Hypernym

ametropia 1

noun

(ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia

Domain_of_synset_-_TOPIC

ophthalmology 1

noun

the branch of medicine concerned with the eye and its diseases

astigmia 1

noundomain: state

Princeton WordNet [ver.3.1]

English

Definition

(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people

Synonyms

astigmatism 1
(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people

Derivationally related form

astigmatic 1

adjective

of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images

Hyponym

keratectasia 1

noun

abnormal bulging of the cornea of the eye

keratoconus 1

noun

abnormal cone-shaped protrusion of the cornea of the eye; can be treated by epikeratophakia

Member_of_this_domain_-_TOPIC

ophthalmology 1

noun

the branch of medicine concerned with the eye and its diseases