Ocular biometry in dense cataracts: Comparison of partial-coherence interferometry, swept-source optical coherence tomography and immersion ultrasound.

Purpose: To assess the axial length (AL) measurement failure rate using partial-coherence interferometry (PCI) and swept-source optical coherence tomography (SS-OCT) in dense cataracts. As a secondary outcome, the SS-OCT biometry was compared to immersion ultrasound.

Methods: This is a prospective cross-sectional and comparative study.

Intelligent-assistant system for scleral spur location.

A system based on the use of two artificial neural networks (ANNs) to determine the location of the scleral spur of the human eye in ocular images generated by an ultrasound biomicroscopy is presented in this paper. The two ANNs establish a relationship between the distance of four manually placed landmarks in an ocular image with the coordinates of the scleral spur. The latter coordinates are generated by the expert knowledge of a subject matter specialist.

A Proposed Method to Quantify Vitreous Hemorrhage by Ultrasound.

Purpose: To propose a method for quantification of vitreous hemorrhages (VH) termed minimum image gain (MIG). Therefore, to obtain MIG measurements in patients with VH and to compare them to normal controls; to compare results between graders; and to obtain and compare MIG from two different ultrasound systems.

Methods: Retrospective and cross-sectional, observational, and comparative study performed in two parts: Part 1) Retrospective comparison of MIG in VH vs controls by two experienced graders, with intra/inter-observer variability: MIG technique is described.

Ultrasound, histopathological, and genetic features of uveal melanoma in a Mexican-Mestizo population.

Objective: To describe the ultrasound, histopathological and genetic characteristics of uveal melanoma in a Mexican-Mestizo population.

Material And Methods: A total of 39 enucleated eyes with a histopathological diagnosis of uveal melanoma were assessed by describing the clinical findings, and ultrasound, histopathological and genetic features.

Results: A high correlation was observed between tumour height measurement using ultrasound and histopathology.

Choroidal melanoma in a 6-year-old female: ultrasonographic diagnosis.

A 6-year-old girl presented with right divergent strabismus that had been noticed by her parents 3 weeks before. On examination, she had visual acuity of counting fingers at 3 meters on her right eye and retinal non-regmatogenous bullous detachment with subretinal tumor. Echographic examination disclosed retinal detachment in temporal side from optic disk to equator, a medium reflectivity rounded, homogeneous lesion with rapid growing and positive signs of vascularity.