Delayed Visual Maturation

Illingworth, R. S.

doi:10.1136/adc.36.188.407

Cited by 50 publications

(10 citation statements)

References 4 publications

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“…Children in the 0–2 age group are also known to present great assessment problems. A significant number can show improvement in visual status with time (Illingworth 1961; Rosenbloom 1979). Different professional groups use the terminology associated with VI in different ways, thus making it difficult to compare and contrast data in the literature.…”

Section: Introductionmentioning

confidence: 99%

Visual impairment in childhood: insights from a community‐based survey

Flanagan

Jackson

Hill

2003

Child

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Section: Introductionmentioning

confidence: 99%

Visual impairment in childhood: insights from a community‐based survey

Flanagan

Jackson

Hill

2003

Child

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“…Illingworth in 1961 first introduced the term "delayed visual maturation" to describe it. 3 He described two children who had been visually unresponsive as infants but who, at 6 months of age, begin to be attentive to visual stimuli. It is noteworthy that one child was considerably late in walking.…”

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confidence: 99%

Delayed visual maturation: the apparently blind infant

Hoyt¹

2004

Journal of American Association for Pediatric Ophthalmology and

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“…The phenomena of dissociated visual development adds a further complicating dimension to the diagnostic difficulties presented by the visually unresponsive infant. It is well known that mentally retarded infants with normal eyes often show delayed visual awareness, and this sometimes appears to be out of proportion to their development in other areas (Illingworth 1972). Delayed visual maturation occurring in otherwise normal infants has been well documented only by Illingworth (1961), although it had been alluded to previously by Doyne (1930) and Doggart (1957) and subsequently has been mentioned by Dudgeon (1977).…”

Section: David H Mellor Alistair R Fieldermentioning

confidence: 97%

Dissociated Visual Development: Electrodiagnostic Studies in Infants Who Are ‘Slow to See’

Mellor

Fielder

1980

Develop Med Child Neuro

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SUMMARY Four infants were studied who failed to show any visual interest or following responses in the first three months of life. Although no definite ocular abnormalities were found at the time of presentation, both the parents and their medical advisers initially had serious concerns about the infants' visual prognosis. Initial electroretinograms (ERG) were found to be unequivocally normal, but three of the infants showed absent or impaired cortical visual evoked responses (VER). The fourth infant had an initial VER which was immature. Subsequently, all the infants showed increasing visual responsiveness from three to four months of age and all now have visual behaviour and general development appropriate to their ages. The VERS were repeated after four months of age and all showed normal responses. It is concluded that poor or even absent VER responses in early infancy may not always indicate a poor prognosis for vision. The possible mechanisms of this visual maturational lag are discussed. RESUME Développement visuel dissocié: études électrodiagnostiques chez les nourrissons lents à voir Quatre nourrissons incapables de montrer un intérêt visuel ou de présenter des réponses de poursuite durant les trois premiers mois de la vie ont étéétudiés. Bien qu'aucune anomalie oculaire n'ait été trouvee au moment de la consultation, les parents, tout comme leurs conseillers medicaux, ont été initialement tres inquiets quant au pronostic de vision des nourrissons. Les premiers electroretinogrammes etaient indiscutablement normaux mais trois des nourrissons presentaient des reponses corticales visuelles absentes ou alterees. Chez le quatrieme nourrisson, la premiere reponse visuelle evoquee etait de type immature. Par la suite, tous les nourrissons ont presente un progres dans les reponses visuelles a partir de trois ou quatre mois d'age; actuellement tous les quatre ont un comportement visuel et un developpement general approprie pour leur age. Les reponses evoquees visuelles recherchees ulterieurement etaient normales. On peut conclure qu'une reponse visuelle evoquee pauvre ou meme absente, dans la premiere enfance, peut ne pas toujours indiquer un mauvais pronostic de vision. Les mecanismes possibles de ce delai de maturation visuelle sont discutes. ZUSAMMENFASSUNG Dissoziierte Entwicklung des Sehvermögens: Elektrodiagnostische Untersuchungen bei Säuglingen mil verzogerter Entwicklung des Sehvermogens Vier Kinder wurden untersucht, die in den ersten drei Lebensmonaten kein visuelles Interesse oder entsprechende Reaktionen gezeigt hatten. Obwohl zum Zeitpunkt der Untersuchung keine defmierten Storungen am Auge nachweisbar waren, hatten sowohl die Eltern als auch ihre medizinischen Berater anfanglich ernste Bedenken ob sich das Sehvermogen bei diesen Kindern normal entwickeln wiirde. Die ersten abgeleiteten Elektroretinogramme waren eindeutig normal, jedoch zeigten drei der Kinder keine oder nur geringe corticale visuelle Reaktionen. Die beim vierten Kind visuell evozierten Potentiale waren anfanglich nicht altersentspr...

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Delayed Visual Maturation

Cited by 50 publications

References 4 publications

Visual impairment in childhood: insights from a community‐based survey

Visual impairment in childhood: insights from a community‐based survey

Delayed visual maturation: the apparently blind infant

Dissociated Visual Development: Electrodiagnostic Studies in Infants Who Are ‘Slow to See’

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