Transscleral filtration revealing a chorioretinal coloboma

Abstract

Purpose We report the case of a 19-year-old patient who presented with an ocular hypotony due to a transscleral filtration through an isolated congenital chorioretinal coloboma in his right eye. Observations The initial examination showed a decimal best corrected visual acuity (BCVA) decreased to 0.7 and a marked hypotony. A localized infero-nasal chemosis and a conjunctival hyperemia were observed. The fundus examination showed chorioretinal folds and an edematous disc. In the infero-nasal retinal periphery, a chorioretinal coloboma was seen with a full-thickness scleral defect. Ultrasound biomicroscopy showed the area of the coloboma through which the percolation of fluid occurred. Conclusions and importance A favorable outcome was observed within 6 weeks and BCVA improved to 1.0 three months later. The intraocular pressure (IOP) increased to 11 mmHg, but the bleb-like filtration could still be seen together with some persistent chorioretinal folds. Ultrasound Biomicroscopy (UBM) imaging was helpful to understand the mechanism of this uncommon complication of a coloboma.

Random Forest Algorithm-Based Ultrasonic Image in the Diagnosis of Patients with Dry Eye Syndrome and Its Relationship with Tear Osmotic Pressure

“…The larger the value of the decision tree, the better the classification effect of the sample. The method of weighted voting is shown in equations ( 5)- (7).…”

“…Some data and information will be obtained after image processing. These data and information are the basis for doctors to diagnose diseases [7]. Nowadays, the commonly used ophthalmic ultrasound image processing in hospitals mainly has the problems of poor accuracy of detection results, insufficient function of equipment system, and too mechanized operation.…”