Related Experiment Video
Updated: May 25, 2026
05:14
Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
Published on: September 16, 2025
Visual function comparison of 2 aspheric multifocal intraocular lenses
José F Alfonso1, Luis Fernández-Vega, José I Blázquez
1Fernández-Vega Ophthalmological Institute, Surgery Department, School of Medicine, University of Oviedo, Oviedo, Spain. j.alfonso@fernandez-vega.com
Journal of Cataract and Refractive Surgery
|February 11, 2012
Summary
The hybrid aspheric intraocular lens (IOL) demonstrated superior near vision and photopic contrast sensitivity compared to the copolymer aspheric IOL. Both IOLs provided good distance visual acuity.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Optics
Background:
- Intraocular lenses (IOLs) are crucial for restoring vision after cataract surgery.
- Multifocal IOLs aim to provide clear vision at multiple distances.
- Aspheric and hybrid designs are advanced IOL technologies.
Purpose of the Study:
- To compare the visual performance of two multifocal intraocular lenses (IOLs): the copolymer aspheric Lentis Mplus LS-312 and the hybrid aspheric Acrysof Restor SN6AD1 +3.0 D.
- Evaluate differences in corrected distance visual acuity (CDVA), distance-corrected near visual acuity (DCNVA), defocus curve, and contrast sensitivity.
Main Methods:
- A comparative case series was conducted at the Fernández-Vega Ophthalmological Institute.
- Visual function was assessed six months postoperatively.
- Measurements included CDVA, DCNVA, defocus curve, and photopic/mesopic contrast sensitivity with and without glare.
Main Results:
- Both IOLs provided comparable distance visual acuity (CDVA).
- The hybrid aspheric IOL showed significantly better DCNVA (P<.05).
- The hybrid aspheric IOL exhibited superior visual acuity across a range of vergences (-0.00 to -5.00 D) and better photopic contrast sensitivity at higher spatial frequencies (12 and 18 cpd).
Conclusions:
- Both multifocal IOL models offer good distance vision.
- The hybrid aspheric IOL is superior for near vision and photopic contrast sensitivity.
- Intermediate vision was comparable and less effective than distance or near vision for both IOLs.
Related Concept Videos
01:16Focusing of Light in the Eye
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
01:28Angle Closure Glaucoma: Treatment
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
01:27Open Angle Glaucoma: Treatment
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...