A new process or technology prompts questions. Whether considering photoscreening in general
or GoCheck Kids specifically, it’s important to get your questions answered. We've compiled a
list of some of the questions that have been posed to us recently.
Screening
Q. What’s your image rejection rate?
A. Our 90 running average is 1.89%. It is important to note that this is our non-
gradable rate. An image may not be gradable by IPA [Image Processing Algorithm(s)] or
manually for several reasons. Typically, It’s a result of patient compliance or staff
performance more than the app’s capabilities.
Q. What is GoCheck Kids’ sensitivity and specificity for amblyopia?
A. Sensitivity and specificity usually differ by study. Our validation study sensitivity
and specificity were 76% and 85%, respectively.
Arnold, R. et al. “The Positive Predictive Value of Smartphone Photoscreening in Pediatric Practices.” Journal of Pediatric
Ophthalmology and Strabismus 55 6 (2018): 393-396.
Age range
Q. Are you FDA-approved* for children over six years old? Any reason you need
to be if you aren’t?
A. We are clinically validated for ages 12 months to six years old, which is the
recommendation by the American Academy of Pediatricians for instrument-based
photoscreening. GoCheck Kids can be used outside that age range when working with
children who can’t reliably perform a visual acuity exam. (For example, if the child isn’t
neurotypical or isn’t an English speaker). But, it’s not recommended because the
AAPOS referral standards for refractive error aren’t highly refined beyond age six. As we age, the distance between our pupils grows, so the refraction of the eye with photorefraction will not be as accurate.
*The GoCheck Kids photoscreener is exempt from FDA medical device
requirements (known as 510K). Most class I and some class II devices are exempt
because the FDA has determined that it’s not required “to provide reasonable assurance
of safety and effectiveness for the device.” age, the distance between our pupils grows, so the refraction of the eye with photorefraction will not be as accurate.
Q. Are there any concerns about optotype tests for patients older than five years old?
A. There is little concern about accuracy or efficacy with the optimized presentation
of HOTV for children under seven and ETDRS for children seven and older. ATS and
ETDRS protocol studies recommend these optotype presentations to improve
performance in these age ranges.
There is always a chance that a visual acuity exam, even with a traditional Snellen chart,
may miss moderately hyperopic children. This is more likely to happen when the exam is
performed at 10 feet. This is usually caught with routine annual screening, and kids in
this age range can typically communicate about worsening hyperopia.
Results
Q. Does GoCheck Kids pick up strabismus?
A. Our smartphone photoscreening detects strabismus as ocular misalignment, which
is calculated using the difference in angle presentation of the interpreted position of the
corneal reflex of the eye relative to the pupil. It is a comparative reference analysis rather
than a discrete feature measurement like a prism diopter.
Q. Can you detect astigmatism?
A. Like other photoscreeners, ours is a screening or risk assessment tool, not a diagnostic
tool. GoCheck Kids aims to identify those children who need to be referred to a specialist
for more in-depth testing.
In single photo mode, GoCheck Kids can detect astigmatism, which presents as a co-
morbidity or another form of refractive error, such as hyperopia or myopia.
Pricing
Q. Do you bill by device or by provider?
A. GoCheck Kids provides the smartphones used for screening. The monthly subscription pricing includes the integrated platform, data, and support. Additional devices have an add-on price.
Q. How many devices do you recommend per office?
A. We typically recommend one device for every two to three practitioners.You can find a more comprehensive list of questions and answers on our FAQ page."
Have more questions?
We’d love to answer them. Send an email to our team or schedule a demo.
