title: Rapid measurement of corneal diameter in children: validation of a clinic-based digital photographic technique.
abstract: Measuring corneal diameter is often difficult in infants, but its importance in certain circumstances cannot be overstated. Most available techniques for obtaining corneal diameter measurement are threatening to the child: the gold standard measurement technique relies on calipers and a ruler and necessitates general anesthesia for most children under the age of 7 years. Consequently, this important element of the pediatric eye examination is often not performed in clinic. We describe and prospectively validate a digital photographic technique for measuring corneal diameter, which is easy to perform, quick, nonthreatening, and provides an accurate corneal diameter measurement.
authors.affiliation: Department of Pediatric Ophthalmology, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada.
authors.forename: Narman
authors.initials: N
authors.lastname: Puvanachandra
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Lyons
mesh_terms: D002648:Child; D002675:Child, Preschool; D003315:Cornea / Q000473:pathology*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation / Q000592:standards*; D005901:Glaucoma / Q000151:congenital / Q000473:pathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D010781:Photography / Q000379:methods* / Q000592:standards*; D011446:Prospective Studies; D012015:Reference Standards; D015203:Reproducibility of Results