what are the human vision including the structure of the eye, the formation of images by the eye, and common defects of vision? What is the general shape of an eyeglass lens used to correct myopia? What general lens shape would correct hyperopia? and How would these lens shapes be altered if an astigmatism correction was added

Which of the following is true about the eye condition known as myopia? Select one: а. It means the eye can focus at short distance, but not long distance, and is corrected with eye glasses that have diverging lenses O b. It means the eye can focus at long distance, but not short distance, and is corrected with eye glasses that have converging lenses O c. It means the eye can focus at short distance, but not long distance, and is corrected with eye glasses that have converging lenses O d. It means the eye can focus at long distance, but not short distance, and is corrected with eye glasses that have diverging lenses Check