Development and Validation of a Digital Optotype for Near Vision in Greek Language. (DeDART)

Democritus University of Thrace

Status: Completed

Conditions: Low Vision; Presbyopia; Near Vision

Treatments: Diagnostic Test: MNREAD testing

Study type: Observational

Funder types: Other

Identifiers

NCT04242836

ES3/Th2/27-03-2019

Details and patient eligibility

About

Primary objective of our study is to develop and validate a computer-based digital near-vision optotype based on the Greek version of the print MNREAD.

Full description

Present study aims to develop and validate a computer-based digital near-vision optotype based on the Greek version of the print MNREAD.

Specifically, it aims to evaluate the level of agreement between the conventional printed greek MNREAD chart and the corresponding digital chart, as well as test-retest reliability of the digital optotype.

To address these aims, four reading parameters measured with the print and the digital 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

Exclusion criteria

• dyslexia
• attention-deficiency
• former diagnosis of mental diseases
• former diagnosis of psychiatric diseases

Trial design

100 participants in 2 patient groups

Control group

Description:

1. 70 patients with normal vision (NVG) with adequate literacy of written Greek language 2. 30 patients with low vision (LVG) with adequate literacy of written Greek language These patients are tested on the printed Greek MNREAD

Treatment:

Diagnostic Test: MNREAD testing

Study group

Description:

The same patients as those in the control group (NVG, LVG) are tested on the digital version of the Greek MNREAD (DeDART)

Treatment:

Diagnostic Test: MNREAD testing