Test 1 - The eye

The "battle of the visual fields" effect allows

• to determine the depth and volume of space

• to see in light conditions from night to sunny day, determine colours and provide high resolution

• to determine the texture of the surface; also this effect appears when viewing colored and shiny objects

The best vision distance is accepted to be

• 6 m

• infinity

• 250 mm

• from 6 m to infinity

If visual acuity is equal to one, what is the angle δ?

• 1° (one degree)

• 1' (one minute)

• 180° (180 degrees)

• 10'' (ten seconds)

What does stereoscopicity depend on?

• The angle of visual coverage of the sides of the object being viewed

• The surface properties of the object being viewed

• The experience and level of training of the individual

Choose what types of vision there are

• Night vision

• Morning vision

• Evening vision

• Daylight vision

• Twilight vision

What is the Purkinje effect?

• Blue and green objects appear brighter than red and yellow objects in twilight lighting

• It is impossible to represent the shine of metal surfaces and the shimmer of precious stones in a flat drawing

• When an image is artificially stabilised at one spot on the retina, after 1-3 sec the person stops seeing it

A biconvex, elastic, vascular-free, gelatinous body, the shape of which changes with the help of the ciliary muscles, is called a

• Pupil

• Sclera

• Retina

• Crystalline lens

• Cornea

Choose the correct statements about the retina of the eye

• Rods and cones are evenly distributed throughout the retina

• The cones are responsible for our vision in low light and switch off in bright light

• The central fovea contains the yellow spot, where the retina is the smallest thickness

• The rods are responsible for our vision in low light and switch off in bright light

• There are three types of cones: blue, red and green cones

What wavelength range is the human visual analyzer adapted to?

• 200-600 nm

• 220-720 nm

• 380-780 nm

• 460-960 nm

What type of cones are primarily stimulated by violet light?

• S

• L

• M

• L и M