Size 7.7″W x 10.6″L x 5.0″H
Weight 4.35 lbs.
Focusing distance 3 Feet
Battery charge time 3 hours typical, 4.5 hours maximum
Images per charge Approx. 250
Storage Capacity 2000 images
Communication type Ethernet



Clinical Analysis

Studies show photoscreening technology to be more accurate than traditional screening methods6
iScreen Vision’s independent, centralized, off-site clinical analysis is unique. Each iScreen Vision image is reviewed by a highly-trained technician who analyzes thousands of images each year. iScreen Vision analysts undergo a thorough and rigorous training developed by a pediatric ophthalmologist and an engineer instrumental in the design of iScreen Vision technology. iScreen Vision technicians are closely monitored for quality assurance. This feature ensures a high degree of quality control compared to other devices that depend on only field or automated software analysis. In one study, over 90 percent of the children identified by photoscreening technology as having a potential vision abnormality were confirmed to have a problem4 – a major advance over existing practice. Researchers estimate that only 20 percent of children receive a screening eye examination before entering school.5 One study found traditional methods of eye examination in a pediatric practice had an accuracy rate of less than 10 percent.6

iScreen Vision screens for vision problems including refractive errors, alignment problems, and other vision abnormalities that could lead to amblyopia – the leading cause of monocular vision loss.

Digital Images

The image captured by the iScreen Vision Scanner 3000 is possible due to a sophisticated set of rapidly timed flashes at different angles. This enables us to digitally capture “red reflex” images of the eye as shown here.

The light pattern captured in the image varies according to the patient’s potential vision issues. When analyzed by iScreen’s trained technicians, these light patterns yield a variety of information from normal vision to potentially serious conditions, including the following:

Near-sightedness (Myopia)
Far-sightedness (Hyperopia)
Alignment Problems (Strabismus)
Unequal focusing of the eyes (Anisometropia)
Abnormal curvature of the cornea, leading to distorted vision (Astigmatism)
Unequal pupil sizes (Anisocoria)
Media opacities (Cataracts and others)
Irregular-shaped pupil (Coloboma)
Drooping lid (Ptosis)

It is particularly important to detect amblyogenic risk factors early – ideally before age 4. As many as 5 percent of all children in the U.S. suffer from amblyopia,7 which is easily treatable with an eye patch or eye drops. Unfortunately, if amblyopia is not detected, diagnosed, and treated within the optimal age range, it can lead to permanent vision loss or blindness.

iScreen Vision’s off-site analysis provides fast screening results.

What the medical community is saying about digital vision screening… learn more.


4. Longmuir, S., Pfeifer, W., Leon, A., Olson, R., Short, L., Scott, W., Nine-year Results of a Volunteer Lay Network Photoscreening Program of 147,809 Children Using MTI PhotoScreener in Iowa. Ophthalmology. March 2010.
5. Castanes MS. The underutilization of vision screening (for amblyopia, optical anomalies and strabismus) among preschool age children. School of Public Health, The University of Texas, Health Science Center at Houston, USA. Binocul Vis Strabismus Q. 2003;18(4):217-32.
6. Salcido, A.A., Bradley, J., Donahue, S.P., The Predictive Value of Photoscreening and Traditional Screening of Pre-school Children. Journal of AAPOS. Vol. 9, No. 2, April 2005.
7. Simons K. Preschool vision screening: rationale, methodology and outcome. Surv Ophthalmol 1996;41:3-30