Standardizing sum-of-segments axial length using refractive index models.
Biomed Opt Express
; 11(10): 5860-5870, 2020 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-33149991
ABSTRACT
Optical biometry uses interferometry to measure the axial length (AL) of the eye. Traditionally, one-variable regression formulas have converted the optical path length measured by a biometer to a geometric AL. An alternate calculation of axial length sums the individual segments of the eye (sum-of-segments AL). This calculation has been shown to improve predictions of some intraocular lens power formulas when used in place of traditional axial length. Sum-of-segments ALs are determined from 13 refractive index models. As measured in 1695 eyes, these yield different ocular axial lengths. A path to standardization from these models is presented.
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MEDLINE
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En
Ano de publicação:
2020
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Article