title: Mechanical properties of protective spectacles fitted with corrective lenses.
abstract: The majority of commercially available corrective spectacles used by workers do not provide effective eye protection against mechanical hazards in the workplace. One of the risks commonly occurring during work is hitting the head on some protruding elements, such as components of machines, buildings or tree branches in a forest. Because of the considerable weight of the human head and the speed of movement during impact, this type of accident may be very serious. This article presents a method of testing the mechanical strength of corrective lenses, simulating the results of an impact of the head on elements of workplaces. The results of tests of commercially available materials used for the construction of corrective and protective spectacles are also presented and discussed.
authors.affiliation: a Central Institute for Labour Protection - National Research Institute (CIOP-PIB) , Poland.
authors.forename: Adam
authors.initials: A
authors.lastname: Pościk
authors.affiliation: a Central Institute for Labour Protection - National Research Institute (CIOP-PIB) , Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Jachowicz
mesh_terms: D004867:Equipment Design / Q000295:instrumentation*; D004868:Equipment Failure; D019544:Equipment Failure Analysis; D005131:Eye Injuries / Q000517:prevention & control; D005135:Eye Protective Devices / Q000592:standards*; D005139:Eyeglasses; D006801:Humans; D060051:Occupational Injuries / Q000517:prevention & control; D011076:Polycarboxylate Cement / Q000592:standards
chemical_list: D011076:Polycarboxylate Cement; C005506:polycarbonate
keywords: corrective spectacles; impact resistance; presbyopia; safety spectacles