3B Scientific - Biology Catalog

Functional Eye
With this model the functions of the human eye can be taught very effectively.
By moving the retina, the shape of the eye can be changed. The lens
and ciliary body are made of silicone to allow the change of form and
thickness of the lens. Pictures can be projected on the retina that allows
you to demonstrate:
• Accommodation of the lens
• Near point of vision
• Myopia (near sightedness)
• Hypermetropia
• Presbyopia
• How to correct these problems with glasses
Supplied with detailed instruction manual.
45x30 cm; 2.0 kg
E
9982-1005046
Functional Eye – Small Version
Same features as model 9982-1005046.
32x18 cm; 1.5 kg
E
9982-1005047
9982-1005046
Sensory Organs
9982-1003806
9982-1005047
Physical Eye Model
This model can be used to demonstrate the optical functions of the eye,
e.g. representation of an object on the retina, accommodation (change in
the lens curvature), short sightedness and far sightedness.
The model comprises:
• Half eyeball with adjustable iris diaphragm, lens holder and 2 convex
lenses (f = 65 mm and 80 mm), on a rod
• Half eyeball with retina (transparent screen), on a rod
• Lens holder with one concave and one convex corrective lens, on a rod
• Candle holder with 2 candles, on a rod
• Aluminium rail, 50 cm long, with 4 clamp slides
• Storage case
49x5.5x18 cm; 2.0 kg
D
9982-1003806
3B MICROanatomy Eye
This model illustrates the microscopic structure of the retina with choroid
and sclera. The left block like, layered side of the model side shows the
complete structure of the retina including the vascular layer and parts of
the sclera from a light microscopic view. The right part of the model is a
sectional enlargement. It shows the microscopic structure of the
photoreceptors and the cells of the pigmented layer.
25x23x18.5 cm; 1.2 kg
L/D/E/F/S/P/I/J www.
9982-1000260
Anatomical Model Human
9982-1000260
...going one step further 37