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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04501172
Other study ID # ES8/Th5/25-06-2020
Secondary ID
Status Completed
Phase
First received
Last updated
Start date June 25, 2020
Est. completion date August 14, 2020

Study information

Verified date September 2020
Source Democritus University of Thrace
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Primary objective of this study is to identify the compliance of Greek people in mask-wearing directive and explore potential associations with refractive errors, spectacles and contact lenses use.


Description:

Present study aims to identify whether Greek people have complied with mask-wearing directive and to investigate the correlation of outcomes with visual acuity - refractive errors, spectacles and contact lenses use. For the purposes of this research, a questionnaire of 20 items including the following sub scales have been developed: a) near vision, b) distance vision, c) ocular discomfort, d) driving, e) limitations, need for help, work collaboration, and emotional impact


Recruitment information / eligibility

Status Completed
Enrollment 1214
Est. completion date August 14, 2020
Est. primary completion date July 24, 2020
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 85 Years
Eligibility Inclusion Criteria:

- Age >18 years old

- Adequate literacy of Greek language

- Permanent residence in Greece

Exclusion Criteria:

- Poor knowledge of Greek language

Study Design


Related Conditions & MeSH terms


Intervention

Behavioral:
Questionnaire completion
Participants are contacted through social networks (Facebook) which provide a link to website that contains the questionnaire. Then, they complete the questionnaire which consists of the following 2 parts: participant's demographic characteristics with questions regarding age, visual acuity - refractive error, spectacles and contact lenses use, and compliance to mask-wearing directives. 20 items that construct 5 subscales: a) near vision (5 items), b) distance vision (3 items), c) ocular discomfort (3 items), d) driving (2 items), e) limitations (3 items), need for help (2 items), work collaboration (1 item), and emotional impact (1 item). The impact of spectacles on the compliance of Greek people to mask-wearing directives will be assessed via this questionnaire.

Locations

Country Name City State
Greece University Hospital of Alexandroupolis Alexandroupolis Evros

Sponsors (1)

Lead Sponsor Collaborator
Democritus University of Thrace

Country where clinical trial is conducted

Greece, 

Outcome

Type Measure Description Time frame Safety issue
Primary Demographic characteristics Gender
Age
Use of spectacles (a. no use, b. for distance, c. for near, d. for distance and near)
Use of contact lenses (a. no use, b. rarely, c. frequently, d. almost always)
Belonging to a vulnerable group (1. No, 2. Yes, 3. I don't know)
Binocular Distance Best Spectacle-Corrected Visual Acuity (if it is known) (1. I don't know, 2. <1/10, 3. 1-3/10, 4. 4-6/10, 5. 7-8/10, 6. 9-10/10)
last 3 months
Primary Compliance to mask-wearing directives Compliance to mask-wearing directives
Yes, always
Yes, almost always
Sometimes
No, almost never
No, never
last 3 months
Primary Questionnaire subscale: Near vision Difficulty in near vision activities (reading a printed document in the workplace or in daily life, reading a document on computer in the workplace or in daily life, reading a message on mobile phone) when using a face mask
No difficulty
Little difficulty
Some difficulty
Great difficulty
I have stopped this activity because of my vision and the use of face mask
I need to remove my face mask
last 3 months
Primary Questionnaire subscale: Distance vision Difficulty in distance vision activities (recognizing people on the opposite sidewalk, reading road and shop signs, crossing roads) when using a face mask
No difficulty
Little difficulty
Some difficulty
Great difficulty
I have stopped this activity because of my vision and the use of face mask
I need to remove my face mask
last 3 months
Primary Questionnaire subscale: Ocular discomfort Ocular discomfort (tearing sensation, stinging sensation, general discomfort) when using a face mask
5-point Likert scale (1 = I absolutely agree / 5 = I absolutely disagree)
last 3 months
Primary Questionnaire subscale: Driving Difficulty in driving (during day or night, in known or unknown places) when using a face mask
No difficulty
Little difficulty
Some difficulty
Great difficulty
I have stopped this activity because of my vision and the use of face mask
I need to remove my face mask
last 3 months
Primary Questionnaire subscale: Limitation Limitation during physical activity, entertainment, social relationships, professional and learning development when using a face mask
5-point Likert scale (1 = I absolutely agree / 5 = I absolutely disagree)
last 3 months
Primary Questionnaire subscale: Collaboration Difficulty in collaboration with colleagues in the workplace when using a face mask
No difficulty
Little difficulty
Some difficulty
Great difficulty
I have stopped this activity because of my vision and the use of face mask
I need to remove my face mask
last 3 months
Primary Questionnaire subscale: Need for help Need for help during shopping (supermarket, grocery store, bakery) or in public services (bank etc) when using a face mask
5-point Likert scale (1 = I absolutely agree / 5 = I absolutely disagree)
last 3 months
Primary Questionnaire subscale: Emotional impact Emotional charge when using a face mask
5-point Likert scale (1 = I absolutely agree / 5 = I absolutely disagree)
last 3 months
Secondary Assessment of the relationship between the compliance to mask-wearing directives and the use of spectacles Chi-squared test will be performed to assess if the compliance to mask-wearing directives is related to the use of spectacles immediately after the completion of data collection
Secondary Assessment of the relationship between the compliance to mask-wearing directives and the other demographic characteristics Chi-squared test will be performed to assess if the compliance to mask-wearing directives is related to the other demographic characteristics immediately after the completion of data collection
Secondary Assessment of the relationship between the compliance to mask-wearing directives and the questionnaire items Chi-squared test will be performed to assess if the compliance to mask-wearing directives is related to the 20 questionnaire items and the corresponding subscales (outcome measures 3-10) immediately after the completion of data collection
Secondary Assessment of the relationship between demographic characteristics and the 20 questionnaire items Chi-squared test will be performed to assess if demographic characteristics are related to the 20 items of the questionnaire and to the corresponding subscales (outcome measures 3-10) immediately after the completion of data collection
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