BS 5043:1973

Co-operating organizations
Foreword
Specification
1 General
1.1 Scope
1.2 Definitions
1.3 Illuminated models excluding projection types
1.4 Safety
2 Book holders
2.1 General
2.2 Book holders which can be attached to a bed head
      for reading in supine positions
2.3 Floor standing book holders
2.4 Book holders to stand on bedtables
3 Magnifiers
3.1 General
3.2 Material
3.3 Surface defects
3.4 Back vertex power
3.5 Lens aperture dimensions
3.6 Quality of finish
3.7 Determination of lens power
3.8 Determination of magnification
3.9 Determination of the field of view
3.10 Hand-held magnifiers
3.11 Table models with or without a book holder
4 Prismatic spectacles (non-corrective) for
      recumbent patients
4.1 Requirements
4.2 Performance requirements
4.3 Desirable performance characteristics
Appendices
A Information and recommendations on the use of
      magnifiers and prismatic spectacles
B Information regarding a range of hand-held
      magnifiers
Figure
1 Book holder horizontal adjustment

Specifies requirements for bookholders, magnifiers and some general requirements for non-corrective prismatic spectacles for recumbent patients. Information and recommendations on the use of magnifiers and prismatic spectacles and information regarding a range of hand-held magnifiers are given in appendices.