Abstract:
BACKGROUND:To determine the accuracy of the T2 formula as applied to highly myopic eyes, to compare the T2 formula to the SRK/T and Holladay 1 formulas, and to describe possible ways to improve the estimation of corneal height and prediction error in two settings, the Hadassah Hospital, Ophthalmology Department, Jerusalem, Israel and Clínica Barraquer, Bogotá, Colombia. METHODS:In this retrospective case series, optical biometer measurements were taken for 63 highly myopic patients (> 25 mm) undergoing uneventful crystalline lens phacoemulsification and insertion of an acrylic intraocular lens. Prediction errors were obtained, with estimations of ±0.50 D, ± 1.00 D, and greater than ±2.00 D. A method to improve the corneal height calculation is described. RESULTS:The SRK/T formula (mean absolute error [MAE] = 0.418; median absolute error [MedAE] = 0.352) was the most accurate, followed by the T2 (MAE = 0.435; MedAE = 0.381) and Holladay 1 (MAE = 0.455; MedAE = 0.389) formulas. Both the SRK/T and T2 formulas overestimated corneal height, but values were higher with the T2 formula. Corneal height was more precisely estimated using an alternative method that, when combined with axial length optimization, resulted in lower MAE (0.425) and MedAE (0.365) values than when applying the T2 formula alone. CONCLUSIONS:The T2 formula seems to be less accurate than the SRK/T formula in highly myopic eyes. An improved corneal height estimation method is described for the the T2 formula.
journal_name
BMC Ophthalmoljournal_title
BMC ophthalmologyauthors
Idrobo-Robalino CA,Santaella G,Gutiérrez ÁMdoi
10.1186/s12886-019-1226-7subject
Has Abstractpub_date
2019-11-12 00:00:00pages
222issue
1issn
1471-2415pii
10.1186/s12886-019-1226-7journal_volume
19pub_type
杂志文章abstract::Mucins locate to the apical surfaces of all wet-surfaced epithelia including ocular surface. The functions of the mucins include anti-adhesive, lubrication, water retention, allergens and pathogen barrier function. Ocular surface pathologies, i.e. dry eye syndrome or allergic conjunctivitis, are reportedly associated ...
journal_title:BMC ophthalmology
pub_type: 杂志文章,评审
doi:10.1186/s12886-015-0137-5
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journal_title:BMC ophthalmology
pub_type: 杂志文章,meta分析
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journal_title:BMC ophthalmology
pub_type: 杂志文章
doi:10.1186/1471-2415-7-14
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journal_title:BMC ophthalmology
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2017-07-04 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2014-05-01 00:00:00
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更新日期:2016-07-08 00:00:00
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更新日期:2020-06-19 00:00:00
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pub_type: 社论,评审
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更新日期:2006-06-15 00:00:00
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更新日期:2016-07-22 00:00:00
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pub_type: 杂志文章
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更新日期:2012-06-22 00:00:00
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pub_type: 杂志文章
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更新日期:2015-08-26 00:00:00
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pub_type: 杂志文章
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更新日期:2018-01-16 00:00:00
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