Who Actually Found Three Types of Cones in the Retina

question 345

Multiple Choice

Who actually found three types of cones in the retina?

• A) Young and Helmholtz
• B) Hering
• C) Brown and Wald
• D) Smith and Wesson

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Definitions:

Cross-sectional Design

A research design that analyzes data from a population, or a representative subset, at a specific point in time to examine relationships between variables.

Observational Study

A research method involving the collection of data without interference with the subjects’ natural environment.

Case-control

A type of observational study that compares individuals with a specific condition (cases) to those without the condition (controls) to identify potential risk factors.

Retrospective

Looking back on or dealing with past events or situations.