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Measurement of low vision in advanced cicatricial retinopathy of prematurity
1Michigan State University, GRAMAC, Grand Rapids, USA.
Insights
This study compared vision assessment tools for children with severe retinopathy of prematurity (CROP). The visual function battery (VFB) showed better results than Teller acuity cards for assessing functional vision in these visually impaired children.
Area of Science:
- Ophthalmology
- Pediatric Vision Science
Background:
- Cicatricial retinopathy of prematurity (CROP) stages IV and V can lead to significant visual impairment in children.
- Accurate assessment of functional vision is crucial for intervention and management in visually impaired pediatric populations.
Purpose of the Study:
- To compare the efficacy of Teller acuity cards and the visual function battery (VFB) in evaluating functional vision in children with advanced CROP.
- To determine which assessment tool is more reliable for measuring visual function in the very low acuity range.
Main Methods:
- Functional vision was assessed in 26 eyes of 15 children (ages 6 months to 14 years) with stage IV-V CROP who had undergone retinal reattachment surgery.
- Two assessment methods were used: Teller acuity cards and a battery of behavioral tasks, the visual function battery (VFB).
Main Results:
- Only 38% of eyes had recordable grating acuity with Teller acuity cards.
- The VFB detected responses in 96% of eyes.
- 62% of eyes showed recordable VFB scores but no corresponding Teller acuity card scores, indicating VFB's sensitivity in detecting vision.
Conclusions:
- The visual function battery (VFB) appears to be a more sensitive and reliable tool than Teller acuity cards for assessing functional vision in children with very low visual acuity secondary to advanced CROP.
- Behavioral assessment tasks may offer a more comprehensive evaluation of functional vision in this specific pediatric population.
Abstract:
This study evaluates functional vision in visually impaired children with stage IV to V cicatricial retinopathy of prematurity (CROP) by comparing results derived from the Teller acuity cards and a battery of behavioral tasks, the visual function battery (VFB). Vision was evaluated in 26 eyes of 15 children ages 6 months to 14 years, who underwent retinal reattachment procedures for active stage IV and stage V retinopathy of prematurity. Results showed that 10 of 26 eyes (38%) had a recordable grating acuity to Teller acuity card assessment. Twenty-five of 26 eyes (96%) showed a response to the VFB. Sixteen of 26 eyes (62%) showed recordable scores with the VFB but no corresponding scores with the Teller acuity cards. The VFB may be more reliable than the Teller acuity cards in measuring visual function in the very low acuity range.