Related Experiment Video
Updated: Jun 19, 2025
05:10
Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System
Published on: March 17, 2023
2.7K
Contrast Sensitivity and Low Contrast Visual Acuity in Children With Normal Visual Acuity
Deiva Jayaraman1, Deepak Kumar Bagga1, Ananthapadmanabhan Ag1
1From the Institute for Vision Rehabilitation, L V Prasad Eye Institute (D.J., D.K.B., A.A., S.S.S.S., I.P.I., B.C.), Hyderabad, India.
American Journal of Ophthalmology
|July 26, 2024
Summary
This study establishes normative values for contrast sensitivity and low contrast visual acuity in children aged 5-15. These findings aid in understanding visual development and ocular conditions in pediatric populations.
Area of Science:
- Ophthalmology
- Pediatric Optometry
- Visual Science
Background:
- Contrast sensitivity (CS) and low contrast visual acuity (LCVA) are crucial for daily visual tasks.
- Establishing normative data in children is essential for identifying visual impairments.
Purpose of the Study:
- To measure and report distance and near CS and LCVA at 5% and 2.5% contrast in children aged 5-15 with normal visual acuity.
- To provide age-specific normative values for these visual functions.
Main Methods:
- Prospective, cross-sectional study conducted in Southern Indian schools.
- 1052 children (5-15 years) with normal visual acuity and stereo acuity were recruited.
- Pelli-Robson charts and LEA Symbols were used to assess CS and LCVA.
Main Results:
- Mean monocular distance CS was 1.75 logCS and near CS was 1.72 logCS.
- Mean LCVA at 5% contrast was 0.20 logMAR and at 2.5% contrast was 0.39 logMAR.
- CS and LCVA improved with age, plateauing in later childhood, with good repeatability.
Conclusions:
- The study provides essential age-specific normative data for CS and LCVA in children.
- These normative values are valuable for clinical assessments and understanding the impact of ocular conditions on pediatric vision.
