MYAGKIKH, Aleksandr Ivanovich,МЯГКИХ, Александр Иванович
申请号：
RURU2014/000388
公开号：
WO2015/183124A1
申请日:
2014.05.27
申请国别(地区):
WO
年份:
2015
代理人:
摘要：
The invention relates to the field of medicine, and more specifically to ophthalmology. The technical aim consists in increasing the accuracy of determining the visual acuity of patients who simulate higher (for instance, when applying for a job) or lower (for instance, when registering a disability) visual acuity. The technical aim is achieved by means of a method for determining visual acuity which involves showing to a patient test symbols on a display, the size of which symbols is adjusted gradually over a wide dynamic range. As the size of the optotypes is adjusted, the orientation of said optotypes is periodically changed or certain optotypes are replaced with other optotypes of the same size. Visual acuity is determined on the basis of computing an angle at which an optotype of a minimum distinguishable size can be seen, and a visual acuity value is registered and recorded. This procedure is repeated a number of times, a mean value is determined for the obtained visual acuity data, a relative standard deviation is calculated and if the value thereof exceeds 5%, it is concluded that the measurements performed were not sufficiently accurate and/or that the patient was simulating and that measures must be taken to correct the test conditions and/or to eliminate patient simulation by requiring a repetition of the test.Linvention se rapporte au domaine de la médecine et, plus précisément, de lophtalmologie. Le but de linvention est daccroître la précision de mesure de lacuité visuelle chez des patients simulant une acuité visuelle accrue (par exemple pour accepter un travail) ou réduite (par exemple pour être inapte au travail). Le résultat technique est atteint grâce à un procédé de détermination de lacuité visuelle qui consiste à présenter au patient des symboles de test affichés sur un écran et dont la taille est modifiée avec une discrétion élevée dans une grande plage dynamique lors du processus de modification de la taille des optotypes, on modifie périodiq
