Assessment of Near Vision Capacity in Different Light Intensities

Completed

• Conditions: Presbyopia

• Registration Number: NCT03024073
• Lead Sponsor: Democritus University of Thrace

Brief Summary

Patients who underwent presbyopic correction with bilateral bifocal intraocular lenses implantation are supposed to have sufficient uncorrected vision capacity for activities of daily living (ADLs) that require near vision acuity (NV), (ie. book reading). However, it is known that light intensity and temperature has a great impact on near vision capacity. Primary objective of this study is to identify the optimal task lighting conditions (in terms of light intensity and temperature) for ADLs that demand near vision acuity for a sample oa patients who underwent presbyopic correction with bilateral bifocal intraocular lenses implantation

Detailed Description

Not available

Study Timeline

• Study Start: 2017-01
• Study First Submitted: 2017-01-14
• Study First Submitted QC: 2017-01-17
• Study First Posted: 2017-01-18
• Primary Completion: 2018-04
• Study Completion: 2018-06
• Status Verified: 2019-07
• Last Update Submitted: 2019-07-24
• Last Update Posted: 2019-07-25

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

• Presbyopia

Exclusion Criteria

• Glaucoma
• Corneal pathology
• Fundus pathology
• Severe neurological/mental diseases that interfere with visual acuity

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Uncorrected Near Vision Acuity (UnVA)	6 months	Near Vision Acuity

Secondary Outcome Measures

Name	Time	Method
Near Vision Capacity (NVC)	6 months	NVC score will be measured by the performance score in the following ADLs: a) cellular phone directory entry search, b) reading of message in a cellular phone, c) reading a medical prescription, d) reading a public phonebook

Trial Locations

Locations (1)

Democritus University of Thrace; 🇬🇷 Alexandroupolis, Evros, Greece