A woman aged 70 has a cataract in her left eye. She is also long-sighted.
Explain how a cataract and long-sightedness each affect her vision, and how each problem can be corrected.
[6]
Markscheme
2.4 The eye Questions
42 exam-style questions on Edexcel GCSE Biology 2.4 The eye, covering 2.4.1 Structure and function of the eye and 2.4.2 Eye defects and their correction. Each one has a worked solution and a mark scheme showing where the marks go.