Up to date easy to use and well illustrated clinical manual of contact lenses 5th edition helps both students and practitioners fit evaluate and troubleshoot contact lens issues in everyday practice written by renowned experts in the field this practical guide is designed for quick access to key information and includes sample cases nomograms and proficiency checklists that summarize and emphasize important points. Up to date easy to use and well illustrated clinical manual of contact lenses 5th edition helps both students and practitioners fit evaluate and troubleshoot contact lens issues in everyday practice written by renowned experts in the field this practical guide is designed for quick access to key information and includes sample cases . Designed to be used as a quick reference this fourth edition of the clinical manual of contact lenses allows readers to easily find the topic and information they need without having to search through an entire chapter to find it rigid gas permeable lens design and fitting soft lens problem solving astigmatic management and bifocal correction are just a few of the subjects covered in this . The chapter on the optics of contact lenses has a table of key words of contact lens optics without definitions the purpose of which is not obvious however the chapter has all the formulae that may be required for clinical calculations applying optical theory to real cases is the key issue