Optician License Exam Flashcards

Study Notes

Nylon: Highly elastic material commonly used for frames, notably changes in elasticity when wet.
Carbon Filter: Threaded carbon frames are known for being strong, slim, and lightweight without flexibility, typically used for frame fronts.
Polyamide: A nylon-based material that is sturdy and lightweight, weighing only 72% of cellulose acetate.
Monel: An alloy containing 63-70% nickel, providing corrosion resistance and flexibility.
Titanium: Exceptional for being lightweight, strong, rust-resistant, and hypoallergenic, although costly to produce.
Stainless Steel: An iron-chromium alloy that is resilient, pliable, and sleek.

Polarized Lenses: Specialized for reducing glare from surfaces like water and snow, enhancing vision in bright conditions.
UV Protective Lenses: Designed to block harmful ultraviolet rays, safeguarding eye health.
Single Vision Lenses: Uniform prescription suitable for correcting common refractive errors across the entire lens.
Scratch Resistant Lenses: Coated to minimize scratching, though no lens can be completely scratch-proof.
Anti-Reflective Lenses: Coated to reduce reflections, aiding vision in low-light conditions and reducing glare.
Photochromatic Lenses: Adjust darkness in response to UV exposure, transitioning from clear indoors to darker outdoors.
Fresnel Lenses: Feature concentric ridges providing a prism effect for specific optical applications.

Rimless Mounting: Lenses secured without frames using screws or adhesive solutions, offering a minimalist look.
Semi-Rimless Mounting: Combines screws with a metal reinforcer for lens support, maintaining a stylish aesthetic.
Numont Mounting: Offers a unique bridging system securing lenses only at the edges near the nose, limiting contact points.
Critical Measurements: Vertex distance is crucial for fitting individuals with aphakia to ensure appropriate lens positioning.

Riding Bow Temple: Curved design that wraps around the ear, ideal for active individuals including children.
Skull Temple: Matches the natural curve of the head, providing a comfortable fit.
Saddle Bridge: Distributes frame weight evenly across the nose area, enhancing comfort.
Keyhole Bridge: Designed for shorter noses, allowing for exposed upper nasal regions.
Convertible Temple: Versatile design that can be straight for library use or curved for skull fitting.

Prentice's Rule: Quantifies prism power based on lens distance from optical center.
Aperture: Refers to openings that allow a controlled amount of light to enter.
Decentration: The offset of the lens optical center from the frame's central position, affecting visual clarity.
Segment Depth: The maximum vertical measure of bifocal segments on multi-segment lenses.

Patient Options: Provide a range of lens types, materials, frame styles, and accessories tailored to individual needs.
Measurement Requirements: Important dimensions include pupillary distance (PD), temple length, and frame fit to ensure proper alignment and comfort.
Frame and Lens Choices: Should consider the user's prescription, lifestyle, fashion preferences, and occupational needs.

Corneal Reflex Pupillometer: Accurately measures pupillary distance for precise lens fitting.
Pick-up Screwdriver: Specialized tool for handling small screws in eyewear repairs.
Blocker and Block: Devices used to hold lenses in place during the surfacing process.

Astigmatism: A refractive error resulting from an uneven curvature of the eye, leading to distorted vision.
Anisometropia: A condition characterized by a significant difference in refractive power between the eyes.
Prism Diopter: Measuring unit for prism power, indicating the degree of light deviation caused by a prism.