Patching for Amblyopia: A Novel Occlusion Dose Monitor for Glasses Wearers to Track Adherence

To evaluate the acceptability of a novel occlusion dose monitor (ODM) for glasses wearers with amblyopia. The novel ODM consists of a patch worn over the glasses, a logger affixed to the glasses frame, and a system that processes the logged data for interpretation by an algorithm.

In this pilot study, pediatric amblyopes (ages 2-8) were recruited for a cosmesis test of a sham logger for a 1-week period. Patients were then recruited to test a functional ODM for a 2-week period and their parents were asked to document patch wear in a diary. Feedback was solicited using a modified Pediatric Eye Disease Investigator Group (PEDIG) Amblyopia Treatment Index (ATI).

Five children tested the sham logger and eight children tested the functional ODM. Early feedback recommended esthetic modifications including the use of colored shrink wrap to affix the logger to the glasses' frame. The modified patch did not reduce patients' willingness to wear the patch as compared to a standard patch. ODM-recorded wear correlated with diary-recorded wear. The specific timestamps for wear were identical for patients with good ODM-diary concordance.

The novel ODM is acceptable for parents and children and correlates with diary records of patch wear.