Comparison of white-to-white measurements using four devices and their determination of ICL sizing

Comparison of white-to-white measurements using four devices and their determination of ICL sizing

Background To compare the measurements obtained from the Orbscan II, IOLMaster 700, Pentacam AXL, and Castroviejo caliper and their effects on calculating the recommended implantable collamer lens (ICL) size and postoperative vault measurements. Methods This is a retrospective cross-sectional study...

Full description

Saved in:
Bibliographic Details
Published in:Eye and vision (Novato, Calif.) Vol. 9; no. 1; pp. 1 - 36
Main Authors: Ang, Robert Edward T, Reyes, Edward Kenneth F, Ayuyao, Fernando Amado J, Umali, Maria Isabel N, Cruz, Emerson M
Format: Journal Article
Language:English
Published: London BioMed Central Ltd 02-10-2022
BioMed Central
BMC
Subjects:
Accuracy
Analysis
Astigmatism
Automation
Biometrics
Caliper
Cornea
Eye surgery
Eyewear industry
FDA approval
ICL vault
Implants, Artificial
IOLMaster 700
Iris
Lasers
Medical records
Medical research
Medicine, Experimental
Orbscan II
Pentacam AXL
Prosthesis
Software
Surgeons
Tomography
Topography
United States
Germany
United States > US
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Background To compare the measurements obtained from the Orbscan II, IOLMaster 700, Pentacam AXL, and Castroviejo caliper and their effects on calculating the recommended implantable collamer lens (ICL) size and postoperative vault measurements. Methods This is a retrospective cross-sectional study of patients who underwent ICL surgery by a single surgeon from March 1, 2018 to July 31, 2021. Records were reviewed for the anterior chamber depth (ACD) and white-to-white (WTW) measurements obtained from the Orbscan II, IOLMaster 700, Pentacam AXL, and Castroviejo caliper (WTW only). These were used to calculate the recommended ICL size. The actual ICL size implanted, and vault measurements obtained one month postoperatively were also collected. Results One hundred seven eyes with a mean age of 27.9 [+ or -] 7.7 years were included in the study. Mean WTW measurements were significantly different between devices (P < 0.0001), with the IOLMaster 700 having the highest value (12.14 [+ or -] 0.04 mm) and the caliper having the lowest value (11.45 [+ or -] 0.04 mm). Mean ACD measurements were the lowest in Orbscan II (3.12 [+ or -] 0.25 mm) and the highest in Pentacam AXL (3.16 [+ or -] 0.24 mm). The Pentacam AXL produced an ICL size similar to the Orbscan in 69.2% of eyes. The IOLMaster yielded an ICL measurement one size larger than Orbscan-based calculations in 64.5% of eyes. Using the Orbscan WTW and ACD, the desired vault of 0.25 to 0.75 mm and 0.25 to 1.00 mm was achieved in 70% and 91% of eyes, respectively. Substituting caliper WTW to IOLMaster 700 or Pentacam AXL WTW increases the percentage of achieving the desired vault to 80%, similar to the Orbscan. Conclusions The Orbscan II, IOLMaster 700, and Pentacam AXL cannot be used interchangeably for calculating ICL sizing. Combining the WTW from caliper measurement with the ACD of the IOLMaster 700 or Pentacam AXL could improve ICL sizing and achieve a higher percentage of eyes with the desired vault. Keywords: ICL vault, Orbscan II, IOLMaster 700, Pentacam AXL, Caliper
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:2326-0254
2326-0246
2326-0254
DOI:10.1186/s40662-022-00308-z