Explore the optics of normal vision and vision correction, including:
- Normal vision
- Near-sightedness
- Far-sightedness
- Astigmatism

OS-8477A – Human Eye Model set:
[1] 3-dimensional working model of the human eye including 2 lenses and water tank to simulate the
vitreous humor
[2] Plastic lenses create images for normal vision, far-sightedness, near-sightedness and astigmatism
[3] Fixed Corneal lens and interchangeable crystalline lens simulate how the eye focus on near and far
objects
[4] Slot for eyeglass lens simulates how vision can be corrected
[5] Variable pupil size demonstrates how the image changes in brightness and clarity
[6] Can be used with the Basic Optics System to assist in measuring size and orientation of illuminated
object
[7] Focal lengths in Air of Plastic Lenses: +62 mm (+16d), +120 mm (+8.3d), +400 mm (+2.5d), -1000
mm (-1.0d),
-128mm (-7.8d) cylindrical, +307 mm (+3.26d) cylindrical
[8] Corneal Lens Focal Length in Air: +140 mm (+7.1d)
[9] Dimensions: 15 cm x 17 cm x 10 cm high
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