The objectives of this study are to assess and compare at 6 months 1) the percentage of subjects achieving bilateral uncorrected distance visual acuity and bilateral uncorrected near visual acuity
ID
Source
Brief title
Condition
- Vision disorders
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
bilateral uncorrected distance visual acuity and bilateral uncorrected near
visual acuity <= 0.1 logMar;
Spectacle independence at all distances
Vision-related quality of life
Secondary outcome
Costs of postoperative spectacle correction
Background summary
Currently, the standard of care for subjects with cataract is having cataract
surgical removal by phacoemulsification and implantation of a monofocal
intraocular lens, which neither correct for presbyopia or the eventual
associated corneal astigmatism. Therefore subjects are required to purchase
expensive multifocal glasses to correct for near visual acuity and residual
astigmatic error postoperatively.
The objectives of this study are to assess and compare at 6 months 1) the
percentage of subjects achieving bilateral uncorrected distance visual acuity
and bilateral uncorrected near visual acuity <= 0.1 logMar; 2) spectacle
independence at all distances and 3) subject vision-related quality of life
post bilateral implantation of multifocal AcrySof ReSTOR IOLs and Monofocal
IOLs. Secondary outcomes will include cost of eyeglass purchased.
Study objective
The objectives of this study are to assess and compare at 6 months 1) the
percentage of subjects achieving bilateral uncorrected distance visual acuity
and bilateral uncorrected near visual acuity <= 0.1 logMar; 2) spectacle
independence at all distances and 3) subject vision-related quality of life
post bilateral implantation of multifocal AcrySof ReSTOR IOLs and Monofocal
IOLs.
Study design
This study is a postmarket, subject and observer-technician masked, comparative
trial involving the treatment of presbyopia and astigmatism at the time of
cataract surgery and assessment of postoperative resource utilization.
Patients will not know which lenses are being implanted into their eyes. The
study doctor will know which lens the patient receives and he/she will also
determine on which eye surgery will be done on first.
Intervention
There are 2 groups of subjects:
Group 1 will receive commercially available, CE marked, AcrySof ReSTOR IOL
models (SN6AD1 and SND1T2 through SND1T5)
Group 2 will receive Monofocal IOLs (commercially available, CE marked standard
Monofocal IOL used in clinical practice)
Study burden and risks
If patients participate they shall have additional visits to the clinic and
visits may take longer than if they would not participate in this study.
All IOLs in the study are intended to improve distance vision improving the
quality of vision far away and may be able to reduce the need for glasses at
distance. The ReSTOR IOL which is a multifocal IOL, patients will have an
increased likelihood of being able to see over a range of distances and may, in
fact, be free of glasses although this cannot be guaranteed. Further, patients
may receive the benefit of information about their health and a chance to be in
a research study that may help others.
Removal of the natural crystalline lens is a delicate but generally safe
operation. There are no added risks to the operation because of the
participation in the study.
Common side effects may include the need for glasses after surgery for near and
intermediate tasks. Less common side effects may include visual disturbance -
halos and glare around lights under night time conditions and blurred vision.
Rare side effects may include infection, reaction to medications used during
surgery, damage to your cornea, swelling (edema), bleeding, requirement for
secondary eye surgery.
Monofocal IOLs are a fixed focus IOL and this means that they only correct
vision for one distance meaning patients will require glasses in order to
conduct all visual tasks after surgery.
Alcon Laboratories (UK) Ltd
Hilde Viroux,Pentagon Park, Boundary Way, Hemel Hempstead, Herts, HP2 7UD
GB
Alcon Laboratories (UK) Ltd
Hilde Viroux,Pentagon Park, Boundary Way, Hemel Hempstead, Herts, HP2 7UD
GB
Listed location countries
Age
Inclusion criteria
Ocular criteria must be met in both eyes;
>= 21 years of age;
willing and able to attend postoperative examinations as per protocol schedule;
have bilateral, age-related, cataracts;
have planned cataract removal via phacoemulsification with implantation of an IOL;
are available to undergo second eye surgery within 6 weeks of the first eye surgery;
fulfils the recommendations at the *Warnings* and *Precautions* sections of the AcrySof ReSTOR IOL and Monofocal IOL package inserts;
have either no pre-operative corneal astigmatism or pre-operative regular corneal astigmatism <=2.5D;
Both eyes qualify for either AcrySof ReSTOR IOL model SN6AD1 or AcrySof ReSTOR Toric IOLs models SND1T2-SND1T5 on the AcrySof IOL online calculator provide by the sponsor, as described at session 9.2.1 of the protocol 09dec2010.
Exclusion criteria
If any of the following exclusion criteria are applicable to either eye, the subject shall not be enrolled in the study;
previous corneal surgery and/or reshaping;
abnormality, disease and/or conditions of the cornea (i.e. keratoconus, corneal dystrophy, severe keratitis, corneal scar, etc.), which would clinically contra-indicate the implantation of a toric intraocular lens;
planned multiple procedures during cataract/IOL implantation surgery;
planned limbal relaxing incision (LRI), Excimer laser treatment or similar procedure prior to or during the course of the study;
Design
Recruitment
Medical products/devices used
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 |
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CCMO | NL35407.075.11 |