Hammond, C J Factors affecting pupil size after dilatation: the Twin Eye Study. [electronic resource] - The British journal of ophthalmology Oct 2000 - 1173-6 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Twin Study ISSN: 0007-1161 Standard No.: 10.1136/bjo.84.10.1173 doi Subjects--Topical Terms: AgedAging--physiologyEye Color--physiologyFemaleHumansMiddle AgedModels, GeneticMydriatics--pharmacologyPupil--drug effectsRefractive Errors--physiopathologyTwins, DizygoticTwins, Monozygotic