Relationship between ocular dominance and interocular biometric parameters using Swept-Source Optical Coherence Tomography (SS-OCT) Relación entre la dominancia ocular y los parámetros biométricos interoculares mediante tomografía de coherencia óptica de fuente barrida (SS-OCT)
Archivos de la Sociedad Espanola de Oftalmologia, vol.101, no.4, 2026 (Scopus)
- Publication Type: Article / Article
- Volume: 101 Issue: 4
- Publication Date: 2026
- Doi Number: 10.1016/j.oftal.2026.502520
- Journal Name: Archivos de la Sociedad Espanola de Oftalmologia
- Journal Indexes: Scopus, MEDLINE, DIALNET
- Keywords: Chord μ, Interocular symmetry, Ocular dominance, Optical biometry, Swept-source OCT
- Acibadem Mehmet Ali Aydinlar University Affiliated: Yes
Abstract
Purpose: To investigate whether ocular dominance is associated with measurable differences in interocular biometric parameters using swept-source optical coherence tomography (SS-OCT). Materials and methods: This cross-sectional observational study included 227 phakic adults who underwent SS-OCT biometry (IOLMaster 700, Carl Zeiss Meditec). Dominant and non-dominant eyes were identified using the hole-in-the-card test. Axial length (AL), anterior chamber depth (ACD), crystalline lens thickness (LT), keratometry in flat (K1) and steep (K2) meridians, white-to-white (WTW) distance, and Chang–Waring chord distance (CWC-D) and angle (CWC-A) were compared as paired data. Statistical analyses included paired-sample t-test or Wilcoxon signed-rank test for group comparisons, and Spearman correlation for associations between biometric variables. A p-value <.05 was considered significant. Results: Among 227 participants (mean age 48.7 ± 16.2 years), 68.2% demonstrated right-eye dominance. No statistically significant interocular differences were observed in AL, ACD, LT, K1, K2, WTW, or chord μ (all P>.05). Correlation analysis showed that chord μ was negatively correlated with AL, ACD, and WTW, and positively correlated with LT and spherical equivalent in both eyes. Conclusions: In subjects with low anisometropia (< 2 D) and comparable visual acuity between eyes, ocular dominance was not associated with biometric asymmetry measured by SS-OCT. These findings suggest that ocular dominance represents a primarily functional rather than anatomical preference.