Preferential visual acuity test cabin

Abstract

The present invention relates to a cabin (10) used to quantify visual acuity independently of the verbal information given by the patient (pc) using the 'Teller' technique in environments such as doctor's surgeries and clinics by professional specialists. Said cabin (10) is made up of a modular structure (20) consisting of an isolated environment (AS) for the patient (pc) to take the preferential acuity test by reading 'Teller' cards (CT) arranged in a viewing area (21a) provided in the central portion of the moveable wall (21) that is arranged to slide on casters (rd) on rails (30) and (31) installed on the floor (22) and ceiling (25) supported by profiles (25a). The entire modular structure (20) is matte white and has dedicated lighting (IL) controlled and adjusted as a function of the test. A seat (28) is installed in front of the moveable wall (21) coplanar with the rear wall (24) of the cabin (10) for use by the patient (pc) and helper where applicable. Sliding the moveable wall (21) adjusts the distance (d1) between the patient (pc) and the viewing area (21a) of the cards (CT), wherein the minimum distance is 38 cm and the maximum distance is 84.55 cm, with an accuracy appropriate for the effectiveness of the test according to the characteristics of the patient (pc).

Description

technical field [0001] The patent for this invention relates to a preferential fixation visual acuity test chamber for quantifying visual acuity regardless of verbal information provided by the subject, more precisely, a test chamber using the "Teller" technique cabin; the visual acuity testing cabin was developed for environments such as outpatient departments and clinics, and must be used by professionals; it should be noted that the structure of the cabin is conducive to improving the accuracy of diagnosis, because it has a sliding A movable bulkhead through which the relative distance between the "Teller" visual acuity card and the subject in the cabin can be adjusted according to each subject's characteristics and test specifications. The internal environment of the cabin does not have any visual factors that can distract the subject's attention, thereby greatly improving the accuracy, reliability and repeatability of the priority fixation visual acuity test. Background...

AI Technical Summary

Problems solved by technology

[0007] Facts have shown that in order to conduct the test smoothly, the tester must hold the card in front of himself with both hands until it is level with the eyes of the person being tested, and align his eyes with the peephole on the card, but doing so will cause the card to become unstable

[0008] Another disadvantage of the current use of the "Teller" visual acuity card to test visual acuity is external interference, for example, the tester's hand holding the card, the subject may stare at the tester's hand instead of staring Seeing with contrasting fringes, making it difficult for the tester to make an accurate diagnosis in the priority fixation visual acuity test

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