The Standard Instrument Used in Schools to Screen the Vision

question 59

Multiple Choice

The standard instrument used in schools to screen the vision of students is the

• A) Bausch Orthorater.
• B) Keystone Telebinocular.
• C) Panoramic View Tester.
• D) Snellen Chart.

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Definitions:

Cryptic Species

Cryptic species are lineages that historically have been treated as one species because they are morphologically similar but that are later revealed to be genetically distinct.

Neotropical Skipper

A type of butterfly found in the Neotropical region, characterized by rapid, skipping flight patterns.

Astraptes Fulgerator

A species complex of butterflies, previously thought to be a single species, showcasing cryptic species diversity.

Stable Ecotype Model

Stable ecotype model is a species concept constructed for microbes in particular. In this model, a species is a long-lived population of genetically related individuals that share a stable set of adaptations for the same ecological niche.