6533b851fe1ef96bd12aa124

RESEARCH PRODUCT

<title>Electronic eye occluder with time-counting and reflection control</title>

subject

description

ABSTRACT In pediatric ophthalmology 2 – 3 % of all the children are impacted by a visual pathology – amblyopia. It develops if a clear image isn’t presented to the retina during an early stage of the developmen t of the visual system. A common way of treating this pathology is to cover the better-seeing eye to force the „lazy” eye to learn seeing. However, children are often reluctant to wear such an occluder because they are as hamed or simply because they find it inconvenient. This fact requires to find a way how to track the regi me of occlusion because results of occlus ion is a hint that the actual regime of occlusion isn’t that what the optometrist has recommended. We design an electronic eye occlud er that allows to track the regime of eye occlusion. We employ real-time clock DS1302 providing time information from seconds to years. Data is stored in the internal memory of the CPU (EEPROM). Th e MCU (PIC16F676) switches on on ly if a mechanical switch is closed and temperature has reached a satisfactory level. The occlusion is registered be tween time moments when the infrared signal appeared and disappeared. Keywords: Occluder, amblyopia, objective monitoring, data logger