| post-stenotic dilation | Dilation of an artery, most commonly the pulmonary artery or the aorta, distal to an area of narrowing. (05 Mar 2000) |
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| pupillary dilation | <ophthalmology> The action of stretching or enlarging the pupil for example by atropine. (18 Nov 1997) |
| dilation | The process of enlargment or expansion. The word dilatation means the same thing. Both come from the Latin dilatare meaning to enlarge or expand. (12 Dec 1998) |
| dilation and curettage | Dilation of the cervix and curettement of the endometrium. Acronym: D&C (05 Mar 2000) |
| dilation and evacuation | Dilation of the cervix and removal of the products of conception. Acronym: D&E (05 Mar 2000) |
| dilation thrombosis | Thrombosis due to slowed circulation consequent upon dilation of a vein. (05 Mar 2000) |
| urethral dilation | Increasing the caliber of the urethra by passage of a dilator. (05 Mar 2000) |
| Adie's pupil | <syndrome> A condition manifested by usually one tonic pupil with absent tendon reflexes. An idiopathic postganglionic denervation of the parasympathetically innervated intraocular muscles, usually complicated by signs of aberrant regeneration of these nerves: a weak light reaction with segmental palsy of iris sphincter, a strong slow near response. Deep tendon reflexes, particularly ankle and knee, are often asymmetrically reduced. See: tonic pupil. Synonym: Adie's pupil, Holmes-Adie pupil, Holmes-Adie syndrome, pupillotonic pseudotabes. (05 Mar 2000) |
| amaurotic pupil | Pupil in an eye that is blind because of ocular or optic nerve disease; this pupil will not contract to light except when the normal fellow eye is stimulated with light. (05 Mar 2000) |
| Argyll Robertson pupil | <clinical sign> Pupils of the eye which react to accommodation but not to light. Seen in cases of tertiary syphilis. (27 Sep 1997) |
| artificial pupil | An opening made by excision of a portion of the iris in order to improve the vision in cases of central opacity of the cornea or lens. (05 Mar 2000) |
| Bumke's pupil | Dilation of the pupil in response to anxiety or other psychic stimuli. (05 Mar 2000) |
| paradoxical pupil | See: paradoxical pupillary reflex. Pinhole pupil, an extremely constricted pupil. (05 Mar 2000) |
| Marcus Gunn pupil | Relative afferent pupillary defect. Synonym: Gunn pupil. (05 Mar 2000) |
| catatonic pupil | Transient pupillary dilation with absence of pupillary reaction to light and convergence. (05 Mar 2000) |