Prenatal ultrasound biometry must return a head circumference (HC) and refuse when the image cannot support one. Selective prediction trades coverage against error, but its finite-sample guarantees bound the rate of gross errors, not their magnitude. We audit a tool-grounded biometry pipeline on tw…

Biometric travel could transform airport check-ins, with digital passports and facial recognition paving the way for a more seamless travel experience.

Background: High myopia (spherical equivalent refractive error [SER] ≤–6.00 diopters) is a prominent global cause of visual impairment, but its structural alterations are inadequately documented at all severity levels in Indian tertiary hospitals. Objective: The aim of this #Study is to evaluate ocular biometric and fundus traits in high myopia and their relationship to the severity of myopia. The primary outcome is axial length measured using contact A-scan biometry. Meta-Analysis for Pathologic Myopia (META-PM) identified fundus changes, keratometry, central corneal thickness, and refractive astigmatism as secondary outcomes. Methods: This hospital-based cross-sectional observational #Study at Acharya Vinoba Bhave Rural Hospital, India, will enroll 160 participants aged 10 to 50 years with high myopia (SER ≤−6.00 diopters in ≥1 eye) consecutively over 2 years. Ophthalmic examination will include best-corrected visual acuity (converted to logarithm of the minimum angle of resolution [logMAR]), cycloplegic refraction, slit-lamp biomicroscopy, keratometry, pachymetry, A-scan biometry, and dilated fundus examination (META-PM). Statistical analysis will involve the Shapiro-Wilk test, Pearson/Spearman correlation, ANOVA/Kruskal-Wallis, chi-square, and generalized estimating equations using SPSS (version 23; IBM Corp). Results: The #Study received ethics approval on July 9, 2025. Enrollment has been ongoing since January 2026. Results are expected to be published in 2027 or 2028. Conclusions: This #Study will provide region-specific data and guide evidence-based high myopia management. Trial Registration: Clinical Trials Registry – India CTRI/2025/12/099253; https://ctri.nic.in/Clinicaltrials/pmaindet2.php?EncHid=MTQzMTg1&Enc=&userName=099253 International Registered Report Identifier (IRRID): DERR1-10.2196/96402

UCL Discovery is UCL's open access repository, showcasing and providing access to UCL research outputs from all UCL disciplines.

UCL Discovery is UCL's open access repository, showcasing and providing access to UCL research outputs from all UCL disciplines.

A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android. Changelog excerpt: - Add Windows Hello support for `canAuthenticate`, `getAvailability`, `getBiometryType`, `authenticate`and `cancelAuthentication` - Windows uses the system-selected Windows Hello verifier and reports `multiple`for the biometry type because Windows does not expose the enrolled sensor through this API

Scientific Data - A multimodal paired slit-lamp photography and anterior segment optical coherence tomography dataset for anterior chamber biometry and cross-modality modelling

Pupil dilation could skew IOL power calculations by increasing anterior chamber depth and reducing lens thickness, according to a study published in Journal of Refractive Surgery. “Because biometry and IOL power calculations are commonly performed on the same day once a decision for surgery has been made, biometry is usually performed while the patient’s pupils are still dilated,” David Z. Chen, MBBS, FRCOphth, of National University Hospital in Singapore, and colleagues wrote. “Currently, there is no consensus on how mydriatics influence biometric results and, if so, which parameters are

Pupil dilation could skew IOL power calculations by increasing anterior chamber depth and reducing lens thickness, according to a study published in Journal of Refractive Surgery. “Because biometry and IOL power calculations are commonly performed on the same day once a decision for surgery has been made, biometry is usually performed while the patient’s pupils are still dilated,” David Z. Chen, MBBS, FRCOphth, of National University Hospital in Singapore, and colleagues wrote. “Currently, there is no consensus on how mydriatics influence biometric results and, if so, which parameters are

The reliability of Lenstar LS-900 (OLCR) & Eyestar 900 (SS-OCT) compared with Pentacam (Scheimpflug), & assessing their implications for IOL power calculation.

Objective To evaluate the estimated lens diameter (eLD) of the crystalline lens in a large European cohort. Methods and analysis Data sets from an Austrian population acquired between 2020 and 2022 were analysed in this study. Measurements included optical biometry (IOLMaster 700, Carl Zeiss Meditec AG, Germany) as well as anterior segment optical coherence tomography (CASIA2, Tomey, Japan). For eLD prediction, three different machine learning approaches were implemented. Results In total, 2352 eyes of 2352 patients were included in this study. The eLD was normally distributed with a mean value of 10.18±0.56 mm, showing a statistically significant difference (p=0.008) between females and males (10.16±0.54 mm and 10.22±0.57 mm, respectively). There was a low but significant correlation (p