WordNet

(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people (同)astigmia
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point (同)astigmia

PrepTutorEJDIC

[Combination of measurement of retinal vascular caliber, adaptive optics and fluorescent angiography in early diagnosis and monitoring of diabetic and hypertensive retinopathy].

Stepushina OA, Bol'shunov AV.Abstract15 patients with diabetic and hypertensive retinopathy are examined. Retinal vascular caliber was measured using adaptive multifocal fundus camera (AMFC), fundus camera "Topcon" TRS-NW200 and FAG. Combination of retinal vascular caliber measurement and fundus foto using AMFC in patients with ametropia and astigmatismus showed apparently lower arteriolovenular coefficient (A VC) compared with that estimated using FAG imaging. Retinal vascular caliber measurement using adaptive optics is a highly sensitive method of visualization and monitoring of early signs of diabetic and hypertensive retinopathy.
Vestnik oftalmologii.Vestn Oftalmol.2011 Mar-Apr;127(2):29-31.
15 patients with diabetic and hypertensive retinopathy are examined. Retinal vascular caliber was measured using adaptive multifocal fundus camera (AMFC), fundus camera "Topcon" TRS-NW200 and FAG. Combination of retinal vascular caliber measurement and fundus foto using AMFC in patients with ametrop
PMID 21721269

[Influence of incision parameters on astigmatism during implantation of phakic-6-mm-iris-claw intraocular lenses].

Sekundo W, Schneider M, Tietjen A.SourceKlinik für Augenheilkunde, Philipps-Universität, Marburg. sekundo@med.uni-marburg.de
Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft.Ophthalmologe.2004 Mar;101(3):246-50.
BACKGROUND: The implantation of a phakic 6-mm-iris-claw intraocular lens requires a 6.1-6.2 mm incision. This induces a variable amount of corneal astigmatism depending on the location and the type of the incision used. The aim of the current study is to investigate the surgically induced astigmatis
PMID 15004714