Formiddag

Mens du holder weekend, holder vi øje med alt det, der sker. Direkte fra Banegårdspladsen binder vi sløjfe på ugen, der gik, og griber de historier, d

Den norske ulven Bersicker – Puha

Ole Kristensen (@olekristensendk.bsky.social)

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Inflationen i USA holder sig i ro i juli

En ny spørgeundersøgelse viser, at 34 procent af danskerne mener, det burde være lovligt for personer med jagttegn at skyde ulven.

Ulv på gjennomreise - VGTV

En ulv ble sett på Oppsal i Oslo som ligger ved Østmarka hvor det er et ulverevir.

Measuring visually guided motor performance in ultra low vision using virtual reality

IntroductionUltra low vision (ULV) refers to profound visual impairment where an individual cannot read even the top line of letters on an ETDRS chart from a distance of 0.5 m. There are limited tools available to assess visual ability in ULV. The aim of this study was to develop and calibrate a new performance test, Wilmer VRH, to assess hand-eye coordination in individuals with ULV.MethodsA set of 55 activities was developed for presentation in a virtual reality (VR) headset. Activities were grouped into 2-step and 5-step items. Participants performed a range of tasks involving reaching and grasping, stacking, sorting, pointing, throwing, and cutting. Data were collected from 20 healthy volunteers under normal vision (NV) and simulated ULV (sULV) conditions, and from 33 participants with ULV. Data were analyzed using the method of successive dichotomizations (MSD), a polytomous Rasch model, to estimate item (difficulty) and person (ability) measures. MSD was applied separately to 2-step and 5-step performance data, then merged to a single equal interval scale.ResultsThe mean ±SD of completion rates were 98.6 ± 1.8%, 78.2 ± 12.5% and 61.1 ±34.2% for NV, sULV and ULV, respectively. Item measures ranged from −1.09 to 5.7 logits and − 4.3 to 4.08 logits and person measures ranged from −0.03 to 4.2 logits and −3.5 to 5.2 logits in sULV and ULV groups, respectively. Ninety percent of item infits were within the desired range of [0.5,1.5], and 97% of person infits were within t...