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J AAPOS. 2013 Apr;17(2):144-8. doi: 10.1016/j.jaapos.2012.11.005.

Intraobserver reliability of contact pachymetry in children.

Collaborators (255)

Schloff S, Daffron ED, Host VE, Wolf RA, Silbert DI, Singman EL, Matta NS, Brubaker CM, Burkhart TL, Garcia SA, Gilmore TD, Jostes DM, Keefer CM, Keene AB, Leckemby GL, Tamkins SM, Perlman AS, Olivares EM, Parra M, Exposito Y, Fernandez SM, Singh DS, Cruz OA, Davitt BV, Anderson JS, Miyazaki EA, Ahmad F, Grant AD, Shultz W, Talley BE, Johnson DA, Drake K, Suh DW, Mendoza MN, Parrino A, Countryman RJ, Craig SL, Fergus LM, Hall AD, Spillman JL, Spooner GA, Taylor DC, Frazier M, Hopkins KT, Marsh-Tootle WL, Walk JM, Weise KK, Baldwin CH, Hill MP, Cotter SA, Barnhardt CN, Chen AM, Chu RH, Edwards LM, Heyman CL, Huang K, Roberts TL, Song E, Wei JX, Bartolacci MM, Parker SM, Ticho BH, Khammar AJ, Clausius DA, Coletta JB, Giers SL, Imler BC, Silva C, Manny RE, Fern KD, Solis GG, Enyedi LB, Freedman SF, Lin AA, Wallace DK, Yanovitch TL, Young TL, Jones SK, Fuller CE, Headen CW, Kashyap NX, Rodriguez IJ, Sala NA, Whitling BH, Hodde RM, Zeto VL, Petersen DB, McMurtrey JR, Morrell BA, Sylvester KL, Davis PL, Anderson KA, Hulett KR, Bloomquist CS, Velazquez SJ, Gearinger MD, Francis D, Aaker JD, Addams LM, Lambert SR, Hutchinson AK, Lenhart PD, Robb RA, Shainberg MJ, Esmail FQ, Phoenix VP, Repka MX, Christoff AX, Goodman CR, Liu X, Astle WF, Cooper LL, Romanchuk KG, Hebert AM, Peddie HJ, Ruddell S, Sandusky HN, Beer TL, Berscheid C, Kerr C, Liu SX, Racine MK, Bremer DL, Cassady CM, Golden RP, Rogers DL, Rogers GL, Fellows RR, Wagner AJ, Forbes BJ, Anninger WV, Binenbaum G, Davidson SL, Mills MD, Quinn GE, Karp KA, Kilmartin S, Summers CG, Anderson JS, Bothun ED, Christiansen SP, Holleschau AM, de Melo AI, Downes SJ, Hogue KM, Merrill KS, Karr DJ, Reznick LG, Stout AU, Summers AI, Wheeler DT, Bonsall DJ, Lopper SL, North RB, Bowman CS, Donahue SP, Kehler LF, Morrison DG, Fraine LA, Franklin CC, Teed RW, Cole KB, Bozic ME, Bradham CU, Glaser SR, Pacheco MM, Senderowitsch N, Girgis NM, Tea YC, Tyler JA, Bade A, Bacal DA, Martin D, Moran KD, O'Hara M, Bartolacci MM, Van Wolferen M, Goldblum TA, Alfaro A, Bradfield YS, France TD, Soderling BH, Longmuir S, Leon A, Olson RJ, Ottar Pfeifer WI, Donahue JP, Silvia ME, Branco DP, Levada AJ, Capobianco C, Walker TL, Abrams MJ, Ingala LJ, Silva G, Neely DE, Whitaker ME, Robbins SL, Castro EF, Roa A, Kraker RT, Beck RW, Cagnina-Morales CM, Cagnina DA, Chandler DL, Clark LE, Costa C, Diamond ER, Donahue Q, Fimbel BP, Foster NC, Gumke MR, Kaminski BM, Lazar EL, Lee SV, Lester LA, Melia BM, Moke PS, Philips M, Rojas DE, Shrader SL, Everett DF, Bradfield YS, Repka MX, Davitt BV, Neely DE, Kraker RT, Melia BM, Bradfield YS, Davitt BV, Freedman SF, Holmes JM, Melia BM, Neely DE, Repka MX, Silbert DI, Suh DW, Tucker DL, Holmes JM, Bacal DA, Beck RW, Birch EE, Christiansen SP, Cotter SA, Everett DF, Hoover DL, Huston PA, Kraker RT, Lee KA, Matta NS, Morrison DG, Repka MX, Rutstein RP, Scheiman MM, Wallace DK.

Author information

1
University of Alabama at Birmingham School of Optometry, Birmingham, Alabama, USA. pedig@jaeb.org

Abstract

BACKGROUND:

Central corneal thickness (CCT) is an important measurement in the treatment and management of pediatric glaucoma and potentially of refractive error, but data regarding reliability of CCT measurement in children are limited. The purpose of this study was to evaluate the reliability of CCT measurement with the use of handheld contact pachymetry in children.

METHODS:

We conducted a multicenter intraobserver test-retest reliability study of more than 3,400 healthy eyes in children aged from newborn to 17 years by using a handheld contact pachymeter (Pachmate DGH55; DGH Technology Inc, Exton, PA) in 2 clinical settings--with the use of topical anesthesia in the office and with the patient under general anesthesia in a surgical facility.

RESULTS:

The overall standard error of measurement, including only measurements with standard deviation ≤5 μm, was 8 μm; the corresponding coefficient of repeatability, or limits within which 95% of test-retest differences fell, was ±22.3 μm. However, standard error of measurement increased as CCT increased, from 6.8 μm for CCT less than 525 μm, to 12.9 μm for CCT 625 μm and greater. The standard error of measurement including measurements with standard deviation >5 μm was 10.5 μm. Age, sex, race/ethnicity group, and examination setting did not influence the magnitude of test-retest differences.

CONCLUSIONS:

CCT measurement reliability in children via the Pachmate DGH55 handheld contact pachymeter is similar to that reported for adults. Because thicker CCT measurements are less reliable than thinner measurements, a second measure may be helpful when the first exceeds 575 μm. Reliability is also improved by disregarding measurements with instrument-reported standard deviations >5 μm.

PMID:
23622447
PMCID:
PMC3639436
DOI:
10.1016/j.jaapos.2012.11.005
[Indexed for MEDLINE]
Free PMC Article
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