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Congenital and developmental cataract: axial length and keratometry study in Brazilian children / Catarata congênita e do desenvolvimento: estudo do comprimento axial e da ceratometria em crianças brasileiras
Prado, Rodrigo Bueno do; Silva, Virgílio Figueiredo; Schellini, Silvana Artioli; Rodrigues, Antonio Carlos Lottelli.
  • Prado, Rodrigo Bueno do; Universidade Estadual Paulista. Botucatu Medical School. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery. Botucatu. BR
  • Silva, Virgílio Figueiredo; Universidade Estadual Paulista. Botucatu Medical School. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery. Botucatu. BR
  • Schellini, Silvana Artioli; Universidade Estadual Paulista. Botucatu Medical School. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery. Botucatu. BR
  • Rodrigues, Antonio Carlos Lottelli; Universidade Estadual Paulista. Botucatu Medical School. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery. Botucatu. BR
Arq. bras. oftalmol ; 79(1): 19-23, Jan.-Feb. 2016. tab, graf
Article in English | LILACS | ID: lil-771898
ABSTRACT
ABSTRACT

Purpose:

To evaluate the ocular axial length (AL) and keratometry (K) in Brazilian children with congenital/developmental cataract, assess the differences and evolution of AL and K according to age, and establish functional models of AL and K as function of age.

Methods:

Children with congenital/developmental cataract aged 1.5 months old to 8 years old and no other ocular diseases were included. All eyes with unilateral cataract, the left eyes from children with bilateral cataracts, and healthy eyes from children with unilateral cataract were analyzed. After the administration of anesthesia, K was measured with a portable automatic keratometer, and AL was measured with a contact biometer. Cataract surgery was performed immediately after the measurements were taken. The data were statistically analyzed, and a linear regression with an age logarithm was used to model the relationship.

Results:

Forty-four eyes with cataract were included in this analysis, comprising 15 eyes with unilateral cataract and 29 left eyes from children with bilateral cataracts. The mean age was 27.3 months with a mean AL of 20.63 ± 2.11 mm and a mean K of 44.94 ± 2.44 D. The K value was significantly steeper and the AL value was significantly shorter in younger children (P< 0.001). No significant differences were found neither between eyes with unilateral and bilateral cataracts nor between eyes with unilateral cataract and their corresponding healthy eyes (P >0.05).

Conclusion:

The values of K and AL significantly change with age, especially during the first 6 months of life. A linear functional relationship between K and AL with the logarithm of age and between K and AL was established.
RESUMO
RESUMO

Objetivo:

Avaliar o comprimento axial (AL) e a ceratometria (K) de olhos de crianças brasileiras com catarata congênita/desenvolvimento, analisar diferenças e evoluções de acordo com a idade e estabelecer modelos funcionais de comprimento axial e ceratometria em função da idade e entre eles.

Métodos:

Crianças com catarata congênita/desenvolvimento com idade de 1,5 meses a 8 anos de idade e sem outras doenças oculares foram incluídas. Todos os olhos com catarata unilateral, o olho esquerdo de crianças com catarata bilateral e o olho sadio de crianças com catarata unilateral foram analisados. Após a administração de anestesia, a ceratometria foi obtida com um ceratômetro automático portátil e o comprimento axial medido com um biômetro de contato. Em seguida, a cirurgia de catarata foi realizada. Os dados foram analisados estatisticamente, a regressão linear com o logaritmo da idade foi utilizado para modelar os relacionamentos.

Resultados:

Todos os olhos com catarata unilateral (n=15) e um olho selecionados aleatoriamente a partir dos casos bilaterais (n=29) foram incluídos na análise (total= 44 olhos). A idade média foi de 27,3 meses, as médias do comprimento axial e da ceratometria foram respectivamente 20,63 ± 2,11 mm e 44,94 ± 2,44 dioptrias. A ceratometria foi significativamente mais curvo e comprimento axial significantemente mais curto em crianças mais jovens (P<0,001). Não foram encontradas diferenças significativas na comparação entre os olhos com cataratas unilaterais e bilaterais e comparando os olhos com catarata unilateral a correspondentes olhos saudáveis (P>0,05).

Conclusão:

Os valores de ceratometria e comprimento axial mudam significativamente com a idade, principalmente nos primeiros seis meses de vida. Foi estabelecida uma relação funcional linear entre comprimento axial e ceratometria com o logaritmo da idade e entre ceratometria e comprimento axial.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Cataract / Cornea / Axial Length, Eye Type of study: Observational study / Prognostic study Limits: Child / Child, preschool / Female / Humans / Infant / Male Country/Region as subject: South America / Brazil Language: English Journal: Arq. bras. oftalmol Journal subject: Ophthalmology Year: 2016 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual Paulista/BR

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Full text: Available Index: LILACS (Americas) Main subject: Cataract / Cornea / Axial Length, Eye Type of study: Observational study / Prognostic study Limits: Child / Child, preschool / Female / Humans / Infant / Male Country/Region as subject: South America / Brazil Language: English Journal: Arq. bras. oftalmol Journal subject: Ophthalmology Year: 2016 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual Paulista/BR