Harris W F, Malan D J
Department of Optometry, Rand Afrikaans University, Auckland Park, South Africa.
Ophthalmic Physiol Opt. 1992 Oct;12(4):478-80.
Recently developed methods of quantifying changing dioptric power are applied to the refractive status of Hong Kong Chinese infants from about 10 to about 40 weeks of age. The analysis confirms that hyperopia decreases during the period and that with-the-rule astigmatism predominates. Change, however, is not constant over the period. The rate of decrease of hyperopia slows down and the refractive status becomes more spherical. The mean refractive status is calculated at 10, 20, 30 and 40 weeks. The spread of refractive status is represented by variance-covariance matrices calculated for each group and 95% confidence ellipsoids on the mean are constructed. The variance-covariance exhibits little change over the period. The right and left eyes show similar behaviour.
最近开发的量化屈光力变化的方法被应用于约10至40周龄的香港华裔婴儿的屈光状态。分析证实，在此期间远视度数降低，且顺规散光占主导。然而，在此期间变化并非恒定不变。远视度数降低的速率减缓，屈光状态变得更加球形。分别计算了10周、20周、30周和40周时的平均屈光状态。屈光状态的离散程度由为每组计算的方差 - 协方差矩阵表示，并构建了均值的95%置信椭圆。在此期间方差 - 协方差变化不大。右眼和左眼表现出相似的行为。
