Biomechanical properties of the cornea following intravitreal ranibizumab injection.

OBJECTIVE: To evaluate intraocular pressure (IOP) and corneal biomechanical properties changes after intravitreal ranibizumab injection (IVRI).

METHODS: One hundred twenty eyes of 120 patients who underwent IVRI between January and March 2018 in Adnan Menderes University Ophthalmology Clinic were included in study. Corneal hysteresis (CH), corneal resistance factor (CRF), Goldmann-correlated intraocular pressure (IOPg), and corneal-compensated intraocular pressure (IOPcc) were measured by Ocular Response Analyzer (ORA) by the same specialist preoperatively (preop), postoperative 1st (postop-1st), postoperative 3rd (postop-3rd), and postoperative 24th hours (postop-24th) after single-dose IVRI.

RESULTS: Among the 120 wet age-related macular degeneration subjects, 58 (48.3%) were female and 62 (51.7%) were male. The mean age was 64.8 ± 10.4 years. Postop-1st hour IOP cc and IOPg measurements were statistically different from all other measurements (p < 0.001). Postop-1st hour CH measurements were statistically different from preop and postop-3rd (p = 0.022 and p = 0.008, respectively).

CONCLUSION: After intravitreal injection, IOP pressures significantly increased. But, CH and CRF values were significantly decreased. All these changes were temporary.