The US contact lens market is more or less controlled by four players. Johnson & Johnson controls about a third of the market, Alcon and Cooper control roughly 25% each, and Bausch & Lomb controls 10% ...

Learn more about whether Alcon Inc. or Penumbra, Inc. is a better investment based on AAII's A+ Investor grades, which compare both companies' key financial metrics.

A cataract is when the natural lens inside the eye turns cloudy, leading to decreased vision. In the old days, cataract surgery was considered only when the cataract was ripe or fully mature.

These aren't grand gestures, just small, high IQ behaviors that attract other people, whether you realize it does or not. It's captivating to see someone love something with a deep passion.

Cataract surgery is the most common refractive surgical procedure performed on aging individuals. Major advancements in surgical and lens technology have led to enormous increases in surgical ...

[7,9,10] By using manufacturer-specific toric IOL calculators (Table 2), a surgeon can readily determine the appropriate lens power and orientation for neutralization of corneal astigmatism.