Welch Allyn Spot VS100 Basic Instructions page 2

Introduction - Welch Allyn Spot Vision Screener VS100
These Basic Instructions are a guide designed to help you understand the basic capabilities and operation of
your Spot Vision Screener VS100 as it will be used to vision screen students for the Lions Screen Kids Sight
vision screening program.
The vision screener is a hand-held instrument with a video display on the rear of the unit that provides
visualization of the student and assists with alignment. The video display also provides user interface
functionality for data input and display. The vision screener provides both visual and audible cues to attract
the student's attention and gaze. The device generates a rapid collection of the data for easy evaluation of
the most difficult students with limited compliance. Each screening provides simultaneous binocular
assessment of the student's refraction, pupil size and gaze.
The Spot Vision Screener is intended to produce optical images that can help identify refractive errors and
ocular misalignments by detecting special light reflexes from each eye during screening. The Spot Vision
Screener evaluates these light reflexes from the retina to estimate refractive error. It also estimates pupil
size, pupil distance and eye gaze deviation. It is intended for use on subjects six months of age through
adults.
This type of photoretinoscopy device will be used to identify whether the subject should be referred to an
eye care specialist for further evaluation. This screening is not intended to replace a full eye examination.