Common defects of the human eye
I can describe common defects of the eye and how we treat them.
Common defects of the human eye
I can describe common defects of the eye and how we treat them.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Common defects of the eye (e.g. cataracts, short- and long-sightedness) and how they impair vision.
- How common defects of the eye can be treated.
- Interpretation of ray diagrams to explain how common eye defects affect vision, and the effects of corrective lenses.
- How colour blindness occurs and its impact on vision.
Keywords
Lens - An object that can focus light rays. In the eye, it brings light rays to focus on the retina.
Retina - The back of the eye which senses light brightness and colour.
Focus - The process of bringing light rays together to converge at a single point creating a clear image.
Refraction - Occurs when light travels from one transparent medium to another, causing a change in direction.
Common misconception
Mistakes with the defects and treatments in vision caused by long- and short-sightedness (e.g. getting the symptoms or the type of lenses mixed up) or how lenses actually correct vision are common.
The conditions are dealt with separately with clear and concise information conveyed and supported with diagrams and reinforced with questions that focus on these mistakes and misconceptions.
To help you plan your year 10 biology lesson on: Common defects of the human eye, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 biology lesson on: Common defects of the human eye, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 4 biology lessons from the Coordination and control: the human nervous system unit, dive into the full secondary biology curriculum, or learn more about lesson planning.
Equipment
None required.
Licence
Lesson video
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Starter quiz
6 Questions
cornea
iris
lens
ciliary muscles
cornea
lens
retina
when the ciliary muscles relax to focus on objects that are far away
when the ciliary muscles contract to focus on objects that are near
Exit quiz
6 Questions
