This article is more than 5 years old. Information may no longer be current.

Thin preop corneal thickness not linked to post-LASIK keratectasia

Add topic to email alerts

Receive an email when new articles are posted on

Please provide your email address to receive an email when new articles are posted on .

Subscribe

Added to email alerts

You've successfully added to your alerts. You will receive an email when new content is published.

Click Here to Manage Email Alerts

You've successfully added to your alerts. You will receive an email when new content is published.

Click Here to Manage Email Alerts

Back to Healio

We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com.

Back to Healio

LASIK patients with a preoperative central corneal thickness of 500 µm or less do not have an increased risk of postoperative keratectasia, according to a study by researchers in California and Florida.

Andrew I. Caster, MD, and colleagues reviewed outcomes for 109 eyes of 69 LASIK patients who had a preoperative central corneal thickness between 452 µm and 500 µm. The attempted correction ranged from +3.13 D to –7.75 D, and patients had no known keratectasia risk factors, according to the study.

The researchers observed no clinical signs of keratectasia in any eye at any postoperative follow-up point. They also found no correlation between preoperative pachymetry and refractive change between 1 month and 12 months follow-up.

Additionally, investigators observed no statistically significant change in either mean spherical equivalent or manifest cylinder between 1 month and 12 months, according to the study.

"Double-angle vector analysis determined the directional shift in postoperative refractive cylinder was not statistically significant from zero (P < .05)," the authors said.

The study is published in the October issue of Journal of Refractive Surgery.