The Level of Improvement of Visual Acuity in High Corneal Astigmatism with Rigid Gas Permeable Contact Lenses

Autor:	Dalibor Opačić, Snježana Miljak, Ksenija Ćuruvija-Opačić
Jazyk:	angličtina
Rok vydání:	2015
Předmět:	Adult Male Adolescent genetic structures Contact Lenses Visual Acuity Astigmatism Corneal Topography Middle Aged astigmatism RGP contact lenses eye diseases Cornea Refractometry Young Adult Eyeglasses Child Preschool Myopia Humans Female sense organs Child Vision Ocular
Zdroj:	Collegium antropologicum Volume 39 Issue 1
ISSN:	0350-6134 1848-9486
Popis:	The aim of this study was to calculate the level of improvement of visual acuity comparing the best corrected visual acuity (VA) achieved with spectacles with the best corrected VA achieved with rigid gas permeable (RGP) contact lenses in patients with high, simple or compound corneal astigmatism (myopic, hypermetropic and mixed). The investigation of patients included auto-kerato-refractometry, manual keratometry, corneal topography and visual acuity with Snellen chart. The best corrected VA obtained with spectacles was compared with the best corrected VA obtained with RGP contact lenses in 72 patients (116 eyes). All patients showed a signifi cant improvement in visual acuity with RGP lenses from one to seven lines compared to spectacles (p=0.0001). Level of improvement in VA represented as the number of lines obtained was as follows: 74 percent of patients got two to four lines more in VA with RGP lenses compared to spectacles, and almost 10 percent of patients got fi ve to seven lines. RGP contact lenses provide a signifi cant improvement in VA compared to VA reached with spectacles in patients with high corneal astigmatism. The benefi t in VA with RGP lenses is higher as the astigmatism is higher.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::b8a5118878a9191c06b2d313be92dffa https://www.bib.irb.hr/1155137 Zobrazit plný text záznamu