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1. General |
2. Projections |
3. material components |
4. Lenses
4.1 General
4.2 Impact strength
4.3 Defects 4.4 Leakage |
5 Compressive strength of eye cup |
6 Water seal 6.1 Configuration 6.2 Adhesion of eye seal to eye cup |
7 Head strap 7.1 General 7.2 Material |