Related Experiment Video
Updated: Mar 12, 2026
Comparison of Three Clinical Stereoscopic Methods for Measuring Binocular Visual Function During Amblyopic Treatment in Unilateral Amblyopia
Published on: September 27, 2024
Benchmarks for outcome indicators in pediatric cataract surgery
B R Nihalani1, D K VanderVeen1
1Department of Ophthalmology, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA.
Insights
This study establishes benchmarks for pediatric cataract surgery quality. High visual acuity (20/40 or better) is achievable, but refractive prediction error is greater in children than adults.
Area of Science:
- Ophthalmology
- Pediatric Surgery
- Refractive Error
Background:
- Pediatric cataract surgery quality assessment requires established benchmarks.
- Intraocular lens (IOL) implantation is standard in pediatric cataract surgery.
Purpose of the Study:
- To establish benchmarks for outcome indicators in pediatric cataract surgery with primary IOL implantation.
- To assess quality of care for children undergoing cataract surgery.
Main Methods:
- Retrospective chart review of patients over 2 years old undergoing cataract surgery with primary IOL implantation.
- Exclusion of patients with ocular comorbidities affecting outcomes.
- Analysis of final best-corrected visual acuity (BCVA) and prediction error (PE) at 1 month postoperatively.
Main Results:
- 96% of eyes achieved a BCVA of 20/40 or better.
- Mean prediction error was 0.3±1.1 D, with mean absolute PE of 0.9±0.7 D.
- 95% of eyes had a prediction error within ±2.0 D.
Conclusions:
- High visual acuity benchmarks, similar to adults, should be expected post-pediatric cataract surgery.
- Pediatric eyes exhibit greater prediction error than adult eyes, necessitating lower benchmarks.
- This study provides essential benchmarks for pediatric cataract surgery outcomes.
Abstract:
PurposeThe purpose of this study was to establish benchmarks for outcome indicators that may help ascertain the quality of pediatric cataract surgery with primary intraocular lens (IOL) implantation.Patients and methodsA retrospective chart review of patients older than 2 years undergoing cataract surgery with primary IOL implantation, by multiple surgeons in a tertiary-care center, from November 2005 to February 2016 was conducted. Patients with ocular comorbidities that would affect the outcomes were excluded. The outcome measures chosen were as follows: (1) final best corrected Snellen visual acuity (BCVA) in patients who had bilateral cataract surgery analyzed at the last clinic visit; (2) prediction error (PE)=expected refraction-actual refraction. Mean PE and mean absolute PE were assessed 1 month postoperatively, irrespective of age or laterality.ResultsMean age at surgery was 8.3±4.6 years and mean follow-up duration was 3.7±2.7 years. The results of outcome measures were as follows: (1) BCVA was 20/40 or better in 96% (n=124 eyes, mean patient age: 8.3±4.6 years). Remaining five eyes had amblyopia with two eyes having BCVA worse than 20/100 that did not respond to amblyopia treatment. (2) Mean PE was 0.3±1.1 D and mean absolute PE was 0.9±0.7 D. PE was within ±0.5 D in 43.0%, ±1.0 D in 66%, and ±2.0 D in 95% (n=235 eyes).ConclusionGood visual acuity after cataract surgery should be expected for children with bilateral cataracts, setting a high benchmark similar to that recommended in adult cataract surgery. Prediction error is greater in pediatric eyes than in adult eyes, setting a lower benchmark. This study establishes benchmark for outcome indicators in pediatric patients older than 2 years undergoing cataract surgery with primary IOL implantation.
