PURPOSE To asses the correlation between ocular components (axial length, anterior segment length, corneal power, vitreous length and equivalent power of the eye) and refractive error in eyes with higher and lower ametropia of subjects with anisometropia. METHODS An analytical survey was carried out in 68 patients with anisometropia of two or more diopters, assisted at the Ophthalmological Cl...

INTRODUCTION This study aims to evaluate the factors affecting the accuracy of biometry assessment using the SRK II formula in predicting the refractive outcome after uneventful cataract surgery by phacoemulsification for eyes within the normal range of axial lengths. METHODS A retrospective review of 100 consecutive cases of uncomplicated phacoemulsification surgery performed by two surgeons...

BACKGROUND To evaluate the influence of axial length on measurements of the retinal nerve fibre layer (RNFL) thickness and optic nerve head (ONH) parameters in healthy subjects. METHODS Using Cirrus HD-OCT, RNFL thickness and ONH parameters (disc and rim area) were measured in 15 short (<22.5 mm), 15 medium (22.51-25.5 mm) and 15 long (>25.51 mm) eyes. RESULTS The mean axial length was 21.5...

Purpose The purpose of this study was to clarify correlations between corneal deformation parameters measured with a dynamic Scheimpflug analyzer and baseline factors such as axial length, intraocular pressure (IOP), age, central corneal thickness (CCT), and corneal curvature. Methods Ninety-six eyes of 96 healthy subjects (mean 55.2 ± 16.1 years of age) were examined using a dynamic Scheimpf...

BACKGROUND The aim was to profile transient accommodative axial length changes from early adulthood to advanced presbyopia and to determine whether any differences exist between the responses of myopic and emmetropic individuals. METHODS Ocular biometry was measured by the LenStar biometer (Haag-Streit, Switzerland) in response to zero, 3.00 and 4.50 D accommodative stimuli in 35 emmetropes a...

Purpose To investigate the characteristics of retinal electrophysiological activity in relation to early myopia development in children. Methods Fifty-six children aged 6 to 9 years with emmetropic refractive error (defined as ≥ -0.5 diopter [D] and ≤ +0.5 D) were recruited. Cycloplegic refraction, axial length, and global flash multifocal electroretinogram (MOFO mfERG) at 49% and 96% contras...

PURPOSE To investigate the contribution of the individual ocular components, i.e. anterior chamber depth, lens thickness and vitreous chamber depth, to total axial length in patients with esotropic amblyopia. METHODS The study population consisted of 74 children, aged between 5 and 8 years: thirty-seven patients with esotropic amblyopia and 37 healthy volunteers (control group). The participa...