The Effect of Upper Eyelid Blepharoplasty on Corneal Biomechanical Parameters Measured by Corvis ST.

[PURPOSE] To determine the effect of upper eyelid blepharoplasty (UEB) surgery on corneal biomechanical parameters 4 months after the procedure.

[METHODS] In this prospective longitudinal study, numerous corneal biomechanical parameters were evaluated before and 4 months after UEB surgery. All parameters were measured by the Corneal Visualization Scheimpflug Technology (Corvis ST, CVS, Oculus Optikgeräte GmbH, Germany) device.

[RESULTS] The study included 35 eyelids of the right eyes of 35 patients with dermatochalasis who underwent UEB, with a mean age of 56.9 ± 8.9 (range, 40-75) years. With a Bonferroni corrected significance level of < 0.001 to account for multiple comparisons, significant increases were observed in the first applanation (A1) and second applanation (A2) times and the highest concavity (HC) time following the UEB surgery. Intraocular pressure (IOP) and biomechanical-compensated IOP (bIOP) also showed a significant increase. Other corneal biomechanical parameters did not show significant differences following the UEB procedure ( > 0.001).

[CONCLUSIONS] UEB surgery resulted in significant changes in A1 and A2 applanation times, HC time, IOP, and bIOP. These findings suggest that altered eyelid pressure after UEB surgery can impact specific corneal biomechanical properties. It is advisable for practitioners to evaluate postoperative IOP measurement carefully in patients undergoing UEB surgery due to its potential impact on corneal biomechanical properties.