Corneal Biomechanics, Retinal Nerve Fiber Layer, and Optic Disc in Children

Purpose: To evaluate the possible associations between corneal biomechanical parameters, optic disc morphology, and retinal nerve fiber layer (RNFL) thickness in healthy white Spanish children. Methods: This cross-sectional study included 100 myopic children and 99 emmetropic children as a control group, ranging in age from 6 to 17 years. The Ocular Response Analyzer was used to measure corneal hysteresis (CH) and corneal resistance factor. The optic disc morphology and RNFL thickness were assessed using posterior segment optical coherence tomography (Cirrus HD-OCT). The axial length was measured using an IOLMaster, whereas the central corneal thickness was measured by anterior segment optical coherence tomography (Visante OCT). Results: The mean (±SD) age and spherical equivalent were 12.11 (±2.76) years and −3.32 (±2.32) diopters for the myopic group and 11.88 (±2.97) years and +0.34 (±0.41) diopters for the emmetropic group. In a multivariable mixed-model analysis in myopic children, the average RNFL thickness and rim area correlated positively with CH (p = 0.007 and p = 0.001, respectively), whereas the average cup-to-disc area ratio correlated negatively with CH (p = 0.01). We did not observe correlation between RNFL thickness and axial length (p = 0.05). Corneal resistance factor was only positively correlated with the rim area (p = 0.001). The central corneal thickness did not correlate with the optic nerve parameters or with RNFL thickness. These associations were not found in the emmetropic group (p > 0.05 for all). Conclusions: The corneal biomechanics characterized with the Ocular Response Analyzer system are correlated with the optic disc profile and RNFL thickness in myopic children. Low CH values may indicate a reduction in the viscous dampening properties of the cornea and the sclera, especially in myopic children.

Report from Office for Spanish Speaking American Affairs.

Mode of access: Internet.

Special education and the Hispanic child : proceedings from the second annual Colloquium on Hispanic Issues /

"August 1981."

School-linked comprehensive services for children and families : what we know and what we need to know /

Based on the fall 1994 "Working Conference on School-linked Comprehensive Services for Children and Families: What We Know and What We Need to Know" held near Dulles Airport, outside of Washington, D.C.

Children's Mission cook book.

Some recipes include wine or liquor as an ingredient; includes recipes for French, Italian, Spanish, Swedish, and Mexican dishes. Sample recipes: Roman Catholic pie, Canned peach souffle, Ring tum diddy, Kentucky punch.

In support of children [microform] : many successes but much to be done : hearing before the Select Committee on Hunger, House of Representatives, One Hundredth Congress, second session, hearing held in Washington, DC, March 23, 1988.

"Serial no. 100-23."

Managers and missionaries : library services to children and young adults in the information age /

"Papers presented at the Allerton Park Institute, sponsored by University of Illinois, Graduate School of Library and Information Science, cosponsored by the Youth Divisions of the American Library Association: American Association of School Librarians (AASL), Association for Library Service to Children (ALSC), Young Adult Services Division (YASD); held November 14-16, 1986, Chancellor Hotel & Conference Center ... Champaign, Illinois."

Transitions to kindergarten in American schools /

"Contract no. LC88089001."

Index to map of Hispanic America; 1:1,000,000 ...

At head of title: American Geographical Society.

Subject and title index to short stories for children / compiled by a subcommittee, Julia F. Carter, chairman.

Mode of access: Internet.

The American child.

Supplements accompany some issues.

Trends in nutrient intakes and chronic health conditions among Mexican-American adults : a 25-year profile : United States, 1982-2006 /

Mode of access: Internet.

Children's books from twelve countries,

Mode of access: Internet.

Children's poetry index,

"Key to symbols" in pocket.

Index to children's plays,

Books about plays and play production, puppets, costuming, folk dances and singing games: p. 1-9.