Pathologies Flashcards
Neovascularization
Due to lack of oxygen, new blood vessel growth toward/into cornea
Very common, especially with CL over wearing
(Green filter, parallel pipe on slit lamp)
Edema
Swelling of tissue, swollen hazed eye
Seen often with CL wear of low Dk values
(Diffuse?)
Corneal Opacities
Scars, usually due to damage of a layer on cornea, endothelium and Bowman’s will NOT regenerate. Stroma will regenerate, but not uniformly, causing opacities
(Parallel pipe/Retro Illumination)
*Corneal Infiltrates
White blood cells in the cornea tissue, due to infection. Similar appearance to corneal scarring. Immune response, NEEDS ANTIBIOTIC.
(Optic section)
Keratitis Sicca
Inflammation due to dryness. Could need a brand change for CLs. Very common
(Green filter, diffuse)
Keratoconus
Thinning of central cornea, resulting in a cone shape and high astigmatism
(Optic section)
*Corneal Ulcer
Corneal nick, as result of trauma, burns or infection. Disrupts epithelial and stroma layers of cornea.
(paralleled pipe)
Pterygium
Pinkish triangular tissue growth into cornea. Typically starts nasally and grows slowly.
(Diffuse/paralleled pipe)
Ptosis
Sagging of upper lid. Congenital, acute or nerve problem. Can wear CLs, but may be harder to insert.
Entropian
Eyelid turned inward. Causes irritation of film due to lashes rubbing. Can wear CLs, they may even help with irritation.
Ectropian
Eyelid turned outward, can see conjunctiva. Shouldn’t be fit with CLs, no lid to hold lens in.
Xanthelasma
Yellow lipid deposits around eyes, due to cholesterol. Get family history. Can wear CLs
Blepharitis
Inflammation of the lids. Bacterial, viral, acute and chronic. Depending on severity, can wear CLs but only dailies and social events.
Chalazion
“Stye” not painful or active. Occurs more with children, and can only be removed by surgery.
(Parallel piped)
Hordeolum
“Stye” painful, infectious, puss filled
Treated with antibiotics.
Should not wear CLs with either until resolved.
(Paralleled pipe)
