Real axial length (RAL): a novel choroid-inclusive metric for myopia management.

ABSTRACT: To introduce and validate the real axial length (RAL)-the distance from the corneal vertex to the posterior choroidal surface measured by swept-source OCT angiography (OCTA). RAL aims to reduce the influence of choroidal thickness on conventional axial length (AL) measurements. The study also compared OCTA-derived parameters with those from the IOL Master 700 to confirm measurement accuracy and established age-specific RAL references in children and adolescents without myopia. This cross-sectional study enrolled Chinese children with normal uncorrected vision. VG 200D and IOL Master700 were used to measure AL, central corneal thickness (CCT), anterior chamber depth (ACD), aqueous depth (AQD), and lens thickness (LT). VG 200D additionally provided new AL parameter - RAL. The intraclass corr

SUBMITTER: Ran G 

PROVIDER: S-EPMC12804723 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature