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Related Concept Videos

Focusing of Light in the Eye01:16

Focusing 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...
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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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Related Experiment Video

Updated: Jun 26, 2026

Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher
05:14

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Published on: February 23, 2018

Lens refilling to restore accommodation.

Yutaro Nishi1, Kamiar Mireskandari, Peng Khaw

  • 1Ocular Repair and Regeneration Biology Research Unit, UCL Institute of Ophthalmology, London, United Kingdom.

Journal of Cataract and Refractive Surgery
|February 3, 2009
PubMed
Summary
This summary is machine-generated.

Restoring accommodation after cataract surgery is possible with injectable lens refilling. New simplified methods show promise, overcoming past challenges like material leakage and after-cataract formation.

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Area of Science:

  • Ophthalmology
  • Biomaterials Science
  • Regenerative Medicine

Background:

  • Cataract surgery aims to restore distance vision and accommodation.
  • Restoring accommodation, the eye's ability to change focus, remains a challenge.
  • Injectable lens refilling offers a potential solution for accommodation restoration.

Purpose of the Study:

  • To summarize current lens refilling methods for accommodation restoration.
  • To identify remaining obstacles for clinical application of these techniques.

Main Methods:

  • Review of existing literature on lens refilling for cataract surgery.
  • Analysis of challenges including material leakage and after-cataract formation.
  • Evaluation of recent advancements in simplified and reproducible procedures.

Main Results:

  • Past lens refilling attempts were hindered by material leakage and opacification.
  • Recent developments have introduced simplified and reproducible lens refilling techniques.
  • These new methods hold potential for restoring accommodation post-surgery.

Conclusions:

  • Lens refilling is a promising strategy for restoring accommodation after cataract surgery.
  • Overcoming leakage and after-cataract formation are key to successful implementation.
  • Further research and development are needed to address remaining clinical obstacles.