Starting with plano in retinoscopy and using an appropriate working lens at 66 cm, a "with" reflex is most commonly obtained in which refractive error?

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When performing retinoscopy, the reflex observed can provide insight into the refractive error of the eye. In this scenario, starting with plano (indicating no refractive error) and using a working distance lens at 66 cm, a "with" reflex suggests that the eye is focusing light in a way that is consistent with a specific type of refractive condition.

In the case of hyperopia (farsightedness), the eye struggles to properly focus on nearby objects, which results in a "with" reflex during retinoscopy. When light is directed into the eye, it converges behind the retina, leading to the observed reflex moving in the same direction as the light beam (a "with" reflex). This is characteristic of hyperopia, especially when correcting for additional distance.

Astigmatism can present with varying reflexes depending on the meridians affected, and although myopia can also create a "against" reflex, typically it does not result in a "with" reflex under the given circumstances if it is dominant. Esophoria might affect vergence and can produce different reflex behaviors but does not directly relate to the principles of retinoscopy in the same straightforward manner.

Thus, the presence of a "with

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