OPHTHALMIC CHANGES FROM AGE OF 10 to 18 YEARS

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Abstract
Re-examination of corrected visual acuity was done in 137 18 yr old Danes, who were originally examined at the age of 10 yr, as part of a study of sequels to low birth weight (LBW). Median values indicate that most adolescents are able visually to discriminate considerably above the customary 6/6 limit. As compared with LBW (n = 70), full-terms (FT) (n = 67) show a significantly higher cumulated visual acuity score. Binocular median visual acuities are 1.2 (LBW) and 1.4 (in FT). The difference is neither explained by the ex-prematures'' higher frequency of heterotropia, nor by their (minor) share of eyes with subnormal vision. The latter occurred especially in the subgroup of myopia of prematurity. The exceptional cases with RLF-blindness were discarded from follow-up. Concerning visual acuity, the previously reported lagging behind of ex-prematures in childhood has proven to be not only a temporary delay but a permanent (adult) feature.

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