Ciliary Body, Crystalline Lens, Iris
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| show | 1) secrete aqueous humor; 2) control accommodation of crystalline lens
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| show | approximately 6 mm wide
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| show | ora serata to the scleral spur
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| show | Supraciliaris
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| show | supraciliary lamina
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| Which part of the ciliary body is adjacent to the sclera? | show 🗑
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| What is the supraciliaris made up of? | show 🗑
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| What three things does the supraciliaris contain? | show 🗑
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| Why are the collagen bands in the supraciliaris important? | show 🗑
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| show | Pars Plana
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| show | The pars plicata
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| show | 70 to 80
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| show | 2 mm
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| What are the regions between the ciliary processes called? | show 🗑
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| The zonule fibers attach to the pars plana or the pars plicata? | show 🗑
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| The pigmented epithelium of the ciliary body is continuous with? | show 🗑
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| The non-pigmented epithelium is composed of what type of cells in the pars plana? | show 🗑
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| The non-pigmented epithelium is composed of what type of cells in the pars plicata? | show 🗑
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| show | retinal nervous tissue
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| Which epithelial cells are active and secrete aqueous? | show 🗑
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| What type of tissue is the ciliary muscle made up of? | show 🗑
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| show | focusing at near
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| When the ciliary muscle contracts the lens gets a _______ front and back surface. | show 🗑
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| show | zonule fibers; accommodation
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| What are the three types of muscle fibers in the ciliary muscle? | show 🗑
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| Which muscle type lies adjacent to the supraciliaris? | show 🗑
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| Which muscle type is the middle transition? | show 🗑
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| What is the innermost region of the ciliary muscle? | show 🗑
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| show | true
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| show | Loose, connective tissue
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| The ciliary stroma lies between which layers of the ciliary body? | show 🗑
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| show | The ciliary stroma
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| Is the crystalline lens vascular? | show 🗑
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| show | In the posterior chamber, anterior to the vitreous chamber.
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| show | biconvex
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| What is the thickness of the unaccommodated lens? | show 🗑
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| What is the diameter of the lens at infancy? | show 🗑
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| show | 9.0 mm
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| How much does the thickness of the lens increase each year? | show 🗑
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| show | 20 diopters
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| show | increases
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| At what age do we have the max accommodative amplitude? | show 🗑
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| show | 14 diopters
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| At what age do you have zero accommodative power | show 🗑
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| show | A transparent envelope that surrounds the entire lens
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| What is the lens capsule classified as? | show 🗑
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| What is the capsule primarily made of? | show 🗑
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| The anterior capsule ________ with age. | show 🗑
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| show | anterior lens epithelium
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| show | 1 mm
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| Does the anterior lens epithelium produce new cells? | show 🗑
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| show | lens bow
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| show | embryonic nucleus
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| show | Embryonic nucleus
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| When are the fetal nucleus fibers laid down? | show 🗑
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| Which fibers are formed between birth and sexual maturation? | show 🗑
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| show | After sexual maturity
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| Do cells in the lens get larger as the get older? | show 🗑
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| show | loose their nuclei; migrate towards the center; become compressed
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| show | It becomes larger and less transparent
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| show | 1/3 larger
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| show | Refracting light
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| In the center of the lens (light path) there are many or few cells? | show 🗑
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| What does the lens contain that allows it to be transparent? | show 🗑
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| show | 1.42
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| show | 400 to 1000 nm
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| The cornea absorbs wavelengths below ___nm? | show 🗑
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| show | 300 and 400
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| show | 400
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| show | cataract
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| What is the most common type of cataract? | show 🗑
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| show | Long-term exposure of UV rays
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| show | Congenital
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| What can cause traumatic cataracts beside trauma to the eye? | show 🗑
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| show | Nuclear cataract
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| show | Senile Nuclear Sclerosis
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| show | Cortical
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| A cortical cataract is only problematic when...? | show 🗑
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| Where is a posterior subcapsular cataract located? | show 🗑
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| What causes a posterior subcapsular cataract to form? | show 🗑
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| What has been linked to posterior subcapsular cataracts? | show 🗑
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| show | Diabetic cataracts
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| show | Local anesthesia
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| show | A small incision into the anterior chamber
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| What is opened during cataract surgery? | show 🗑
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| show | The epithelium and all lens fibers are removed, leaving only the capsule intact.
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| show | intra-ocular lens
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| What is the main function of the iris? | show 🗑
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| show | Iris
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| Where is the center of the pupil located in relation to the center of the iris? | show 🗑
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| show | 1 to 9 mm
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| show | brightly lit conditions
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| show | dimly lit conditions
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| What is the diameter of the iris? | show 🗑
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| show | Anterior epithelium
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| What is the anterior epithelium of the iris made uop of? | show 🗑
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| The anterior epithelium is the only structure in the body that contains myoepithelial cells, true or false? | show 🗑
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| Which epithelium in the iris is heavily pigmented? | show 🗑
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| show | When the epithelial cells curls around from the posterior iris to the anterior iris.
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| What does the pupillary frill encircle? | show 🗑
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| show | copper
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| The pupillary frill has a ________ appearance. | show 🗑
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| What is the collarette? | show 🗑
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| show | The iris root
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| show | .5 mm
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| show | iris root
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| The iris root joins the iris to the...? | show 🗑
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| What is iridodialysis? | show 🗑
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| show | hemorrhaging and paralysis of the muscles in the eye
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| What does the stroma in the iris contain? | show 🗑
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| Where is the sphincter muscle located? | show 🗑
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| show | smooth muscle cells
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| show | .75 to 1 mm
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| Contraction of the sphincter muscle causes...? | show 🗑
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| show | parasympathetic nervous system
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| The parasympathetic nervous system is part of the _________ system, which means you don't have to think about it. | show 🗑
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| show | speeding up
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| The parasympathetic nervous system, example constriction of pupils, causes... | show 🗑
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| The contraction of the dilator muscle...? | show 🗑
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| What is the contraction of the dilator muscle known as? | show 🗑
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| show | sympathetic
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| show | crypts
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| show | The arrangement and density of connective tissue in the anterior border and stroma, and the amount of pigment.
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| show | brown and smooth
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| show | Blue, grey, or green
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| show | There is no pigment in the epithelial layer
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| show | Nevus
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| What is it called when someone has two different colored irises, or if a portion of one's iris is different from the rest. | show 🗑
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| show | An abnormal attachment of the iris surface to another surface.
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| show | A wedge-shaped, full thickness section of the iris is removed for aqueous flow.
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| show | Hole going through the iris to allow aqueous flow, performed by a laser.
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| Which is less invasive, an iridectomy or iridotomy? | show 🗑
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