Optimising curve fitting techniques to look for standardisation of the analysis of defocus curves derived from multifocal intraocular lenses.

Introduction: To establish the most appropriate curve fitting method to allow accurate comparison of defocus curves derived from intraocular lenses (IOLs).

Methods: Defocus curves were plotted in five IOL groups (monofocal, extended depth of focus, refractive bifocal, diffractive bifocal and trifocal). Polynomial curves from 2nd to 11th order and cubic splines were fitted.

One-year post-operative comparison of visual function and patient satisfaction with trifocal and extended depth of focus intraocular lenses.

Purpose: To evaluate visual performance with trifocal and extended depth of focus IOL at 1 year post-operatively.

Setting: BMI Southend Hospital.

Design: Cohort study.

Predicting the Postoperative Addition Power of a Multifocal Intraocular Lens at the Spectacle Plane.

Purpose: To establish a simple clinical method of predicting addition power achieved with a multifocal intraocular lens (IOL).

Methods: In this prospective cohort study, 41 patients were bilaterally implanted with the Bi-Flex MY multifocal IOL (Medicontur) with +3.50 diopters (D) near addition power.

Visual function and subjective perception of vision after bilateral implantation of monofocal and multifocal IOLs: a randomized controlled trial.

Purpose: To examine monocular and binocular visual function and patient-reported outcomes after implantation of multifocal IOLs (mIOLs) or monofocal IOLs, using a rigorous series of clinical assessments.

Setting: BMI Southend Hospital, United Kingdom.

Design: Prospective, randomized, double-masked clinical trial.

Clinical outcomes with a new trifocal intraocular lens.

Purpose: To evaluate visual and refractive outcomes, contrast sensitivity, and quality of vision after cataract surgery with the implantation of a new modality of trifocal intraocular lens (IOL).

Methods: This case series comprised 30 patients who had bilateral implantation of the AT.LISA tri 839 MP trifocal IOL after phacoemulsification for either cataract or refractive lens exchange surgery.

Evaluation of intraocular pressure at the end of cataract surgery.

Purpose: To assess the accuracy of estimating intraocular pressure (IOP) at the end of cataract surgery and to suggest a method of verifying this value.

Setting: University hospital in a suburban area.

Methods: Sixty-nine eyes having phacoemulsification cataract surgery without complications were studied.

Functional vision with bilateral ReZoom and ReSTOR intraocular lenses 6 months after cataract surgery.

Purpose: To compare the visual outcomes in patients with bilateral implantation of AcrySof ReSTOR multifocal intraocular lenses (IOLs) (Alcon Laboratories) or ReZoom multifocal IOLs (Advanced Medical Optics) 6 months after cataract surgery.

Setting: Orsett and Southend Hospital, Essex, United Kingdom.

Methods: This study comprised patients who had uneventful bilateral cataract extraction with implantation of ReZoom (n = 50) or ReSTOR (n = 50) multifocal IOLs.