Understanding How A Vision Screener Works

Understanding How A Vision Screener Works

by Jaclyn Hurley

It is now possible to achieve pediatric vision testing in a school setting or in medical fairs thanks to revolutionary vision testing device known as the <A href="http://www.henanmedical.com/titmus-v2--vision-screener--sperian.html">vision screener</A>. This is a device that works in amazing manner and is able to capture several details from the eyes, perform measurement and compare them to predetermined data and give back results in a fraction of a second. It is now common in health fairs, preschools and grade schools, medical institutions and may also be available in hands of pediatricians and family doctors as it is not restricted to opticians only.

This important device is supported by a list of impressive testimonials resulting from validated studies which are qualified by positive reviews from the general medical profession and the public. It is so easy to use hence preferred by pediatricians, Lions club and school nurses. Given that the only necessary compliance is a short fixation of camera, this form of screening works for all children. The device works by producing a specially designed sound targeted to provoke the fixation.

The only required compliance is a short camera fixation. It has high level of accuracy and the results can be fully trusted. It is also able to screen two eyes all at once and the distance required for screening is about one meter or 3.3 feet from the camera. After just 0.8 seconds, the (PASS or REFER) results can be displayed on the screen automatically.

This means that even non-medical staff can actually perform the screening. The person to perform screening starts by pulling the camera trigger to start; this is followed by a sound that is meant to attract attention. The image of both eyes is captured on a white triangle on the screen that then allows for performing the necessary measurements. The recommended screening distance is one meter (3.3 feet) from the camera. The tolerance level is +-5 centimeters or +-2 inches. The results are then displayed on the screen in a matter of seconds.

Once the patient or a person to be screened is at the right distance from the camera; the operator then pulls the trigger which is followed by a unique sound used to help the patient focus at the device. The images of both eyes are then captured on a white screen after which the measurements of various parts are done automatically.

The diagnosis for astigmatism on the other hands depends on determination for cornea irregularities. For hyperopia and myopia, the farsightedness and nearsightedness are performed respectively. The pupil sizes are compared for anisocoria while the symmetry of eye alignment is necessary for the cornea reflex.

The comparison of refraction of the two eyes is done for anisometropia while astigmatism is diagnosed by determining the cornea irregularity. For myopia and hyperopia, the nearsightedness and farsightedness are determined respectively. Other conditions that can be detected include anisocoria through the comparison of the two pupil sizes corneal reflexes which requires that symmetric eye alignment is determined. All these are done automatically after which the result is displayed.

The results can be saved and printed in different formats thanks to an internal database. The database makes it possible to review the previous records in an organized or chronological order. In addition to this, the device is also cheaply available hence saves a lot of money and time that could be wasted in having to visit an optician.



You can visit <a href="http://www.henanmedical.com/titmus-v2--vision-screener--sperian.html">www.henanmedical.com</a> for more helpful information about Understanding How A Vision Screener Works.

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