Abstract:
PURPOSE:To examine the immediate effect of ocular rubbing on corneal topography. METHODS:Corneal topography and analysis were performed before, immediately after, and 5 minutes after eyelid rubbing in 29 volunteers without ocular disease. RESULTS:The surface regularity index increased from a baseline of 0.24 to 0.91 ( p< 0.0001) immediately after rubbing and returned to baseline after 5 minutes. The surface asymmetry index increased from 0.27 to 0.89 ( p= 0.0018) immediately after rubbing. There was a small amount of astigmatism induced immediately by rubbing (0.5 diopter) ( p= 0.01). CONCLUSIONS:Ocular rubbing should be avoided prior to standard corneal topography. The increased surface regularity index may reflect the alterations of the tear film and/or the molding of the corneal surface.
journal_name
Corneajournal_title
Corneaauthors
Mansour AM,Haddad RSdoi
10.1097/00003226-200211000-00004subject
Has Abstractpub_date
2002-11-01 00:00:00pages
756-8issue
8eissn
0277-3740issn
1536-4798journal_volume
21pub_type
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