Optic nerve head microvascular changes after phacoemulsification surgery
Abstract
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.
Evaluation of intraocular pressure changes following uneventful phacoemulsification surgeries as well as optic nerve head microvascular alterations revealed by OCT-A.
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.
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…
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