Optimal Dataset Sizes for Constant Optimization in Published Theoretical Optical Formulae.
Curr Eye Res
; 46(10): 1589-1596, 2021 10.
Article
in En
| MEDLINE
| ID: mdl-33667143
ABSTRACT
Purpose:
To determine the optimal number of data points required for optimization of formulae for classical lens power calculation.Methods:
A large dataset of preoperative biometric values was used to assess the convergence of formula constants in a number of established intraocular lens power calculation formulae.Results:
In formulae with a single constant, 80-100 clinical data points are sufficient to obtain convergence. The Haigis formula (three constants) requires 200-300 data points although refractive error converges more rapidly.Conclusions:
In all formulae, 80-100 clinical data points are sufficient to achieve a stable mean refractive error.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Optics and Photonics
/
Datasets as Topic
/
Lenses, Intraocular
Type of study:
Observational_studies
Limits:
Humans
Language:
En
Journal:
Curr Eye Res
Year:
2021
Document type:
Article
Affiliation country:
Alemania