TY - JOUR
T1 - Comparison of near visual acuity and reading metrics in presbyopia correction
AU - Gupta, Navneet
AU - Wolffsohn, James S. W.
AU - Naroo, Shehzad A.
N1 - NOTICE: this is the author’s version of a work that was accepted for publication in the Journal of Cataract & Refractive Surgery. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Gupta, N, Wolffsohn, JS & Naroo, SA 2009, 'Comparison of near visual acuity and reading metrics in presbyopia correction', Journal of cataract and refractive surgery, vol 35, no. 8 (2009) DOI http://dx.doi.org/10.1016/j.jcrs.2009.03.026
PY - 2009/8
Y1 - 2009/8
N2 - PURPOSE: To provide a consistent standard for the evaluation of different types of presbyopic correction.
SETTING: Eye Clinic, School of Life and Health Sciences, Aston
University, Birmingham, United Kingdom.
METHODS: Presbyopic corrections examined were accommodating intraocular
lenses (IOLs), simultaneous multifocal and monovision contact lenses,
and varifocal spectacles. Binocular near visual acuity measured with
different optotypes (uppercase letters, lowercase letters, and words)
and reading metrics assessed with the Minnesota Near Reading chart
(reading acuity, critical print size [CPS], CPS reading speed) were
intercorrelated (Pearson product moment correlations) and assessed for
concordance (intraclass correlation coefficients [ICC]) and agreement
(Bland-Altman analysis) for indication of clinical usefulness.
RESULTS: Nineteen accommodating IOL cases, 40 simultaneous contact lens
cases, and 38 varifocal spectacle cases were evaluated. Other than CPS
reading speed, all near visual acuity and reading metrics correlated
well with each other (r>0.70, P<.001). Near visual acuity measured with
uppercase letters was highly concordant (ICC, 0.78) and in close
agreement with lowercase letters (+/- 0.17 logMAR). Near word acuity
agreed well with reading acuity (+/- 0.16 logMAR), which in turn agreed
well with near visual acuity measured with uppercase letters 0.16
logMAR). Concordance (ICC, 0.18 to 0.46) and agreement (+/- 0.24 to
0.30 logMAR) of CPS with the other near metrics was moderate.
CONCLUSION: Measurement of near visual ability in presbyopia should be
standardized to include assessment of near visual acuity with logMAR
uppercase-letter optotypes, smallest logMAR print size that maintains
maximum reading speed (CPS), and reading speed. J Cataract Refract Surg
2009; 35:1401-1409 (C) 2009 ASCRS and ESCRS
AB - PURPOSE: To provide a consistent standard for the evaluation of different types of presbyopic correction.
SETTING: Eye Clinic, School of Life and Health Sciences, Aston
University, Birmingham, United Kingdom.
METHODS: Presbyopic corrections examined were accommodating intraocular
lenses (IOLs), simultaneous multifocal and monovision contact lenses,
and varifocal spectacles. Binocular near visual acuity measured with
different optotypes (uppercase letters, lowercase letters, and words)
and reading metrics assessed with the Minnesota Near Reading chart
(reading acuity, critical print size [CPS], CPS reading speed) were
intercorrelated (Pearson product moment correlations) and assessed for
concordance (intraclass correlation coefficients [ICC]) and agreement
(Bland-Altman analysis) for indication of clinical usefulness.
RESULTS: Nineteen accommodating IOL cases, 40 simultaneous contact lens
cases, and 38 varifocal spectacle cases were evaluated. Other than CPS
reading speed, all near visual acuity and reading metrics correlated
well with each other (r>0.70, P<.001). Near visual acuity measured with
uppercase letters was highly concordant (ICC, 0.78) and in close
agreement with lowercase letters (+/- 0.17 logMAR). Near word acuity
agreed well with reading acuity (+/- 0.16 logMAR), which in turn agreed
well with near visual acuity measured with uppercase letters 0.16
logMAR). Concordance (ICC, 0.18 to 0.46) and agreement (+/- 0.24 to
0.30 logMAR) of CPS with the other near metrics was moderate.
CONCLUSION: Measurement of near visual ability in presbyopia should be
standardized to include assessment of near visual acuity with logMAR
uppercase-letter optotypes, smallest logMAR print size that maintains
maximum reading speed (CPS), and reading speed. J Cataract Refract Surg
2009; 35:1401-1409 (C) 2009 ASCRS and ESCRS
UR - http://www.scopus.com/inward/record.url?scp=67650935021&partnerID=8YFLogxK
U2 - 10.1016/j.jcrs.2009.03.026
DO - 10.1016/j.jcrs.2009.03.026
M3 - Article
SN - 1873-4502
VL - 35
SP - 1401
EP - 1409
JO - Journal of Cataract and Refractive Surgery
JF - Journal of Cataract and Refractive Surgery
IS - 8
T2 - 24th Congress of the European Society of Cataract and Refractive Surgeons
Y2 - 9 September 2006 through 13 September 2006
ER -