弱视的成因

弱视是视觉连接大脑的通路出现异常所引致的结果。
造成弱视的原因包括两只眼球无法一起合作(眼肌使用不平衡),或两只眼睛的度数差别太大。
此外, 剥夺性弱视是由白内障引起的,即一只或两只眼睛看得不清楚,导致个人患有剥夺性弱视。

Eyes Turn Lazy

Lazy eyes can happen to both adults and children. We have seen lazy eyes in adults caused by accidents such as car accidents, stroke and concussions.

孩童的弱视则是因为 视觉 发展不完全。

有弱视的名人
(i) Melissa Joan Hart
(ii) Paris Hilton
(iii) Ryan Gosling
(iv) Heidi Klum
(v) Kate Moss

弱视有几种治疗方式。

(i) 使用眼罩
利用眼罩盖上健眼,被迫地使用弱眼。时间为一天几个小时,如此持续几个月。

优点
简单又划算

缺点
Time-consuming due to the brain is accustomed to using a better eye when the patch is removed from the weaker eye, the brain will revert back to use the better eye.
Unpleasant experience, making the vision worse by taking the good eye away from the patient.

(ii) 眼药水
Atropine eye drops can be used to temporarily make it difficult for the “good” eye to see properly. This drug dilates the pupil and numbs the muscles of the good eye making the lens unable to focus for a few hours, so the weaker eye is forced to work.

优点:患者或父母无需一直保持警惕

缺点
可引致眼痒、眼睛泛红、头痛

(iii) 视觉神经治疗
Teach patients to use both eyes together correctly which gets rid of the lazy eye.

优点
有效、无需动手术

缺点
需要很多的练习、
治疗师和患者之间需要良好合作

lazy eye

Eye patching is recommended with a vision therapy program, placing the eye patch on the good eye. It can force the lazy eye to work and develop a better connection to the brain.

The doctor will tell patients how long they should keep the eye patch on, depends on their severity and type of lazy eye. Doctor probably suggest that patients wear the eye patch 2 to 6 hours a day.

这手术是通过加强或弱化眼肌来改善斜视,即两只眼睛视线对齐。然而,弱视无法透过手术来矫正,但眼睛会变得比较能够直视前方,双眼也比较能够一起合作。为了改善斜视,或许要进行不同的手术,不只是一个,且术后仍可能要戴眼镜。

The children will wear a special glass when playing the game to affect how the game looks to each eye. Usually, reduced contrast can be seen by better eyes while the high contrast can be seen by the weaker eyes. Both eyes can see the background in high contrast. Research showed that the children in the iPad group played the game for an hour a day, five days a week, for two weeks. The children were able to read an average of 1.5 more line on a letter chart as compared to the before treatment. Those in the eye patch group wore an eye patch for 2 hours a day, seven days a week, and for two weeks. They could read 0.7 more lines on the letter chart as compared to the before treatment.

然而,在长期玩了平板游戏后,这些研究无法证明孩童的视觉是否有改善。更多的研究支持是必要的。

Yes. Lazy eyes can be inherited from family history. Hence, it is better to check with an eye doctor from a child’s birth until they are adults to ensure the brain and eyes can form the connections. These connections can be delayed when the vision in one or both eyes are blocked. As the result, the vision from one eye being dimmer than another eye. Eventually, the brain learns to ignore the dim image and the eye is getting lazy.

是,这是有可能的。

This is because they have a less detailed 3D version of the world. Hence, they might have an easier time translating what they see onto the 2D page – whether it was for a painting of a diner scene, sketch for mobile, or plan for a building.

People who have focusing trouble and difficulty see 3D movies and art. About 3% of people with misaligned eyes can be diagnosed by looking at photographs of a person. Line drawing is a backdoor to the brain to learn how the brain makes sense of the 视觉 world.

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