High-resolution optical coherence tomography visualization of LASIK flap displacement

Abstract

Uneventful myopic laser in situ keratomileusis (LASIK) was performed in both eyes of a 33-year-old woman. Two weeks after LASIK, examination of the left eye revealed flap striae radiating inferonasally from the superior hinge. The flap was relifted and repositioned to remove the irregular astigmatism and reduce the striae. Before the flap was relifted, Fourier-domain optical coherence tomography (FD-OCT) showed the gap at the temporal flap, which had not been detected by biomicroscopy. After the flap was relifted, FD-OCT documented that the gap was closed. High-resolution FD-OCT was helpful in the visualization and management of flap displacement.

In Vivo Imaging of Corneal Inflammation: New Tools for Clinical Practice and Research

“…47 Further, AS-OCT has been used to measure the tear meniscus, 48 in anterior segment tumor imaging to differentiate cystic from solid lesions, 49 to assess the penetration of tumors, 50 and to monitor post-surgical patients. 51, 52 …”

Comparison of laser in situ keratomileusis flaps created by 3 femtosecond lasers and a microkeratome

“…28 Therefore, Fourier-domain OCT may be better than time-domain OCT for evaluating the finer details of LASIK flaps. 29 We used the RTVue Fourier-domain OCT system to analyze flap thickness and found that the M2 microkeratome group had the greatest difference in central and periphery thickness. The IntraLase group (femtosecond group 1) and the VisuMax group (femtosecond group 2) had similar center-periphery differences.…”

Clinical Applications of Anterior Segment Optical Coherence Tomography

“…High-resolution OCT is helpful in the visualization of flap thickness, flap interface (flap-stroma relationship), and flap displacement [ 24 ]. Reinstein et al [ 25 ] reported that the residual stromal thickness measured via OCT was thicker than that measured through very high-frequency ultrasound in many eyes with insufficient residual stromal thickness.…”