Name of teaching material
How the eye focuses self-made product
Japanese Page URL
*The description appears by hovering the cursor over the image.
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(1) The eye model comprises the ciliary muscle (pink), the lens (white), and the ciliary zonule (blue strings).
(2) The ciliary zonule is placed between the lens and the ciliary muscle, connecting both.(3) The pink part was removed from the eye model in picture (2)(4) Increasing the inner diameter of the ciliary muscle causes the ciliary zonule to become taut, resulting in a flatter lens.(5) Decreasing the inner diameter of the ciliary muscle causes the ciliary zonule to become slack, resulting in the lens thickening.
| Target | Students with visual impairment (Physical Therapy Course, part of the Advanced Vocational Course) (≥ 18 years old) |
|---|---|
| Disability category | visual impairment |
| Teaching units / Applicable scenes | other acupuncture, moxibustion, manual therapy |
| Specific purposes |
• the movement of each part of the eye during focusing • the anatomical spatial relationship of each part of the eye. |
| Considerations for disability characteristics |
• Common eye models make it easy to see the whole image; however, their immobility prevents students from identifying the movement of each part of the eyeball. Their poorly contrasting colors also make it hard for students to understand the anatomical spatial relationship of each part, resulting in difficulty in imagining the movement of each part. • This teaching material comprises only three parts: the lens, the ciliary muscle, and the ciliary zonule; this simple structure enables students to easily understand the movement of these parts during eye focusing. • These parts are made of materials with different textures, enabling students with low vision(amblyopia) or total blindness to easily understand then by sight and touch. |
| Expected effects and results |
• the anatomical spatial and movement relationships among the lens, the ciliary muscle, and the ciliary zonule • the characteristics of the lens, such as how the elasticity and thickness of the lens affect the optical appearance of near and far objects, and will be able to use the knowledge obtained in various applications. |
| How to use |
(1) Understand the anatomical spatial relationship of the lens, the ciliary muscle, and the ciliary zonule. (2) Move the ciliary muscle (contract and expand). (3) Observe changes in the ciliary zonule (slack or taut), according to the movement (contraction or relaxation) of the ciliary muscle. (4) Observe changes in the lens (rounder or flatter), according to the state of the ciliary zonule. (5) Understand how the thickness of the lens affects the optical appearance of near and far objects. |
| Related teaching materials and information | |
| Useful for other students |
- Informant Special Needs Education School for the Visually Impaired, Univ. of TSUKUBA
- Keywords focusing, palpation
- Created 2019-08-08 15:53:45
- Updated 2020-06-08 15:22:53