Recently, I am very surprised at my poor eyesight.

It is not only old sight but also astigmatic eye.

If my eye sight keeps low level, I have no choice but wearing glasses. However, when I am in good shape, my eye sight becomes good.

At that time, wearing glasses annoys me.

Anyway, I think this has been not serious trouble in my usual life and routine works.

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The other day, when I asked my junior worker's advice about a direction of new column serialization, he scolded me for an inattentive to my work. So I have started them by the book he had recommended.

I have a lot of troubles because I cannot catch the characters of mathematical expression in the book.

Today, I got mad with the expression with thinking,

"Why do these formulas are connected by equal character? It must be a typo!"

Unfortunately, I overleaped a bar expression that was located an attached character of the formula.

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"A boy becomes older easily, so he must be hard to complete his study."

I haven't noticed that this utmost famous saying means a senile change of eye sight.