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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...
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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...
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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Related Experiment Video

Updated: Mar 15, 2026

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
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Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation

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[Special Intraocular Lenses in Refractive Lens Surgery].

A Liekfeld1, D Befurt1

  • 1Klinik für Augenheilkunde, Klinikum Ernst von Bergmann gGmbH, Potsdam.

Klinische Monatsblatter Fur Augenheilkunde
|August 26, 2016
PubMed
Summary

Special intraocular lenses (IOL) offer options for refractive surgery patients seeking less dependence on glasses. Careful selection of toric and multifocal IOL, considering individual needs, is crucial for optimal outcomes.

Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Biomedical Engineering

Background:

  • Advancements in intraocular lens (IOL) technology offer solutions for refractive errors.
  • Specialty IOLs, including toric and multifocal types, cater to specific patient needs in refractive lens surgery.
  • Patient desire for spectacle independence drives innovation in IOL design.

Purpose of the Study:

  • To evaluate the efficacy and indications for various special intraocular lenses (IOL) in refractive surgery.
  • To guide the selection of appropriate IOLs for achieving patient independence from glasses.
  • To review the conditions necessary for satisfactory outcomes with toric and multifocal IOLs.

Main Methods:

  • Comprehensive review of published studies on special IOLs.

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Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
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  • Analysis of in-house clinical experience and data.
  • Comparative evaluation of different IOL models and their optical principles.

    • Main Results:

    • Toric IOLs provide reliable results when specific implantation requirements are met.
    • Multifocal IOLs, while an optical compromise, are effective in achieving spectacle independence.
    • Aspherical IOLs offer benefits only in specific clinical situations; blue-light filtering IOLs are standard, not special.
    • Individualized IOL selection is paramount for achieving satisfying refractive outcomes.

    Conclusions:

    • Specialty IOLs can effectively address a wide range of refractive needs.
    • Surgeons must ensure optimal perioperative conditions and understand IOL principles for informed patient counseling.
    • Appropriate IOL selection and surgical management are key to patient and surgeon satisfaction.