Pupil size. Refractive outcome. SEQ. Score of neutral density filter.
Conditions
Interventions
Measurements are made with the Powerrefractor II
software installed of the PlustoptiX A09. Both for the un- and dilated: A entry measurement with and without glasses will be made. Thereafter three measurements will be made with glasses and consecuti
91% (Newport Ltd), 79% (Newport Ltd), 62% (Thorlabs Ltd), 46% (Thorlabs Ltd) and 34% (Thorlabs Ltd).
Sponsors
Medisch Centrum Haaglanden.
Eligibility
Inclusion criteria
Inclusion criteria: Un-dilated pupils: Healthy volunteers, aged 35 to 60 years, having hypermetropia corrected with unifocal glasses, visiting the department Ophthalmology either as a patient or as an accompanying person. Dilated pupils: Healthy volunteers, aged 18 to 60, having hypermetropia, which received cycloplegics.
Exclusion criteria
Exclusion criteria: For both un-dilated and dilated subjects: Cataract and/or vitreous bleeding, and/or abnormal shaped pupils or no oral consent. For un-dilated subjects pupil sizes 7.8mm. For dilated subjects pupil sizes <6mm.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1. Success and failure rates of the consecutive neutral density filters; 2. (Δ) SEQ values. Differences will be considered statistical significant if p0.2 diopters Δ SEQ (1 and 2) will be considered clinical significant. | — |
Contacts
Public ContactH.M. (Ellen) Minderhout, van
Postbus 432
Outcome results
None listed