Abstract
Background
To evaluate the repeatability and consistency of multispectral refraction topography (MRT) in measuring retinal refraction before and after cycloplegia in children.
Methods
Children aged 7 to 18 years old were recruited in this prospective research. The central and peripheral retinal refraction were measured three times using multispectral refraction topography (MRT) before and after cycloplegia. The retinal deviation value (RDV) was used to describe retinal refraction. In addition, objective refraction (OR) and subjective refraction (SR) measurements were also performed.
Results
A total of 60 children with mean age of 10.50 ± 1.81 years were enrolled. Before cycloplegia, all the central and peripheral retinal refraction parameters showed good repeatability (lowest intraclass correlation coefficient (ICC) = 0.78 in RDV 45–53). After cycloplegia, the repeatability of MRT was significantly enhanced (lowest ICC = 0.91 in RDV-I). The 95% limits of agreement (LoA) of the central refraction and OR ranged from − 2.1 to 1.8 D before cycloplegia, and from − 1.69 to 0.27 D after cycloplegia. The 95% LoA of the central refraction and SR ranged from − 1.57 to 0.36 D after cycloplegia. All the 95% LoA showed high consistency.
Conclusions
MRT shows high consistency with autorefractometry, experienced optometrist in measuring central refraction. In addition, MRT provides good repeatable measurements of retinal peripheral refraction before and after cycloplegia in schoolchildren .