Learn Russian: С моей точки зрения, это ошибка. - From my point of view, this is a mistake.

Yes! Both express your opinion. По-моему is the adverbial way to say 'in my opinion,' which you are learning in this lesson. It is very common in everyday speech. С моей точки зрения literally means 'from my point of view' and sounds just a bit more formal or analytical, much like in English.

Why do моей and точки change their endings here?

They are in the genitive case. The preposition с can mean 'with' (taking the instrumental case), but here it means 'from'. When с means 'from,' it requires the genitive case. Therefore, the feminine noun точка (point) becomes точки, and the pronoun моя (my) becomes моей.

If зрения comes from the neuter noun зрение (sight or vision), why is it also in the genitive case?

In English, you say 'point of view.' In Russian, the word 'of' is expressed using the genitive case. To link 'point' and 'vision' together to mean 'point of vision,' the second noun must be in the genitive. So, зрение changes to зрения.

The word ошибка is feminine. Why does the sentence use the neuter это instead of эта?