Subtle changes of the crystalline lens after cycloplegia: a retrospective study

Abstract Background The purpose of this study was to evaluate the shape crystalline lens in terms biometry and diopters before after cycloplegia using CASIA2 swept-source (SS) optical coherence tomography (OCT) system on anterior segment. Methods This a retrospective study. Children adolescents (26 males 29 females, aged 4–21 years) with simple ametropia were selected for optometry imaging at 2 separate visits cycloplegia. Diopter values derived from spherical power (S) obtained by optometry. Biometric parameters lens, including chamber depth (ACD), posterior curvature (ACL PCL), thickness (LTH), decentration (LD), tilt (LT), equivalent diameter (LED), measured system. differences these compared determined, their relationships analyzed. Results Fifty-five participants (106 eyes) initially enrolled. There significant difference ( P < 0.05) S t =-7.026, 0.001 ), ACD =-8.796, ACL =-13.263, ) LTH = 7.363, change PCL 1.557, 0.122), LD 0.876, 0.383), LT 0.440, 0.661) LED =-0.351, 0.726) not statistically > 0.05). correlation that r 0.466, =-0.592, 0.223, 0.021) but 0.19, 0.051), =-0.048, 0.0628) or =-0.022, 0.822). Furthermore, closely related morphology. However, children adolescents, we found morphology unrelated age. Conclusions Changes are mainly LTH, there is no PCL, LD, LT, LED. In adolescent population, ACL, LTH. age tendency lens. Further research required determine whether same conclusion applies different groups refractive states (myopia, hyperopia, emmetropia) .