Assess raytracing algorithms in determining the refractive properties of the eye. This method is also applied to cataract patients and, therefore, a secondary objective is to determine the effects of surgical incisions on ocular refractive…
ID
Source
Brief title
Condition
- Ocular structural change, deposit and degeneration NEC
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
Refractive error of the eye, corneal aberrations (both lower and higher order)
Secondary outcome
Effect of surgery on corneal refractive properties.
Background summary
In cataract surgery, IOL power is predicted based on biometric measurements of
the eye. Current methods for determining IOL power in cataract surgery result
in 45% of patients having an absolute refractive error greater than 0.5 diopter
(D) after surgery. With improvements in the accuracy of biometric measurements,
raytracing algorithms to determine IOL power has the potential to improve
refractive outcomes after surgery.
Study objective
Assess raytracing algorithms in determining the refractive properties of the
eye. This method is also applied to cataract patients and, therefore, a
secondary objective is to determine the effects of surgical incisions on ocular
refractive properties.
Study design
Observational study.
Study burden and risks
This a non-invasive study. Risks are negligible and burden is low. Total time
required for excusively study related assessments in the cataract group (2
extra visits) is 4 X 30 = 120 min. Measurements in the normal subjects group
require a single visit of 1 hour.
Measurements for group 4 (taking 1 hour) will be performed only once, in
combination with a regular control visit.
Schiedamse Vest 180
Rotterdam 3011BH
NL
Schiedamse Vest 180
Rotterdam 3011BH
NL
Listed location countries
Age
Inclusion criteria
Informed consent.
Age >= 18 years.
Only people with a healthy cornea will take part in the study.
Exclusion criteria
Patients experiencing complications during surgery will be excluded from the study.
Design
Recruitment
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| CCMO | NL37407.078.11 |