Ocular Anatomy
Provides lubrication through mucus production and prohibits microbes from entering the eye
What is the Conjunctiva
Pliers that cut
What is Chapel pliers
Point of lens where a ray of light can pass through without deviation
What is the optical center
Focal length( distance it takes for the lense to bring the light to a point of focus)
What is F=1/D
Thinning of the cornea which results in a rounded cone shape
What is Keratoconus
Lines the cornea and covers the optic nerve and is composed of primarily tough collagen fibers
What is the Sclera
Removes extra glass from lens blank
What is Crimping pliers
Lens can no longer be accommodated
What is cycloplegics
Spherical Equivalent
What is 1/2 the Cyl+Sph
Inflammation of the eyelid
What is Blepharitis
Transmits visual information from the retina to the brain
What is The Optic Nerve
Measures focal length of lens and translates into power reading
What is Lensometer
Fluttering of the eye
What is Nystagmus
Transposition( convert cylinder sign without changing corrective power)
What is Sph+Cyl, change sign of Cyl, and change axis by 90
Epithelial tumor of the eyelid
What is Basal cell carcinoma
The 7 extra ocular muscles
What is Superior/Inferior Oblique, Superior/Medial Rectus, Lateral/Interior Rectus, and Lavator Palpebrae Superioris
Tool that measures base curves in glasses
What is a lens clock
Condition where each eye perceives images in different sizes
What is Anisiekonia
Lens decentration( Optical center is not the same as geometric center and needs moved)
What is Frame PD- Customer PD= total decentration
Deterioration of retinal capillaries due to increase in blood glucose concentrations
What is Diabetic Retinopathy
Maintain intra-ocular pressure, provide nutrients, immunity response, and gives refractive index for vision.
What is the Aqueous Humor
Special lens grinding technique used to fix unwanted prism effects while looking down to read
What is Bicentric grinding( Slab off)
Ion exchange that strengthens lenses by creating a hard outer surface with an inner compression layer
What is Chemical Tempering
Vertex distance (Distance from eye to ocular surface of the lens)
What is MM moved*(power*power)/1000= Dioptic change
Bleeding between the conjunctiva and the sclera
What is Subconjunctival Hemorrhage