Most people are familiar with reading the lines of progressively smaller letters projected onto a screen in the eye doctor's office. The Snellen chart is by far the most likely to be employed in places using the Roman alphabet. It actually only uses a few...
When you look at an optical illusion, something is obviously out of whack. Why won't your eyes cooperate? What's happening? Are your eyes playing tricks on you? Many readers will remember the emergence of Magic Eye books in the early 1990's. Countless hours were spent staring...
The pupil of the eye is an aperture (hole) in the iris that limits a light-bearing image coming through on its way to being focused on the retina. It typically bounces back and forth between a slight constriction and slight dilation (called "hippus"). The iris (the...
There is no single "best intraocular lens," whether single vision, toric, or presbyopia-correcting. All IOLs vary in optical performance, with incremental improvements over time from advances in technology. What is the "best" IOL for a particular individual often depends on the particularities of that patient's ocular anatomy,...
No. But there are indeed many connections between the eye and our hair & fingernails. The cornea of the eye is made of something almost identical to the keratin that is the basic "stuff" of hair and fingernails. In fact, the "k" in LASIK stands for...
Almost no association at all. "Blind" is an emotionally loaded word that has no place in Ophthalmology (except perhaps to scare a patient who is non-compliant with medical treatment). The degree of focusing problem a person has, can and should never be called "legally blind"...
Presbyopia is the slow, but progressive loss of near vision due to the gradual hardening of the natural lens of the eye. This hardening irreversibly reduces the lens' ability to change shape (accommodation). It is surprising but we have all lost about 50% of our accommodation by...
No single person invented LASIK. Rather, it was the child of a marriage of two different, early myopia (nearsightedness) correcting procedures: 1) Keratomileusis and 2) PRK (PhotoRefractive Keratoplasty). Pioneered by Columbian ophthalmologist, José Barraquer, in Bogotà, Keratomilieusis reshaped the cornea mechanically. A micro-blade removed the front half of the cornea which was then...
The decision of whether LASIK is "worth it" depends on how unhappy you are with your current vision. You might imagine the out-of-pocket cost of LASIK would be directly related to how nearsighted you are: you would be getting more "value" for the money treating...
I imagine you mean can there be problems with one's vision or eyes from having LASIK that do not show up until years later. For the most part, if there was good patient selection and an initial good visual result, the answer is "No." Most...
