Development and Validation of an Internet-based Near and Intermediate-vision Reading Test (wDDART)

Democritus University of Thrace

Status: Completed

Conditions: Low Vision; Refractive Errors; Presbyopia; Near Vision; Reading

Treatments: Diagnostic Test: DDART Testing; Diagnostic Test: wDDART Testing

Study type: Observational

Funder types: Other

Identifiers

NCT04618224

ES13/Th29/22-10-2020

Details and patient eligibility

About

Primary objective of our study is to develop and validate an internet-based digital near and intermediate-vision reading test in the greek language.

Full description

Present study aims to develop and validate a computer-based digital near-vision reading test (web Democritus Digital Acuity Reading Test - wDDART) based on the validated digital DDART.

Specifically, present study aims to develop a new online reading test (wDDART) based on the corresponding digital DDART reading test for Windows and to evaluate the level of agreement between the two reading tests, as well as test-retest reliability of the online wDDART reading test.

The first part of the study is the development of the online reading test, which will include the following new smart features:

1. Automatic calculation of the reading time of each sentence (each logMAR)
2. Automatic calculation of the basic reading parameters - RA, MRS, CPS, ACC - immediately after the completion of the examination
3. Adjustment of the font size according to the size of the computer screen used for the examination
4. Real time calculation of the patient-screen distance through a face detection system

The second part of this study is the clinical validation of the online wDDART reading test. In this part, four reading parameters measured with the digital and the online version are compared. These parameters are the following:

1. Reading Acuity (RA)
2. Maximum Reading Speed (MRS)
3. Critical Print Size (CPS)
4. Accessibility Index (ACC) All the comparisons take place in two groups: a) a Normal Vision Group (NVG), and b) a Low Vision Group (LVG) in order to estimate the reading capacity in a population with a wide range of vision.

Enrollment: 100 patients

Sex: All

Ages: 18 to 75 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Adequate literacy of written Greek language
• Age between 18 to 75 years

Exclusion criteria

• Dyslexia
• Attention-deficiency
• Former diagnosis of mental and/or psychiatric diseases

Trial design

100 participants in 2 patient groups

Control group

Description:

* 70 patients with normal vision (NVG) with adequate literacy of written Greek language * 30 patients with low vision (LVG) with adequate literacy of written Greek language These patients are tested on the digital reading test DDART.

Treatment:

Diagnostic Test: DDART Testing

Study group

Description:

The same patients as those in the control group (NVG, LVG) are tested on the online version of the Greek digital reading test DDART (wDDART).

Treatment:

Diagnostic Test: wDDART Testing