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Mod E unit 1 Optical

Teacher: Ms. Tiffiny
Horizontales
Perception of two images where there is only a single object, aka double vision
A lens having a CONVEX front surface and a CONVEX back surface
A term used to describe a lens that is outwardly curved on both surfaces
Medical doctor (MD degree from an accredited medical school) specializing in the medical care of the eye, including correction of refractive errors, diagnosis, and both, pharmacological and surgical treatments
The surface curve of a lens that becomes the basis from which the other remaining curves are calculated. in the us and most other parts of the world, this is usually the front surface spherical curve of the lens
A surface having separate curves at right angles to one another
An eye condition whereby the major meridians of the correcting lens are at an oblique angle, between 30 and 60 degrees or 120 and 150 degrees
Condition in which one eye is hyperopic while the fellow eye is myopic
Broad end of prism
Doctor of Optometry (OD degree from an accredited Optometry school) are trained in the diagnosis of refractive errors and medical conditions of the eye
Unit of refractive power, equal to the reciprocal of the lens focal length in meters
A condition in which one eye differs significantly in refractive power from the other
Verticales
A small pocket sized instrument for measuring the surface curve of a lens. Also known as a lens clock.
A small pocket watch sized instrument for measuring the surface curve of a lens. Also known as a lens measure
A differential vertical prismatic effect between the two eyes. At near this can be induced by right and left lenses of unequal powers when the wearer drops his or her eyes below the optical centers of the lenses
Two nonparallel, transparent surfaces that cause entering light to change direction as it exits
A schematic representation of which the two major meridians of a lens of lens surface are depicted
A lens having a single refractive power in all meridians
The junction point at which the two nonparallel surfaces of a prism meet
The weaker back surface curve of a minus cylinder from lens
A lens having a refractive power in one meridian only and used in the correction of astigmatism
The vergence power of a lens at a designated position other than that occured by the lens itself
The superlative degree of least power of a cylinder or spherocylinder lens
Professional that is trained to fit, dispense, and manufacture vision-correcting eye wear frames, lenses and contacts
A tool having a curvature matching that of the curvature desired for a lens surface. The lens surface is rubbed across the face of the tool and, with the aid of pads, abrasives, and polishes, the lens surface is brought to optical q1uality