Robert Roshni, Babu Mahesh, Unnikannan Krishnendu
Department of Ophthalmology, KVG Medical College and Hospital, Karnataka, India.
Beyoglu Eye J. 2023 May 1;8(2):104-109. doi: 10.14744/bej.2023.46504. eCollection 2023.
The purpose was to study the association between ocular dominance, refractive status, and biometric parameters.
Ocular dominance was assessed on consenting participants with non-pathological eyes using "hole-in-the-card test." The participants were then examined for visual acuity, biometric measurements, and refraction. Data were analyzed using IBM SPSS software.
Among a total of 660 participants in our study, right eye dominance was found in 508 (76.97%) participants. We found that horizontal keratometry readings (K1) were greater in the dominant eye compared to the non-dominant eye, showing a statistically significant difference in emmetropes (p<0.001) and hyperopes (p<0.001). The axial length was found to be longer but not significantly greater in dominant eye among while it was significant among myopes (p<0.001) and hyperopes (p<0.001). In myopic anisometropes, the axial length was significantly longer and more myopic in the dominant eye (24.0±0.7 mm) than non-dominant eye (23.9±0.4 mm) while the non-dominant eye was more hyperopic in anisometropic hyperopes.
Right eye was dominant in majority of participants. The dominant eye was more myopic and had greater axial length in anisometropes. The dominant eye was more astigmatic than the non-dominant eye. Visual acuity was not affected by ocular dominance. The mean difference in biometric measurements was significantly greater in hyperopic eyes. The assessment of ocular dominance could improve patient satisfaction in refractive surgeries and monovision treatments. Treatment protocols could be fine-tuned based on ocular dominance. Normative data in various biometric measurements could take into consideration laterality in terms of dominance.
本研究旨在探讨眼优势、屈光状态和生物测量参数之间的关联。
采用“卡片孔测试”对同意参与的非病理性眼的受试者进行眼优势评估。然后对受试者进行视力、生物测量和验光检查。使用IBM SPSS软件进行数据分析。
在我们研究的660名受试者中，508名（76.97%）受试者右眼占优势。我们发现，与非优势眼相比，优势眼的角膜水平曲率读数（K1）更大，在正视眼（p<0.001）和远视眼中差异有统计学意义（p<0.001）。在近视眼中，优势眼的眼轴长度更长，但差异无统计学意义，而在近视（p<0.001）和远视（p<0.001）眼中差异有统计学意义。在近视性屈光参差患者中，优势眼的眼轴长度明显更长且近视程度更高（24.0±0.7mm），而非优势眼（23.9±0.4mm），在屈光参差性远视眼中非优势眼更远视。
大多数受试者右眼占优势。在屈光参差患者中，优势眼更近视且眼轴长度更长。优势眼比非优势眼散光更明显。视力不受眼优势的影响。远视眼中生物测量的平均差异明显更大。眼优势评估可提高屈光手术和单眼视治疗的患者满意度。治疗方案可根据眼优势进行微调。各种生物测量的规范数据可在优势方面考虑左右侧性。
