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Quality of vision with spectacles, special silicone hydrogel and gas permeable ...

Purpose: To evaluate optical quality and visual function in keratoconus patients corrected with RGP contact lenses and a novel special design of silicone hydrogel contact lens. Materials and methods: Twelve eyes of six patients with keratoconus were enrolled to experience a new soft contact lens (Soft-K) for keratoconus made of a silicone-hydrogel material and the outcomes were compared to the performance wit...

Cambios en la elevación en la curvatura anterior y posterior de la córnea antes...

Shedding light on night myopia

First described during the 18th century, the cause of night myopia remains a controversial topic. Whereas several explanations have been suggested in the literature, particularly related with accommodation or chromatic shift in scotopic light conditions, no definitive explanation for its aetiology has been provided. We describe an experiment in which ocular refractive state was objectively and subjectively meas...

Proclear EP vs placebo : visual outcomes and symptoms of asthenopia in non-pres...

Anterior and posterior corneal elevation after orthokeratology and standard and...

Quality of life with different modes of visual correction

Impact of in vivo soft contact lens dehydration in perception of light distortion

Prevalence of refractive conditions in the general population attending eye car...

The purpose of this study was to report the fi rst estimations on the prevalence of refractive conditions in a Portuguese population attending several ophthalmologic and optometric clinics within the same region. Methods: Values of non-cycloplegic subjective refraction from the right eye of 4288 patients (40.08±18.75 years) were analyzed to estimate the prevalence of refractive conditions as a function of age a...