Graded foils - Occlusion foils 8 7.1 ALL RIGHTS RESERVED © BANGERTER OCCLUSION FOILS Occlusion foils are a system of graded thin flexible foils of varying degrees of transparency that equalize the spatial contrast of the dominant eye to that of the amplyopic eye. They cling to the spectacle lens of the healthy eye to improve the function of the weaker eye. There are 10 levels of occlusion - see table below. Use: These are used to treat amblyopia, exclusion and the anomalous retinal correspondence found in amblyopia; problems relating to correlation, monolateral aphakia and temporary diplopia. Examples of vision with different occlusion levels Dimensions: 65x65 mm. - 1 pc. / Ref. Ref. 08001 Visus ~1.0 - N 1 Visual Acuity ~20/20 Ref. 08002 Visus ~0.8 - N 2 Visual Acuity ~20/265 Ref. 08003 Visus ~0.6 - N 3 Visual Acuity ~20/30 Ref. 08004 Visus ~0.4- N 4 Visual Acuity ~20/50 Ref. 08005 Visus ~0.3 - N 5 Visual Acuity ~20/70 Ref. 08009 Visus ~0.2 - N - Visual Acuity ~20/100 Ref. 08006 Visus ~0.1 - N 6 Visual Acuity ~20/200 Ref. 08007 Visus <0.1 - N 7 Visual Acuity ~20/300 Ref. 08008 Visus 0.0 Visual Acuity none Ref. 08000 Visus LP - N 0 Visual Acuity none
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