5 ফলাফল
This study aimed to investigate the association between environmental exposure to tobacco smoke (ETS) during early life and astigmatism in Chinese preschool children. In this cross-sectional study, information concerning prenatal and postnatal ETS exposure at three stages of early life (during
This study investigated the ocular response of young chicks to astigmatic errors imposed by spectacle lenses and as a related issue, we examined the nature and prevalence of astigmatism in young chicks, and its relation to corneal development and natural emmetropization. Normal hatchling chicks
BACKGROUND
Changes in children visual acuity that are not treated carry a high risk of irreversible consequences.
OBJECTIVE
To determine the prevalence of low visual acuity and to diagnose the ophthalmologic diseases that cause it in six-year-old children from Santa Fe City,
This study compared the compensatory response to hyperopic defocus imposed on chicks in two different ways: (1) with-10 D spectacle lenses, and (2) with plano hard contact lens. The hyperopia seen with the contact lenses in situ was a consequence of their flat profile relative to the chick cornea,
OBJECTIVE
To investigate prevalence and risk factors for myopia, hyperopia and astigmatism in southern India.
METHODS
Randomly sampled villages were enumerated to identify people aged ≥40 years. Participants were interviewed for socioeconomic and lifestyle factors and attended a hospital-based