Landolt C and grating acuity are compared with that normally expected of the eccentric fixation region for 10 strabismic amblyopes. The findings suggest that 2 populations of amblyopes exist. For some amblyopes visual function is that predicted of the eccentric region used for fixation, whereas for other amblyopes there is a further pathological reduction in visual function. These findings may ...

Best-corrected acuity was measured for vertical and horizontal gratings and for recognition acuity optotypes (Lea Symbols) in a group of three- to five-year-old children with a high prevalence of astigmatism. Results showed meridional amblyopia (MA) among children with simple/compound myopic or mixed astigmatism, due to reduced acuity for horizontal gratings. Children with simple/compound hyper...

The binocular interactions that occur during dichoptic and binocular viewing were investigated using a letter acuity task in normally sighted children (age range 6-14 years) and adults, and in adults with anisometropic amblyopia. Our aims were to investigate the nature of binocular interactions that occur in each group, and the extent to which the characteristics of binocular interactions diffe...

The ability to identify faces is of critical importance for normal social interactions. Previous evidence suggests that early visual deprivation may impair certain aspects of face recognition. The effects of strabismic amblyopia on face processing have not been investigated previously. In this study, a group of individuals with amblyopia were administered two tasks known to selectively measure ...

Amblyopia is a neurodevelopmental disorder of the visual system that is associated with disrupted binocular vision during early childhood. There is evidence that the effects of amblyopia extend beyond the primary visual cortex to regions of the dorsal and ventral extra-striate visual cortex involved in visual integration. Here, we review the current literature on global processing deficits in o...

Purpose: To investigate ocular asymmetry status 5 years after cranioplasty in children with unilateral coronal craniosynostosis.Methods: The medical records of 41 who underwent at a mean age 11.7 months were retrospectively reviewed. cranial vault index (CVAI) and the amount head tilt measured on images obtained before cranioplasty. Presence anisometropia, aniso-astigmatism, amblyopia, strabism...

Amblyopia is an exceedingly common visual deficit marked by poor visual acuity and subpar performance of one or both eyes due to misshapen refractive surfaces of the cornea or weak muscles around the eye. Success rates of current treatment options are inadequate, leaving millions of people with untreated or unimproved amblyopia. Much of this failure is due to a high rate of noncompliance to reg...

IN the refraction clinic the visual improvement cannot always be correlated with the degree of anisometropia. The literature shows that anisometropic amblyopia is a well-recognized condition, but opinions differ regarding the relationship between anisometropia and amblyopia. As the published studies do not consider the factor of eccentric fixation as a possible variable, we have investigated it...

PURPOSE. The Dutch population-based child health monitoring program includes regular preverbal (age range, 1-24 months) and preschool (age range, 36-72 months) vision screening. This study is on the contribution of an organized vision screening program to the detection of amblyopia. METHODS. A 7-year birth cohort study of 4624 children was started in 1996/1997 in Rotterdam. Vision screening dat...

PURPOSE We previously showed that anisometropic amblyopia affects the programming and execution of saccades and reaching movements. In our current study, we investigated whether these amblyopia-related changes simply are due to a reduction in visual acuity alone by inducing artificial blur in one eye in visually-normal participants. METHODS Twelve visually-normal participants performed saccad...