Seeing in 3D, is not the same as seeing in depth. The best description of the benefits of stereopsis that I have ever read is in the book Fixing my Gaze by Dr. Susan Barry (aka “Stereo Sue”). It is a must-read book for anyone interested in treating strabismus and developing good binocular stereoscopic vision.

3D视觉，也就是 立体视，它并不等同于深度视觉。Susan Barry(也称为“Stereo Sue”)写的一本书“Fixing my Gaze”，书中诠释了立体视觉的好处，这是我看过的书中，诠释的最好的一本。如果你对斜视治疗感兴趣，或者想提高双眼立体视，那这本书将是你的必读书目。

Fixing my Gaze

Susan Barry

Dr. Barry is a neurobiologist specializing in the neuroplasticity of the brain. As a child Dr. Barry was operated on three times for strabismus (crossed eyes). The first time was at age 2, and then again at ages 3 and 7. After the surgeries, Dr Barry discovered that, although her eyes looked approximately straight, she had only a limited ability to judge depth and had no stereopsis. This made her much more insecure in all of her spatial judgments, especially when driving. Dr. Barry’s amazing book describes how she developed stereopsis for the first time in her life at the age of 48, after undergoing an optometric vision therapy program with, Dr. Theresa Ruggiero, a behavioral optometrist from Massachusetts. In the book, Dr. Barry describes in a uniquely personal and poetic way, exactly what seeing in stereo is like.

Barry博士是一位神经生物学家，主要研究 大脑的神经可塑性。Barry博士在孩童时期患有斜视(斗鸡眼)，因此做了三次手术。2岁时，做了第一次手术，3岁、7岁时，做了另外两次手术。手术之后，Barry博士发现，尽管她的眼睛看起来和正常人一样，但她只有非常有限的深度知觉，完全没有立体视。这使她在所有需要空间判断能力的活动中，缺乏安全感，尤其是在驾驶时。

书中讲述了她在Theresa Ruggiero博士那里进行视觉训练，终于，在她48岁时，第一次拥有了立体视。Theresa Ruggiero博士是来自美国的马萨诸塞州的视光医生。在这本书里，Barry博士用一种独特而具有诗意的文字，回忆她获得立体视的感觉。

图6拥有立体视觉后，看到的雪花

下面这段话摘自Barry博士的书。

[Her] words remind me of a wonderful sight I experienced one late winter day in the early stages of gaining stereopsis. I rushed out of the classroom building to grab a quick lunch, and I was startled by my view of falling snow. The large wet flakes were floating about me in a graceful, three-dimensional dance. In the past, snowflakes appeared to fall in one plane slightly in front of me. Now I felt myself in the midst of the snowfall, among all the snowflakes. Overcome with happiness, I forgot all about lunch and stood quite still, completely mesmerized by the enveloping snow.

她的话让我想起深冬的那一天，那时我刚刚获得立体视。我冲出教学楼，准备去吃午饭。天上飘下的雪花让我不禁惊叹。一朵朵雪花在我面前优雅地旋转，舞姿曼妙，以一种三维视觉效果呈现在我眼前。

在此之前，下雪对于我来说，就是雪花在平面上落下。而现在，我感觉自己在雪的世界里，雪花在我周围飘落。我沉浸在幸福和喜悦里，竟然忘记了午饭，我久久地伫立在雪地里，陶醉在漫天雪景中。

（文章摘自: CROSSED & LAZY EYES MYTHS,MISCONCEPTIONS AND TRUTHS）

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