Test Visual Oftalmologia：在 App Store 上的内容
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Test Visual Oftalmologia
开发者：ipoint Comunicacion Masiva SL
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Test visual es la aplicación gratuita que puede detectar si tienes problemas de visión.Gracias a sus 7 test es como tener un oftalmólogo en el bolsillo, puedes averiguar que nivel visual tienes, si tienes miopía, astigmatismo o algún problema macular entre otros.Además te indica como contactar con el oftalmólogo para pasar una revisión en persona.
版本 1.0 中的新功能
Cambio de propietarioFuncionamiento mejorado
此 App 专为 iPhone 和 iPad 设计免费类别: 版本: 1.0大小： 8.7 MB语言: 英语开发商: ipoint Comunicacion Masiva SL兼容性： 需要 iOS 6.1 或更高版本。与 iPhone、iPad 和 iPod touch 兼容。
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更多ipoint Comunicacion Masiva SL的产品From Wikipedia, the free encyclopedia
Positive Hirschberg sign: the light falls on the centre of the right pupil, but is
to the cent therefore, the person in the picture has left .
Negative Hirschberg sign: the reflections form congruent points on both corneas.
In the fields of
and , the Hirschberg test, also Hirschberg corneal reflex test, is a screening test that can be used to assess whether a person has
(ocular misalignment).
A photographic version of the Hirschberg is used to quantify strabismus.
It is performed by shining a light in the person's
and observing where the light reflects off the . In a person with normal ocular alignment the light reflex lies slightly nasal from the center of the cornea (approximately 11 prism diopters—or 0.5mm from the pupillary axis), as a result of the cornea acting as a temporally-turned convex mirror to the observer. When doing the test, the light reflexes of both eyes are compared, and will be symmetrical in an individual with normal fixation. For an abnormal result, based on where the light lands on the cornea, the examiner can detect if there is an
(abnormal eye is turned out),
(abnormal eye is turned in),
(abnormal eye higher than the normal one) or
(abnormal eye is lower than the normal one).
the light lands on the medial aspect of the cornea. In
the light lands on the lateral aspect of the cornea. In
the light lands on the inferior aspect of the cornea. In hypotropia the light lands on the superior aspect of the cornea. A
can tell you the extent of the eso/exotropia.
Individuals can suffer from several tropias at once. In , it is not uncommon to see an esotropia (due to pathology of the )
with a hypotropia (due to pathology of the ).
The Krimsky test is essentially the Hirschberg test, but with prisms employed to quantitate deviation of ocular misalignment by determining how much prism is required to centre the reflex
The Krimsky test is advisably used for patients with tropias, but not with phorias.
The technique was developed by German ophthalmologist
who in 1886 used a
to observe the light reflex in an eye with strabismus.
Eskridge JB, Wick B, Perrigin D. "The Hirschberg test: a double-masked clinical evaluation." Am J Optom Physiol Opt. ):745-50.  .
Schwartz, Gary S. (). . SLACK Incorporated.  .
Wheeler, M.
Trans Am Ophthalmol Soc. 7–564.
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