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Opthamology Terms
Basic Opthalmology Terms
25
Medical
Graduate
02/21/2010

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Term
exophthalmos (or proptosis)
Definition
abnormal protrusion of the eye
Term
epiphoria
Definition
excessive tearing (common cause: chronic inflammation)
Term
keraoconjunctivitis sicca
Definition
dry eyes
Term
lagophthalmos
Definition
inability to completely close the eyelid
Term
ptosis
Definition
drooping of upper eyelid (1-2m: sympathetic palsy, 3mm+: 3rd nerve palsy)
Term
chalazion
Definition
chronic inflammation of meibomian gland
Term
hordeolum (or sty)
Definition
acute inflammation of eyelid (usually S. aureus infection)
Term
ectropion/entropion
Definition
outward/inward turning of eyelid margin
Term
pterygium
Definition
thickening of bulbar conjunctiva growing across cornea
Term
pingueculum
Definition
yellow-brown fatty nodule in bulbar conjunctiva: usually harmless
Term
chemosis
Definition
conjunctival edema--caused by:
1. allergic reaction or infection causing increased vascular permeability
2. venous congestoin
3. decreased plasma oncotic pressure
4. Grave's disease (lymph drainage problem)
5. hypothyroidism
Term
scleral icterus
Definition
jaundice of bulbar conjunctiva (not sclera)
Term
miosis
Definition
pupillary constrictioin
Term
mydriasis
Definition
pupillary dilation
Term
hippus
Definition
normal fluctuation in pupillary constriction (in steady light)
Term
anisocoria
Definition
pupils are two different sizes
simple anisocoria is normal: up to 1mm in dim light or .5mm in bright light
In physiologic anisocoria the difference is constant in varying levels of light
Term
Marcus Gunn pupil
Definition
afferent pupillary defect where pupillary constriction differs depending on which eye receives the incoming light
Term
Argyll-roberston pupil
Definition
can constrict in accomodation but not in response to light (they are always small: CNS problem, eg syphilis)
Term
Adie's pupil
Definition
does not constrict to light and only slowly responds to accomodation
Term
Mobius' sign
Definition
difficulty with ocular convergence in accomodation due to Graves'
Term
amblyopia
Definition
unilateral defective vision that causes the cortex to cease responding to visual stimuli
Term
heterophoria
Definition
eyes are misaligned only when one is covered
Term
heterotropia
Definition
eyes are misaligned
Term
esotropia/esophoria
exotropia/exophoria
Definition
eye deviated in
eye deviated out
Term
comitant strabismus
Definition
eyes are misalinged to the same degree regardless of direction of gaze
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