The Lamina Cribrosa (LC) Changes in the Eyes After Laser-Assisted in Situ Keratomileusis (LASIK)

Samsung Medical Center40 enrolled

Overview

The burden of LASIK surgery on optic nerve head (ONH) has been controversial. Until now, the change of retinal nerve fiber layer (RNFL) thickness was used as the indicator of the study. In the present study, the investigators intended to investigate whether the changes of the deep and superficial structures around ONH exist or not using EDI OCT.

Study Type

OBSERVATIONAL

Enrollment

Conditions

The Lamina Cribrosa and Optic Nerve Head Changes

Interventions

Exposed to the high pressure during the surgeryDEVICE

Eligibility

Sex: ALL

Medical Language ↔ Plain English

Inclusion Criteria: * the myopic patients who were supposed to undergo LASIK surgery in the Samsung Medical Center Exclusion Criteria: * Optic nerve head abnormalities at preoperative examination * Previous ocular surgical history

Outcomes

Primary Outcomes

Change of lamina cribrosa (LC) depth

micro millimeter

Time frame: before the surgery, postoperative 1 day, 1 week, 1 month, and 3 months

Change of lamina cribrosa (LC) thickness

micro millimeter

Time frame: before the surgery, postoperative 1 day, 1 week, 1 month, and 3 months

Change of optic nerve head (ONH) width

micro millimeter

Time frame: before the surgery, postoperative 1 day, 1 week, 1 month, and 3 months

Secondary Outcomes

Change of optic nerve head minimum rim width

micro millimeter

Time frame: before the surgery, postoperative 1 day, 1 week, 1 month, and 3 months

Data from ClinicalTrials.gov

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