Biology 33 Chapter 4 Part 2

dacryoadenitis

Inflammation of the gland.

refractive errors

Conditions in which the eye incorrectly focuses light on the retina.

hyperopia

Farsightedness, where light rays from near objects focus beyond the retina.

myopia

Nearsightedness, the opposite of hyperopia.

presbyopia

Impaired vision due to old age.

accommodation

The ability of the eye to adjust focus on near objects.

blepharochalasis

Baggy eyelid.

blepharoptosis

Drooping of the eyelid.

chalazion

A chronic nodular inflammation of the meibomian gland.

cataract

Clouding of the lens that causes decreased vision.

diabetic retinopathy

A retinal disease condition in diabetics caused by problems with the capillaries.

ectropion

Condition of the eyelid rim turning outward.

entropion

Condition of the rim of the eyelid turning in.

epiphora

Condition where tears overflow from a blocked lacrimal duct.

glaucoma

Group of diseases characterized by increased intraocular pressure.

pseudophakia

A condition for an implanted artificial lens.

strabismus

Condition of eye misalignment, also known as squinting.

macular degeneration

Loss of central vision due to breakdown of tissues in the macula lutea.

retinal detachment

Separation of the retina from the underlying tissues.

hordeolum

Medical term for a sty, an acute infection of a sebaceous gland of the eyelid.

pterygium

A triangular, wing-shaped growth of conjunctival tissue extending onto the cornea.

trichiasis

Presence of misdirected eyelashes that rub on the conjunctiva or cornea.

amblyopia

Condition of decreased vision in early life due to a functional defect.

distance visual acuity

Measure of the ability to see identifiable objects from a specified distance.

fluorescein angiography

Visualization and photography of retinal and intraocular vessels.

ophthalmoscopy

Use of an ophthalmoscope to view the interior of the eye.

tonometry

Use of a tonometer to measure intraocular pressure.

blepharoplasty

Surgical repair of an eyelid.

cryoretinopexy

Operative procedure using cold to seal a hole in the retina.

cataract extraction

Excision of a cloudy lens from the eye.

dacryocystectomy

Excision of a lacrimal sac.

iridectomy

Excision of a portion of iris tissue.

iridotomy

Incision into the iris to allow drainage from the posterior chamber.

enucleation

Removing an entire structure, such as the eyeball, without rupturing it.

keratoplasty

Term for corneal transplant.

LASIK

Special technique using a laser to reshape the surface of the cornea.

phacoemulsification

Surgical procedure to break up a cataract for removal.

scleral buckling

Surgical procedure to treat retinal detachment by cinching the retina.

contact lens

Plastic lens fitted over the cornea to correct refractive errors.

eye installation

Introduction of a medicated solution in the eye.

mydriatic agent

Drug that causes dilation of the pupil.

miotic agent

Drug that causes contraction of the pupil.

cycloplegic

Agent that paralyzes the ciliary muscle during eye exams.