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Effect of absorptive filters compared to refractive correction on contrast sensitivity among primary open-angle glaucoma patients at Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria.

Effect of absorptive filters compared to refractive correction on contrast sensitivity among primary open-angle glaucoma patients at Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria.

Status
Active, not recruiting
Phases
Early Phase 1
Study type
Interventional
Source
PACTR
Registry ID
PACTR202407520039845
Enrollment
200
Registered
2024-07-18
Start date
2024-06-03
Completion date
Unknown
Last updated
2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Eye Diseases

Interventions

study group
control group

Sponsors

Adelabu Kafayat Omobola
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Glaucoma patients that are 40 years and older and diagnosed more than a year ago. 2. Has primary open-angle glaucoma. 3. Has visual acuity better or equal to logMAR of 1.00 (6/60) in the worse eye. 4. Has a recent (not more than 6 months) central visual field report with reliable indices

Exclusion criteria

Exclusion criteria: 1. The presence of media opacities precluding visualization of the fundus such as corneal pathology, visually significant cataracts (grade 2 or higher lens morphology according to the Lens Opacities Classification System II (LOCS II), the presence of significant posterior capsular opacity, vitreous opacities, and hemorrhages. 2. A history of ophthalmic surgeries (corneal refractive, cataract and vitreoretinal surgeries) that can decrease contrast sensitivity. 3. The presence of macular or retinal disease (age-related macular degeneration and retinal dystrophies) that can decrease contrast sensitivity. 4. Patients on drugs affecting pupillary size (miotic or mydriatic drugs) that can decrease contrast sensitivity. 5. Poor vision precluding the ability to fixate on the desired target. 6. The presence of neurological diseases like Parkinson's disease, and Alzheimer’s disease.

Design outcomes

Primary

MeasureTime frame
Contrast sensitivity score

Secondary

MeasureTime frame
Visual acuity with the desired filters

Countries

Nigeria

Contacts

Public ContactBernice Adegbehingbe

Professor

berniceola2003@yahoo.com+2348037218094

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Sep 19, 2026