视力

To see a speckled sheep so hurts my eyes,I find the sight is simply undermined.

一看到杂色羊，我眼睛就不舒服，我发现他们严重有损我的视力。

This phenomenon falls under the category of "spherical aberration"-- just one of several examples of how the human eye is optically imperfect.

这种现象应该归入球面像差的范畴内，这是人眼为何出现视力缺陷的几个实例之一。

Methods LASEK was performed on 40 eyes of 22 patients with extremely high myopia. Mean preoperative uncorrected visual acuity was 0.02±0.02(range 0.01-0.05) and the mean spherical equivalent was -12.75±2.30 D.

应用德国Zeiss MEL 80准分子激光器对－10.00以上的超高度近视22例（40眼）施行LASEK术，术前平均裸眼视力0.02±0.02 (0.01~0.05)，平均等效球镜(-12.75±2.30)D。

Purpose: To determine the dynamic visual acuity and stereopsis during Corionlis illusion.

目的：探讨动态环境所诱发的科氏错觉下，人类视力与立体感的变化情形。

They have excellent stereoscopic vision, they can see in color and in the dark.

它们具有出色的立体视力，善辨颜色，在黑暗中也能看清楚。

My eyes were, and are constantly dry and I have difficulty focusing. Optometrists noted a stigmatism but glasses did not remedy my vision.

我的眼睛经常发干，聚焦困难，眼科医生说我散光，但是眼镜没能矫正我的视力。

VEP ; optimal stimulus ; threshold stimulus ; visual acuity

视觉诱发电位；最佳刺激；阈刺激；视力

Kevin Power took a photograph of it, and then the object streaked away and was lost to sight in 3 seconds.

凯文国采取的照片，然后条以外的对象，并失去视力在三秒。

Power small electronic ballasts, high power, no stroboscopic, no noise, no radiation, reliability, and can be very good to protect their eyesight.

电子镇流器功耗小、功率高、无频闪、无噪音、无辐射、可靠性强，能很好保护视力。

To Dec. in 2004. Of all examined students,20 433 catched with poor eyesight, the incidence was 30.48%;11 887 with decayed teeth （17.33%）, 14 715 with physiology goiter struma （21.95%）, 1 811 with color weakness （2.70%）, and 488 with amygdalae inflammation （0.73%）.

结果调查学生67036人，视力不良20433人，患病率30、48％；龋齿患病人数11887人，龋患率17.73％；生理性甲状腺肿大14715人，肿大率21.95％；色弱1811人，患病率2.70％；扁桃体炎488人，患病率0.73％。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。