TY - JOUR
T1 - Changes in posterior corneal elevation after laser in situ keratomileusis enhancement
AU - Vicente, Diego
AU - Clinch, Thomas E.
AU - Kang, Paul C.
PY - 2008/5
Y1 - 2008/5
N2 - Purpose: To evaluate changes in posterior corneal elevation using the Pentacam topographer (Oculus) in patients having laser in situ keratomileusis (LASIK) enhancement. Setting: Private practice, Chevy Chase, Maryland, USA. Methods: The Pentacam device was used to evaluate the changes in posterior corneal elevation above the best-fit sphere before LASIK enhancement and after LASIK enhancement in 24 eyes. The change in posterior corneal elevation in eyes for which pre-primary LASIK data were available was also evaluated. Results: After LASIK enhancement, the mean change in posterior corneal elevation was 5 μm. The mean posterior corneal elevation was 12 ± 7 μm before LASIK enhancement and 16 ± 6 μm after enhancement; the difference was statistically significant (P = .004). In eyes for which pre-primary LASIK data were available, the mean change in posterior corneal elevation after primary LASIK was 2 μm. The mean posterior corneal elevation was 11 ± 5 μm before LASIK enhancement and 11 ± 7 μm after enhancement. Conclusions: There was a statistically significant difference in posterior corneal elevation between before LASIK enhancement and after LASIK enhancement. However, the change in posterior corneal elevation was much smaller than previously reported values and below the sensitivity of the Pentacam topographer.
AB - Purpose: To evaluate changes in posterior corneal elevation using the Pentacam topographer (Oculus) in patients having laser in situ keratomileusis (LASIK) enhancement. Setting: Private practice, Chevy Chase, Maryland, USA. Methods: The Pentacam device was used to evaluate the changes in posterior corneal elevation above the best-fit sphere before LASIK enhancement and after LASIK enhancement in 24 eyes. The change in posterior corneal elevation in eyes for which pre-primary LASIK data were available was also evaluated. Results: After LASIK enhancement, the mean change in posterior corneal elevation was 5 μm. The mean posterior corneal elevation was 12 ± 7 μm before LASIK enhancement and 16 ± 6 μm after enhancement; the difference was statistically significant (P = .004). In eyes for which pre-primary LASIK data were available, the mean change in posterior corneal elevation after primary LASIK was 2 μm. The mean posterior corneal elevation was 11 ± 5 μm before LASIK enhancement and 11 ± 7 μm after enhancement. Conclusions: There was a statistically significant difference in posterior corneal elevation between before LASIK enhancement and after LASIK enhancement. However, the change in posterior corneal elevation was much smaller than previously reported values and below the sensitivity of the Pentacam topographer.
UR - http://www.scopus.com/inward/record.url?scp=42949161527&partnerID=8YFLogxK
U2 - 10.1016/j.jcrs.2007.12.040
DO - 10.1016/j.jcrs.2007.12.040
M3 - Article
C2 - 18471633
AN - SCOPUS:42949161527
SN - 0886-3350
VL - 34
SP - 785
EP - 788
JO - Journal of Cataract and Refractive Surgery
JF - Journal of Cataract and Refractive Surgery
IS - 5
ER -