PURPOSE To clarify differences in the dynamics of convergence eye movements in response to symmetrical stimuli between the dominant eye and the nondominant eye under natural viewing conditions. METHODS This study was conducted in 11 normal volunteers (age range, 22-30 years). The subject was seated on a chair, and the head was fixed using a bite-block. The dominant eye was determined with the...

We compare the statistical properties of structures normal and transverse to the line of sight which appear in theoretical N-body simulations of structure formation, and seem also to be present in observational data from redshift surveys. We present a statistic which can quantify this effect in a conceptually different way from standard analyses of distortions of the power-spectrum or correlati...

PURPOSE To describe an infant with PHACE(S) syndrome [posterior fossa anomalies (P), hemangiomas (H), arterial anomalies (A), cardiac abnormalities and coarctation of aorta (C), eye abnormalities (E), and the sternal defects (S)] with unusual strabismus, congenital glaucoma, and new systemic manifestations. METHODS A 6-month-old girl was referred with large hemangiomas on the left side of the...

Mini chromosome maintenance 10 (Mcm10) is an essential protein, which is conserved from S. cerevisiae to Drosophila and human, and is required for the initiation of DNA replication. Knockdown of Drosophila Mcm10 (dMcm10) by RNA interference in eye imaginal discs induces abnormal eye morphology (rough eye phenotype), and the number of ommatidia is decreased in adult eyes. We also observed a dela...

The intrinsic function of the brain stem-spinal cord networks eliciting the locomotor synergy is well described in the lamprey-a vertebrate model system. This study addresses the role of tectum in integrating eye, body orientation, and locomotor movements as in steering and goal-directed behavior. Electrical stimuli were applied to different areas within the optic tectum in head-restrained semi...

purpose: to evaluate the range of accommodation lag and it's signs and symptoms in 20-25 year-old female students at zahedan medical school, iran. methods: three-hundred female students were enrolled for assessment of accommodation. after exclusion of individuals with individuals with accommodation disorders in 3 steps including amplitude of accommodation, accommodative facility, and relat...

In this paper, we analyze the activity of single fibers in the optic nerve of a frog. Our method is to find what sort of stimulus causes the largest activity in one nerve fiber and then what is the exciting aspect of that stimulus such that variations in everything else cause little change in the response. It has been known for the past 20 years that each fiber is connected not to a few rods an...

purpose: to determine bacterial flora of the conjunctiva and lacrimal sac in adult patients with naso-lacrimal duct obstruction (nldo) in comparison with normal flora. methods: this study included 40 consecutive adult patients with nldo and 40 age- and sex matched healthy controls. specimens for bacterial culture were obtained from the involved and normal conjunc-tiva preoperatively and from th...

Background: Caffeine is a kind of methylxanthine whose consumption can promote the cognitive and executive functions of the human brain. Objectives: In this study, we seek to investigate the effect of drinking coffee on the period of the eye movement fixation component. Materials and Methods: The research was of the quasi-experimental type. 60 subjects were randomly divided into two group...