Methods A comparison study was made between 50 patients wearing monocles and 50 patients wearing progressive multi-focal spectacles about their degree of phoria taken with Von Graefe test at the start of wearing the spectacles and 3, 6 months later.

• 方法用von Graefe法测定50例单光眼镜配戴者及50例渐进多焦近视眼镜配戴者在配戴初,配戴后3、6月隐斜量。