Subnormal visual perception in school-aged ex-preterm patients in a paediatric eye clinic

Al, Hård; Aring, Eva; Hellström, Ann

doi:10.1038/sj.eye.6700740

Cited by 16 publications

(24 citation statements)

References 32 publications

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“…Fifteen studies were finally included. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Table I summarizes the main characteristics, outcomes, and quality assessment of each study according to each neuropsychological test. Seven were conducted in Europe and nine had been published after 2000.…”

Section: Resultsmentioning

confidence: 99%

Visual–perceptual impairment in children with cerebral palsy: a systematic review

Ego

Lidzba

Brovedani

et al. 2015

Develop Med Child Neuro

119

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Aim Visual perception is one of the cognitive functions often impaired in children with cerebral palsy (CP). The aim of this systematic literature review was to assess the frequency of visual–perceptual impairment (VPI) and its relationship with patient characteristics. Method Eligible studies were relevant papers assessing visual perception with five common standardized assessment instruments in children with CP published from January 1990 to August 2011. Results Of the 84 studies selected, 15 were retained. In children with CP, the proportion of VPI ranged from 40% to 50% and the mean visual perception quotient from 70 to 90. None of the studies reported a significant influence of CP subtype, IQ level, side of motor impairment, neuro‐ophthalmological outcomes, or seizures. The severity of neuroradiological lesions seemed associated with VPI. The influence of prematurity was controversial, but a lower gestational age was more often associated with lower visual motor skills than with decreased visual–perceptual abilities. Interpretation The impairment of visual perception in children with CP should be considered a core disorder within the CP syndrome. Further research, including a more systematic approach to neuropsychological testing, is needed to explore the specific impact of CP subgroups and of neuroradiological features on visual–perceptual development.

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Section: Resultsmentioning

confidence: 99%

Visual–perceptual impairment in children with cerebral palsy: a systematic review

Ego

Lidzba

Brovedani

et al. 2015

Develop Med Child Neuro

119

View full text Add to dashboard Cite

show abstract

“…52,53 Interpreting reported data to guide clinical management and assessment of visual function in preterm children is hampered by variability in methods and findings, as discussed previously. 19,46,[54][55][56][57] Furthermore, there is a paucity of research that has thoroughly examined visual perceptual outcomes in highrisk ELBW/EP children beyond school age, although difficulties have been noted in judgment of line orientation, 58 perceptual matching, 41 and biological motion processing. 59 The current study was a unique opportunity to report on a contemporary and representative cohort on long-term visual outcomes in preterm adolescents.…”

Section: Visual Perceptionmentioning

confidence: 99%

Visual Processing in Adolescents Born Extremely Low Birth Weight and/or Extremely Preterm

et al. 2013

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BACKGROUND AND OBJECTIVES Ocular growth and development differs between preterm and term-born infants and may cause long-term negative consequences for visual function, but contemporary data on long-term visual outcomes in representative samples of the highest risk extremely low birth weight (ELBW, <1000 g birth weight) or extremely preterm (EP, <28 weeks’ gestation) survivors are lacking. Our objective was to compare visual functioning between ELBW/EP and normal birth weight (NBW, >2499 g birth weight) control adolescents. METHODS: Geographically determined cohort study of 228 consecutive ELBW/EP survivors born in the state of Victoria in 1991 and 1992, and 166 randomly selected NBW controls assessed between 14 and 20 years of age. Visual acuity, stereopsis, convergence, color perception, and visual perception were assessed and contrasted between groups. RESULTS: ELBW/EP subjects had significantly worse visual acuity with habitual correction in both the left and right eyes, and for the best eye (P < .001). The ELBW/EP adolescents also exhibited poorer stereopsis, odds ratio (OR) 3.22 (95% confidence interval [CI] 1.78 to 5.84), and convergence, OR 2.76 (CI 1.32 to 5.75) than controls, and more problems with visual perception, OR 3.09 (CI 1.67 to 5.71) after habitual correction. CONCLUSIONS: Despite advances in medical care improving the survival rate of high-risk ELBW/EP infants, visual morbidity is still relatively high compared with controls in late adolescence.

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“…The most commonly reported visual–spatial processing difficulties amongst preterm children include problems with the perception of motion, depth, and simultaneous perception, as well as the ability to survey a complex scene . Problems with global and local processing are also common .…”

mentioning

confidence: 99%

Compromised approximate number system acuity in extremely preterm school‐aged children

Hellgren

Halberda

Forsman

et al. 2013

Develop Med Child Neuro

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Aim The aim of this study was to compare the approximate number system acuity in children born extremely preterm aged 6 years 6 months and typically developing, age‐matched peers. Method This population‐based follow‐up study included 65 children born before 27 gestational weeks (35 males, 30 females; mean gestational age 25.4wks [SD 1.1wk]; mean birthweight 789g [SD 158g]) and 47 typically developing children (24 females, 23 males) at the age of 6 years 6 months. A battery of cognitive tests was administered, including a computerized test for measuring approximate number system acuity and tests for general cognition, working memory, processing speed, and visual attention. Approximate number system outcome measures were means of Weber fraction (w) values and response time in milliseconds. Results The 43 extremely preterm children in whom usable data were obtained performed significantly worse than the typically developing children on the approximate number system task (w=0.30 [SD 0.23] vs. 0.17 [SD 0.13]; p=0.003) and were significantly slower (response time=2934ms [SD 1102ms] vs 2376ms [SD 310ms]; p=0.002). The differences remained when adjusting for differences in other cognitive functions (p=0.03). Interpretation Preterm birth has a negative impact on an individual's ability to rapidly approximate and compare numbers of visually presented items. This deficiency is thought to be a consequence of dorsal stream dysfunction. Future studies will investigate whether this deficiency is correlated with lower mathematical proficiency in this group of children.

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Subnormal visual perception in school-aged ex-preterm patients in a paediatric eye clinic

Cited by 16 publications

References 32 publications

Visual–perceptual impairment in children with cerebral palsy: a systematic review

Visual–perceptual impairment in children with cerebral palsy: a systematic review

Visual Processing in Adolescents Born Extremely Low Birth Weight and/or Extremely Preterm

Compromised approximate number system acuity in extremely preterm school‐aged children

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