Written by Dr. David Evans Last modified on August 6, 2018
Considerable confusion persists among consumers as to what 20/20 vision really means. I wrote a post on this question last year. To further this confusion, 20/20 is really only one number, whereas vision is much more than one number. Acuity — using the black on white chart — measures how people see only under very […]
Written by Dr. David Evans Last modified on April 22, 2019
When it comes to discussing laser refractive surgery, I often hear questions about which procedure is best: LASIK, PRK, LASEK, EPI-LASIK, etc. The basic differentiator between these procedures is whether or not a corneal flap is created (the flap is a tiny layer of corneal tissue). During LASIK a blade — or today more commonly […]
Written by Dr. David Evans Last modified on August 6, 2018
Do you ever get the sense that there’s something in your eye, but when you try and focus on what it is, it simply drifts out of your field of vision? That’s what we call an eye floater. Eye floaters typically are nothing more than a benign nuisance that interfere intermittently with your field of […]
Written by Dr. David Evans Last modified on April 22, 2019
Price is always an issue when considering any kind of elective surgery and LASIK is no exception. Consumers spend about $30 Billion a year on eye care products, much of it spent recurrently on contact lenses, glasses and related solutions. A common concern I hear from contact lens wearers about LASIK surgery is the cost. […]
Written by Dr. David Evans Last modified on August 6, 2018
You’ve probably heard of color blindness before, but odds are you’re unfamiliar with the condition known as tetrachromacy. If color blindness is defined as a less-than-average spectrum of color vision, tetrachromacy represents the flipside of that coin: a greater-than-average spectrum of color vision. Photoreceptor cone cells in the eye are responsible for our color vision. […]
Written by Dr. David Evans Last modified on August 6, 2018
This is a question I’ve been hearing more and more recently. Travel medicine has become increasingly popular with many patients looking to combine a vacation with treatment from surgeons practicing outside the U.S. Others might be interested in treatment with a new technology not yet approved in the U.S. And then there are those who […]
Written by Dr. David Evans Last modified on May 9, 2019
I receive a lot of questions about the risks and side effects of LASIK from people considering the procedure. I have consulted on many FDA clinical trials related to LASIK and have lent my expertise to many other studies over the years. In terms of efficacy, the results speak for themselves. Yet my experience is […]
Written by Dr. David Evans Last modified on April 22, 2019
Many presbyopic-aged LASIK patients — who are nearsighted — don’t realize that after LASIK, they will need to start using reading glasses to see things up close. Read more »
Written by Dr. David Evans Last modified on April 23, 2019
I recently had dinner with South African surgeon Dr. Johaan Kruger who has been studying the benefits of simultaneous bilateral cataract surgery. Traditionally, cataract surgery has been performed as a sequential procedure… Read more »
Written by Dr. David Evans Last modified on August 6, 2018
Throughout my years of research in the eye care industry, youthfulness and good vision have always gone hand-in-hand. Retaining the good vision of our youths (without the aid of glasses) is a goal many of us share. Interestingly enough, not much thought has been given to the eyes’ appearance in terms of maintaining that youthful […]
