Archive for June, 2009

Dry eye is something that can occur after Lasik eye surgery and every patient should be aware of it. Actually, studies indicate that tear production and blink reflexes are reduced in all patients that undergo Lasik, but it does not usually cause any symptoms. The cause of the dry eye is due to the disruption of the corneal nerves by the cutting of the Lasik flap and the excimer laser treatment of the cornea itself. The deeper the treatment goes, the more likely that dry eye symptoms will occur. Actually, recent studies have shown that contact lens wear also causes increase in dry eye over time. This contact lens effect is a slower, more chronic process. Because it happens so gradually, contact lens related dry eye takes longer to be noticed by a patient whereas a Lasik patient may be aware of it within days or weeks.
For those rare patients that experience dry eye symptoms, as the cornea heals over a three to six month period, the nerves regenerate and much of the dry eye problems will resolve. Nonetheless, there are a number of measures that can be taken to speed the process and make it a better overall experience for the patient. The sooner the dry eye resolves, the sooner you will be more comfortable and your vision will return to its crispest potential. I have even seen some second opinion patients that were 6 months to a year after Lasik that never had their dry eye problems aggressively treated and still had persistent discomfort and moderately diminished (although annoying) vision. It seems to me that many chain surgery centers and surgeons under treat dry eye because they perceive it as a minimal problem whereas the some patients may feel it is significant.
I use a number of strategies to minimize and treat dry eye in all of my Lasik patients: