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Related Concept Videos

Ophthalmic Drug Delivery Systems01:23

Ophthalmic Drug Delivery Systems

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Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...
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Phacoemulsification without hydrodissection: Semi-crater and split technique.

Mitsutaka Soda1, Shigeo Yaguchi1

  • 1From the Department of Ophthalmology (Soda), Showa University School of Medicine, Fujigaoka Rehabilitation Hospital, Yokohama, Kanagawa, and the Department of Ophthalmology (Yaguchi), Showa University School of Medicine, Shinagawa, Tokyo, Japan.

Journal of Cataract and Refractive Surgery
|June 21, 2015
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Summary
This summary is machine-generated.

This study introduces a novel semi-crater sculpting and split technique for cataract surgery, enabling hydrodissection-free phacoemulsification. This method simplifies nucleus removal, enhancing safety and stability for surgeons of all experience levels.

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Area of Science:

  • Ophthalmology
  • Surgical Techniques

Background:

  • Cataract surgery often involves hydrodissection, which carries risks like posterior capsule rupture.
  • The financial or proprietary interests of the authors are not disclosed in this study.

Purpose of the Study:

  • To present a novel semi-crater sculpting and split technique for cataract nucleus removal.
  • To demonstrate a hydrodissection-free phacoemulsification method.
  • To evaluate the safety and efficacy of this technique in a large patient cohort.

Main Methods:

  • A semi-crater sculpting technique is employed, emulsifying half the nucleus before rotation.
  • The remaining nucleus is rotated and emulsified, creating adequate space without hydrodissection.
  • Phacoemulsification is performed using this technique.

Main Results:

  • The technique was successfully used in 19,198 eyes between 2000 and 2013.
  • Stable phacoemulsification was achieved, irrespective of surgeon experience.
  • The method effectively prevented hydrodissection-related complications, including posterior capsule rupture.

Conclusions:

  • The semi-crater sculpting and split technique offers a safe and stable approach to hydrodissection-free phacoemulsification.
  • This technique reduces stress on the zonule and mitigates risks associated with intraocular pressure fluctuations.
  • It is a valuable alternative for routine cataract nucleus removal.