NAO EXAM PACKAGE DEAL GRADED A+

When a ray of light travels from air into water (which is denser than air) what happens to the ray of light if the ray is perpendicular to the surface? - ️️If the ray is perpendicular to the surface it slows down but does not change direction; it is not deviated or displaced If a light beam ...

When a frame is said to have a parabolic curve (or positive face form), the following condition is meant: - ️️The bridge of the frame is out further than then end pieces A patient stops in to see you for adjustment of his glasses. After careful inspection you find the only thing wrong that th...

If a person has exposure to sunlight at least 2 hours or more during the day, their _____ - ️️Ability to adapt to night vision is compromised if they don't protect their eyes from the sun exposure _____ are generally inorganic materials (metals or minerals) that are vacuum deposited to ad...

Layers of the cornea (outermost-innermost) - ️️Epithelium, Bowman's layer, stroma, descements membrane, endothelium Layers of tear film (outer-innermost) - ️️Lipid, aqueous, mucin Tear lake, tear prism, tear meniscus - ️️Collection of the thin film of tears on the lower lid margin...

The secondary curve of a rigid contact lens generally: Is steeper than the CPC (Central posterior curve) 1-2 D flatter than CPC 2-4 D flatter than CPC None of the above - ️️2-4 D flatter than CPC A liquid coming in contact with a hydrophilic lens material with a relatively small wetting an...

When a ray of light meets a different substance what 4 things occur? - ️️a. Some light will be reflected at the boundary. b. Some are scattered. c. Some are absorbed. d. The rest will travel through new substance. Which color has the shortest wavelength, travels the slowest, bends the most,...