Assessment of Near Vision Capacity in Different Light Intensities

Democritus University of Thrace50 enrolled

Overview

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

Study Type

OBSERVATIONAL

Enrollment

Conditions

Presbyopia

Interventions

BB-PhacoPROCEDURE

Phacoemulsification with bilateral bifocal lenses implantation

Eligibility

Sex: ALLMin age: 45 YearsMax age: 65 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Presbyopia Exclusion Criteria: * Glaucoma * Corneal pathology * Fundus pathology * Severe neurological/mental diseases that interfere with visual acuity

Locations (1)

Democritus University of Thrace

Alexandroupoli, Evros, Greece

Outcomes

Primary Outcomes

Uncorrected Near Vision Acuity (UnVA)

Near Vision Acuity

Time frame: 6 months

Secondary Outcomes

Near Vision Capacity (NVC)

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

Time frame: 6 months

Data from ClinicalTrials.gov

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