Corneal higher-order aberrations in amblyopia.

Purpose: To investigate the amount, type, and role of corneal higher order aberrations in both isotropic and anisometropic amblyopic adult patients.

Methods: A total of 125 eyes of 78 patients with age ranging from 18 to 67 years (30 patients with unilateral amblyopia, 17 with bilateral amblyopia, and 31 normal eyes considered as the control group) were included. All eyes received a comprehensive ophthalmologic examination that included corneal topographic and aberrometric analysis with the CSO system.

[The influence of stimulation dopaminergic D, i D2 receptors in lateral geniculate body on flash visual evoked potentials (FVEP) in rats].

Purpose: The topic of this paper is to define the influence of stimulation dopaminergic D1 i D2 receptors in lateral geniculate body by flash visual evoked potentials (FVEP).

Material And Methods: Wistar rats were examined. There were stereotaxically implanted with guide caniula into the lateral geniculate body to inject substances and with VEPs electrodes on the skull and on the surface of visual cortex.

[The influence of dopamine injected into the lateral geniculate body on flash visual evoked response in rats].

Purpose: Numerous neurotransmitters and neuromodulators operating on all levels of the visual system, influence the parameters of cortical evoked response. The aim of this study was to find the influence of dopamine (DA) injected into the lateral geniculate body (nucleus) on flash visual evoked response (FVEP).

Material And Methods: The experiments were performed on adult Wistar rats.

[Visual evoked potentials (FVEP) after the prenatal exposure to heavy metals--experimentals studies].

Purpose: To find out, if any and how deep alterations in visual tract are due to prenatal intoxication by heavy metals such as: cadmium (Cd), lead (Pb), mercury (Hg) and manganese (Mn). The measure of these alterations were the changes in flash visual evoked potentials after prenatal intoxication.

Material And Methods: The experiments were carried out on 55 white newborns Wistar rats, which were divided into 5 groups: control group (14 rats), Cd group (12), Pb (6), Hg (14) and Mn (9).

[Influence of prenatal exposition for selenium on visual evoked potentials (FVEP) in rats].

Selenium is an essential trace element in lower concentration and toxic in higher one. The aim of the study was to find out if the small doses of selenium taken by pregnant rats change the visual evoked potential (FVEP) curve in newborns. The FVEP was done in 4-6 month old white, Wistar, offsprings rats.

Influence of dopamine on flash visual evoked potentials (FVEP) in prenatally mercury intoxicated rats.

The female adult white Wistar rats were given tap water (control) or 50 ppm of methylmercury chloride (MMC) ad libitum throughout their pregnancies. Newborn rats drank mother's milk during the first 21 days after delivery and then only tap water. The study was carried out on three-month old offsprings of white Wistar rats.

[Electrophysiology in optic neuropathy].

The aim of this work is to present current state of knowledge on the subject of electrophysiological diagnostic methods in optic neuropathy. To evaluate optic nerve function we can use pattern and flash visual evoked cortical potentials (VEPs) and pattern electroretinography (ERG). Each method is specific and sensitive in other cases of impairment of the optic nerve (neuritis, toxic, hereditary, entrapment and ischemic neuropathy).