The Lamina Cribrosa and Optic Nerve Head Changes
Conditions
Brief summary
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.
Interventions
DEVICEExposed to the high pressure during the surgery
Sponsors
Samsung Medical Center
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change of lamina cribrosa (LC) depth | before the surgery, postoperative 1 day, 1 week, 1 month, and 3 months | micro millimeter |
| Change of lamina cribrosa (LC) thickness | before the surgery, postoperative 1 day, 1 week, 1 month, and 3 months | micro millimeter |
| Change of optic nerve head (ONH) width | before the surgery, postoperative 1 day, 1 week, 1 month, and 3 months | micro millimeter |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change of optic nerve head minimum rim width | before the surgery, postoperative 1 day, 1 week, 1 month, and 3 months | micro millimeter |
Outcome results
None listed