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• n  (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
• n  reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller

• meiosis
• reduction division
• light reflex
• pupillary reflex
• myosis

News & Articles

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• Omeros up premarket on new eye surgery drug data
  Shares of drug developer Omeros rose in premarket trading Tuesday after the company reported new data for an experimental eye surgery drug. The drug is designed to reduce pupil constriction, or miosis, ...
  Nov. 19, 2013 - Associated Press via Yahoo! News
• Omeros Reports Phase 3 OMS302 Clinical Data Presented at the Annual American Academy of Ophthalmology Meeting
  SEATTLE, Nov. 19, 2013 /PRNewswire/ -- Omeros Corporation (OMER) today reported analyses of Phase 3 clinical data showing the impact of OMS302 on reducing the incidence of miosis (pupil constriction) during intraocular lens replacement (ILR). OMS302 is the company's proprietary Pharmacosurgery® product being developed for all ILR, including cataract surgery and refractive lens exchange. The ...
  Nov. 19, 2013 - PR Newswire via Yahoo! Finance