Retinoscopy, also known as skiascopy, is an objective method for assessing therefraction of the eye. This method has been used for a long time, both in animalsand human patients. According to the literature, it has been postulated that it is notnecessary to obtain cycloplegia before the examination in lower mammals. Someauthors even mention that it can make the examination more difficult. Therefore itis not recommended.

Skiascopy, also called retinoscopy, is a method for determining the refractive power of the eye. There are only a few, old studies made on equine refraction. The aim of this study was to investigate the refractive power in a population of Swedish horses. The study consists of a review of relevant studies done on animals and an experimental part where the refractive power of 93 horses of different age, breed and usage was examined. A pilot study of 12 horses was performed regarding the importance of cycloplegia when doing skiascopy on horses. The results of the pilot study show no significant difference in the skiascopy results between the group before and after cycloplegia were induced. Consequently, there is no need of inducing cycloplegia before doing skiascopy in adult horses. The study shows that horses usually were emmetropic (normally sighted) with minor deviations toward myopia or hyperopia.

Skiascopy is used to objectively determine the refractive power of the eye. Except for a Swedish study in 2007, where 93 horses of different breeds and ages were examined with respect to their refractive status, most studies on equine refraction were published about one century ago or more. The objective of this study is to examine the refractive status of healthy warm-blooded trotting horses. Skiascopy was performed in 117 horses in total, aged 3 days to approximately 22 years old. In a pilot study, it was determined whether young horses were able to accommodate or not during skiascopy. The horses in the pilot study were all younger than 14 months. In foals younger than 1,5 months we saw a significant difference in the skiascopy result in the right eyes before and after topical atropine was instilled, but not in the left eye.

Bakgrund: Under första levnadsåren kan ett öga utveckla en synnedsättning beroende på att ögats synintryck hindras, amblyopi, vilket drabbar sex procent av alla barn. Amblyopi behandlas genom korrigering av Brytningsfel med glasögon och/eller lappbehandling. Efter sju års ålder är det vanligen svårt att förbättra synen i ett amblyopt öga.  För att barnet ska uppnå optimal synskärpa är det viktigt att vårdgivaren har kunskaper om compliance och att givna ordinationer följs. Syfte: Syftet med studien var att ur ett barn- och föräldraperspektiv belysa faktorer som är av betydelse för compliance vid behandling av barn med amblyopi.