hyperopia/dopaminas

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The use of levodopa in the treatment of bilateral amblyopia secondary to uncorrected high hypermetropia.

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The standard treatment of bilateral amblyopia secondary to uncorrected high bilateral hypermetropia has been spectacles and time. The patient described here failed to show adequate improvement in visual acuity after 18 months of standard treatment. Visual acuity improved dramatically when the

Flicker parameters are different for suppression of myopia and hyperopia.

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Axial eye growth rates in the chicken are controlled by local retinal image-processing circuits. These circuits quantify the loss of contrast for different spatial frequencies and promote axial eye growth rates in correlation with the amount of retinal image degradation ("deprivation myopia"). They

Bright Light Suppresses Form-Deprivation Myopia Development With Activation of Dopamine D1 Receptor Signaling in the ON Pathway in Retina.

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To determine whether dopamine receptor D1 (D1R) signaling pathway activation by bright light (BL) in specific retinal neuronal cell types contributes to inhibiting form-deprivation myopia (FDM) in mice. Mice (3-weeks old) were raised under either normal light (NL: 100-200 lux) or BL (2500-5000 lux)

Refractive errors and schizophrenia.

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BACKGROUND Refractive errors (myopia, hyperopia and amblyopia), like schizophrenia, have a strong genetic cause, and dopamine has been proposed as a potential mediator in their pathophysiology. The present study explored the association between refractive errors in adolescence and schizophrenia, and

Visually induced changes in components of the retinoic acid system in fundal layers of the chick.

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Eye growth is visually regulated via messengers that are released from the retina. The retina involves a yet unknown algorithm to analyse the projected image so that the appropriate growth rates for the back of the eye are ensured. One biochemical candidate that could act as a growth controller, is

Retinal degeneration increases susceptibility to myopia in mice.

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OBJECTIVE Retinal diseases are often associated with refractive errors, suggesting the importance of normal retinal signaling during emmetropization. For instance, retinitis pigmentosa, a disease characterized by severe photoreceptor degeneration, is associated with myopia; however, the underlying

Eye growth and myopia development: Unifying theory and Matlab model.

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The aim of this article is to present an updated unifying theory of the mechanisms underlying eye growth and myopia development. A series of model simulation programs were developed to illustrate the mechanism of eye growth regulation and myopia development. Two fundamental processes are presumed to

Short-Wavelength (Violet) Light Protects Mice From Myopia Through Cone Signaling.

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Exposure to short-wavelength light influences refractive development and inhibits myopic development in many animal models. Retinal mechanisms underlying this response remain unknown. This study used a mouse model of lens-induced myopia to evaluate the effect of different wavelength

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