External Validation of a Model to Predict Postoperative Globe Axial Length in Children After Bilateral Cataract Surgery.
Am J Ophthalmol
; 264: 162-167, 2024 Aug.
Article
in En
| MEDLINE
| ID: mdl-38521155
ABSTRACT
PURPOSE:
To perform the external validation of a model to predict postoperative axial length (AL) in children over 2 years of age who were undergoing bilateral cataract surgery with primary intraocular lens (IOL) implantation.DESIGN:
Validation study using a retrospective case series.METHODS:
Using a population different from the one that created the model, but with the same characteristics regarding age, bilateral cataract, primary IOL implantation, and follow-up assessment, AL was estimated. The AL values estimated by the model were compared with the AL measured in the follow-ups.RESULTS:
In all, 55 eyes of 30 children were selected for this study; in 5 children with bilateral cataracts, only 1 eye was included. The median age at the time of surgery was 5.01 years. Follow-up AL measurements were obtained for 179 visits. The median age at the final follow-up visit was 10.15 years. The median AL measured and estimated by the model in all visits were 22.37 mm and 22.16 mm, respectively (Pearson coefficient 0.9534; Lin correlation 0.9258). In the Bland-Altman analysis, the 95% limit of agreement between the 2 methods (measured and estimated AL) was 0.71 to -1.19. In 3 eyes (1.68%) with AL shorter than 21.2 mm, the difference was >0.71, and in 9 eyes with AL longer than 22.5 (5.03%), it was less than -1.19. The median AL measured and estimated at the final visit were 22.69 mm and 22.43 mm, respectively.CONCLUSION:
Our previously developed prediction model for globe AL growth demonstrated good external validity by accurately predicting measured AL changes with growth in the validation cohort.
Full text:
1
Database:
MEDLINE
Main subject:
Cataract Extraction
/
Lens Implantation, Intraocular
/
Axial Length, Eye
Limits:
Adolescent
/
Child
/
Child, preschool
/
Female
/
Humans
/
Male
Language:
En
Journal:
Am J Ophthalmol
Year:
2024
Type:
Article
Affiliation country:
United States