Sometimes a patient may go home with treatments administered by the eye clinic and share these treatments with family members with a similar problem. without consulting an eye doctor they take these medications prescribed for their relatives and starts to use it. This is 100% wrong.
Even Though they might be suffering from similar symtoms the cause of the problem might be different. The disease that caused the symptoms of the relative who came to the clinic may not be the same as that of their relative ergo they dont need to share the same medicines. If you have an eye problem make sure you see an eye doctor immediately for proper examination so they can give you the right medicine.