Nuclear cataracts affect the centre of your lens. As they develop, your lens may turn yellow or brown. During the early stages, nuclear cataracts can cause nearsightedness or even temporarily improve your near distance vision; but over time, it will become harder to see clearly.
Cortical cataracts develop on the outer edges of your lens and appear as white, wedge-shaped streaks. Over time, the cataract can cover your entire lens and impair your vision.
Posterior Subcapsular Cataracts
Posterior subcapsular cataracts develop at the back of your lens as a small opaque area directly affecting the path of light entering your eyes.