Comparison of chord length and scleral arc length when placing sutures for episcleral exoplants

John T. Thompson, Ronald G. Michels

Research output: Contribution to journalArticle

Abstract

We derived a formula to compare the chord length and scleral arc length, when using calipers to measure the distance for suture placement, during retinal reattachment surgery. The scleral arc length is slightly longer than the chord length (caliper setting). The difference is 0.16 mm (2.0%) for an 8mm caliper setting, 0.31 mm (3.1%) for a 10 mm setting, and 0.74 mm (5.7%) for a 13 mm setting. The difference in the chord and arc length is small, but the surgeon can select a slightly reduced caliper setting, if more precise estimation of the arc length is desired.

Original languageEnglish (US)
Pages (from-to)225-226
Number of pages2
JournalRetina
Volume5
Issue number4
DOIs
StatePublished - Jan 1 1985

Keywords

  • Caliper setting
  • Chord length
  • Episcleral exoplant
  • Scleral arc length
  • Scleral sutures

ASJC Scopus subject areas

  • Ophthalmology

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