goes hand in hand with varying degrees of nearsightedness (myopia) and...

Perhaps the most poorly recognized key health challenge today is trauma. In the developed world, trauma causes monocular blindness. Ocular injury otiology may vary from one urban area to another and therefore needs careful investigation. Any approach for preventing trauma requires familiarity with...

The exact cause of cataracts is not known. Nevertheless, it seems that most cataracts are caused by long-term variations in the eye lens protein components which in turn causes cloudiness in the lens. Though not common, cataracts can affect infants and young children due to genetic enzyme...