Visual Test was created in 1992.

Benton H. Lau has written:

'Shake test results of the MDHC test stand in the 40- by 80-foot wind tunnel' -- subject(s): Wind tunnels

engage multiple sensory systems, leading to better comprehension and retention of the material.

A visual field test; the most common type is called a Humphrey Visual Field 30-2 test; older and less common visual field tests include Goldmann visual fields and tangent screen visual fields.

Source: I am an Optometrist

Effectiveness of Different Media -

Impact and Retention of Media:

1. Retention levels of different media:

Research has shown that different media have different percentage of retention of the message conveyed.

i) Print media - 10% retention: An average person when he reads any material he remembers approximately 10% of what he has read.

ii) Audio - 20% retention: An average person when he hears any message he remembers approximately 20% of what he has heard.

iii) Visual - 30% retention: An average person when he sees anything he retains or remembers approximately 30% of what he has seen.

iv) Video (Audio Visual) - 50 % retention: If an average person sees and hears a particular message he remembers about 50% of what he has seen and heard. The maximum retention is in the case of audio-video media since both the senses of sight and hearing are involved in grasping the message conveyed.