Background The imaging technique known as optical coherence tomography angiography (OCTA), has been widely applied in the diagnosis of ocular conditions. OCT is able to detect the Doppler frequency shift of the backscattered light, which provides information about measuring blood flow. OCTA also offers the advantage of being noninvasive. Using a technique known as split-spectrum amplitude-decorrelation angiography (SSADA), it is possible to visualize the local microcirculation. Aim and objectives Evaluation of intraocular pressure changes following uneventful phacoemulsification surgeries as well as optic nerve head microvascular alterations revealed by OCT-A. Patients and methods This prospective interventional trial was carried out in the outpatient Department at Memorial Institute of Ophthalmologic Research Hospital, Egypt. The study was carried on 60 eyes of 44 patients with cataract who underwent phacoemulsification and OCTA imaging, the study was carried out on 81 eyes but 9 eyes were excluded due to postoperative corneal edema and 12 eyes could not be imaged due to motion artifacts and patients in cooperation. Result Our study included 29 (66.6%) female patient, while 15 (33.3%) male patient. The variance, however, was nonstatistically significant ( P -value: 0.25). The mean age was 59.4±10.1 Standard deviation. According to mean visual acuity (VA) (Snellen): there was significant improvement of VA following uneventful cataract surgery over 1–4 weeks follow-up ( P -value: <0.0001) and according to mean IOP there was a significant decline of IOP following uneventful cataract surgery over 1–4 weeks follow-up ( P -value: <0.0001). Conclusion Based on our finding we concluded that Weak correlations were noted among VA, effective phacoemulsification time (EPT), and OCTA optic disc parameters, denoting that uneventful cataract surgery has minimal influence on the optic disc vasculature. Results that are more accurate can be gained by following a greater number of individuals postoperatively for a longer period of time.
Mohamed et al. (Thu,) studied this question.