Linked Life Data

3839109

Source:http://linkedlifedata.com/resource/pubmed/id/3839109

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1985-7-24
pubmed:abstractText
Mass should be considered as one of several clinically malleable physical properties of contact lens materials. Lenses with identical posterior surface designs and back vertex powers may have different front surface parameters and thicknesses when manufactured from materials of several refractive indices. Change in anterior surface design affects overall lens volume, which combines with differences in specific gravity to change overall lens weight or mass. Clinical in situ contact lens performance may be affected in many ways by changes in anterior surface profile, volume, and overall mass, although back surface design and effective power is held constant. This study presents methodology for comparing the predicted mass of specific lens designs made from different rigid lens materials. Both theoretical and sample values are presented and discussed. Results suggest that specific gravity by itself may be a good clinical guide to the relative mass of identically designed lenses made of different materials. However, as lens mass can affect lens performance in several ways, it might be worthwhile for the clinician and/or manufacturer to develop methods whereby such calculations were automatically provided in each individual situation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0093-7002
pubmed:author
pubmed:issnType
Print
pubmed:volume
62
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
322-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Mass of rigid contact lenses.
pubmed:publicationType
Journal Article, Comparative Study