retinitis pigmentosa
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Informed consent Best corrected visual acuity
Exclusion criteria
Exclusion criteria: Inability to comply because of immobility, deafness, mental retardation etc. Retinal pathology other than RP (e.g. diabetic retinopathy, fundus abnormalities resembling RP) Coexisting ocular pathology (e.g. amblyopia, glaucoma) Media opacities other than cataract or degenerative vitreous opacities (e.g. cornea pathology, posterior capsule opacification) Straylight Estimated Standard Deviation > 0.1 Implanted intraocular lens with blue light filter Visual field
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Prevalence of disability glare in patients with RP, expressed as the straylight value (s), and the relative contributions of optical and retinal factors. | — |
Secondary
| Measure | Time frame |
|---|---|
| Identification of the origin of disability glare in RP patients, i.e. optical and/or retinal factors, and their relative contributions Establishing the clinical value of the straylight parameter to predict the effect of (early) cataract surgery in RP patients | — |
Countries
Netherlands