Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Three versus four radial keratotomy incisions.

G R Melles1, A T Go, W H Beekhuis

  • 1Eye Hospital, Erasmus University Rotterdam, The Netherlands.

Journal of Cataract and Refractive Surgery
|January 1, 1992
PubMed
Summary

A new three-incision radial keratotomy (RK) pattern achieves 80% of the corneal flattening from a four-incision RK. This offers a potentially more stable surgical option for vision correction.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Concomitant chemotherapy and radiation for the treatment of advanced-stage endometrial cancer.

Gynecologic oncology·2014
Same author

Risk and safety of contact lenses.

The International journal of risk & safety in medicine·2013
Same author

New method for reshaping the cornea.

Journal of biomedical optics·2012
Same author

[The IC3D classification of the corneal dystrophies].

Klinische Monatsblatter fur Augenheilkunde·2011
Same author

Femtosecond laser versus manual dissection for top hat penetrating keratoplasty.

The British journal of ophthalmology·2010
Same author

Long-term changes in corneal endothelial morphology after discontinuation of low gas-permeable contact lens wear.

Cornea·2004

Area of Science:

  • Ophthalmology
  • Corneal Surgery
  • Refractive Surgery

Background:

  • Radial keratotomy (RK) is a refractive surgical procedure to correct myopia.
  • Traditional RK involves four or eight semi-radial incisions.
  • The stability and efficacy of alternative RK patterns require investigation.

Purpose of the Study:

  • To evaluate the efficacy and stability of a three-incision radial keratotomy (RK) pattern.
  • To compare the refractive outcomes of a three-incision RK pattern versus a standard four-incision RK pattern.

Main Methods:

  • Sixteen human donor eyes were used, with one eye from each pair randomly assigned to either a three-incision or four-incision RK pattern.
  • Incisions were made using a diamond blade to 90% of central pachymetry within a 3.5 mm optical clear zone.

Related Experiment Videos

  • Intraocular pressure was maintained at 15 mm Hg during surgery and keratometry measurements.

    • Main Results:

    • The four-incision RK resulted in significantly greater corneal flattening (6.08 D) compared to the three-incision RK (4.84 D).
    • Astigmatism increase was not significantly different between the three-incision (0.69 D) and four-incision (0.44 D) groups.
    • Histological analysis showed no significant difference in mean incision depth between the two groups.

    Conclusions:

    • A three-incision RK pattern can achieve approximately 80% of the refractive effect of a four-incision pattern.
    • The three-incision RK pattern may offer a theoretically more stable alternative while providing substantial corneal flattening.
    • Further research is warranted to assess the long-term clinical outcomes and stability of the three-incision RK pattern.