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Clinical Trial Summary

To assess visual performance, refractive outcome, and patient satisfaction with the use of "off the shelf" toric lenses, with a set cylindrical correction of 2.00 or 4.00 diopters, and combined limbal relaxing incisions and/or off-axis intraocular lens rotation, compared to fully targeted toric intraocular lens correction.


Clinical Trial Description

The aim of this study is to evaluate a simplified, more cost-effective procedure for the use of toric intraocular lenses, with a focus on suitability for NHS cataract surgery. This study will involve the use of standard, "off-the-shelf" toric lenses rather than having them specifically tailored and ordered for each individual patient. Eligible participants (>1.25 D of corneal astigmatism) will be randomised, receiving a toric IOL with either a 2.00 or 4.00 diopter (D) correction, depending on the degree of pre-operative astigmatism, or a toric IOL individually tailored to and ordered for each patients' precise degree of corneal astigmatism. With the "off the shelf" toric IOL group the correction of the astigmatic refractive error will be refined with the use of adjunctive limbal relaxing incisions LRIs and/or off axis rotation of the toric IOL (based on a standardized protocol) so the full amount of corneal astigmatism can be targeted for correction for each patient. The clinical outcome will then be measured and compared between the 2 groups. Independent safety monitoring will be performed. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04122651
Study type Interventional
Source Guy's and St Thomas' NHS Foundation Trust
Contact Khayam Naderi, MBBS BSc MA
Phone 020 7188 7188
Email khayam.naderi@gstt.nhs.uk
Status Not yet recruiting
Phase N/A
Start date October 14, 2019
Completion date August 2020

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