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Measured and predicted anterior chamber depth for transscleral suture-fixated posterior chamber intraocular lenses.
- Source :
-
Ophthalmic surgery [Ophthalmic Surg] 1993 Jan; Vol. 24 (1), pp. 28-30. - Publication Year :
- 1993
-
Abstract
- Variables in intraocular lens (IOL) power calculations include axial length, average dioptric power of the cornea, and an assumed pseudophakic anterior chamber depth (ACD). In the case of transscleral suture-fixated posterior chamber (PC) IOLs, ACD depends on the placement of the suture and thus might be expected to vary more than it does in eyes with capsular-fixated IOLs. To assess the degree of this variation, we determined the postoperative pseudophakic ACD using A-scan ultrasonography in 15 patients with transscleral suture-fixated PC-IOLs. The mean pseudophakic ACD (posterior corneal vertex to anterior pseudophakos) was 3.47 +/- 0.69 mm. The mean absolute discrepancies in ACD between these measured values and those predicted by the original Binkhorst and the most recent Holladay formulas were 0.579 +/- 0.513 mm and 0.639 +/- 0.519 mm, respectively. In 11 of 15 eyes, the measured ACD was within 1 mm of that predicted by either the Binkhorst or Holladay formula, suggesting that either will provide reasonable estimates of ACD for IOL power calculations for suture-fixated PC-IOLs.
Details
- Language :
- English
- ISSN :
- 0022-023X
- Volume :
- 24
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Ophthalmic surgery
- Publication Type :
- Academic Journal
- Accession number :
- 8446329