Canon CP-TX1 camera � As a screening tool for amblyogenic risk factors

Purpose: To evaluate the Canon CP?TX1 camera as a screening tool for ARFs in a pediatric population and estimate the prevalence of ARFs. Methods: In a pediatric outpatient space, largely in the immunization clinic, after obtaining parental consent, we encouraged children to be photographed from a distance of 5 feet in a dim room by using a CP?TX1 camera with the red?eye reduction feature off. Based on the captured red reflex, children were labeled as normal (symmetrical red reflexes in the two eyes, with no visible crescents); all others were considered as abnormal or positive for ARFs. All photographed children were assessed by an optometrist/refractionist for VA by age?appropriate methods. Data were entered into a 2 � 2 contingency table on statpages.org, and diagnostic indices were calculated with 95%CI. Results: With a sample of 262 children, we obtained a sensitivity of 0.82, a specificity of 0.98, a positive predictive value of 0.92, a negative predictive value of 0.94, a positive likelihood ratio of 41.06, a negative likelihood ratio of 0.17, and a prevalence of 0.24 for ARFs. Conclusion: CP?TX1 performed well as a screening tool to identify ARFs in children. Placing such a camera in an immunization clinic offers a chance to identify children with ARFs at a time when amblyopia is eminently reversible.

Keywords

Amblyogenic risk factors, Br點kners reflex, Immunization clinic

Citation

Raza Syed Aisha, Amitava Abadan Khan, Gupta Yogesh, Afzal Kamran, Kauser Farnaz, Saxena Juhi, Masood Anam, Bose Aparna, Singh Ramprakash. Canon CP-TX1 camera � As a screening tool for amblyogenic risk factors. Indian Journal of Ophthalmology. 2022 Apr; 70(4): 1313-1316

URI

https://imsear.searo.who.int/handle/123456789/224250

Collections

Indian Journal of Ophthalmology

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