Rotational Stability and Centration of a New Toric Lens Design Platform Using Objective Image Analysis Over 6 Months

Gurpreet Kaur Bhogal-Bhamra*, James S. Wolffsohn, Amy L Sheppard

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

PURPOSE: To determine the rotational stability of the Rayner
600S intraocular lens (IOL) (Rayner, Worthing, United Kingdom)
using objective image analysis techniques.
METHODS: A total of 66 patients (mean age: 69.92 ± 8.45 years)
with healthy eyes presenting for routine cataract surgery were
implanted monocularly with the 600S IOL and followed up over
90 to 180 days postoperatively. Images of the IOL were captured
through a maximally dilated pupil (tropicamide 1.0%, phenylephrine
2.5%) immediately after surgery and after 1 to 3 days,
30 days, and 90 to 180 days using a digital slit-lamp biomicroscope.
The orientation of the IOL markings were image analyzed
compared to conjunctival blood vessel landmarks visible across
all time points to correct for head and rotation. Centration was
assessed by drawing ovals to circumscribe the IOL, pupil, and
limbus to compare the centers (0.01 mm per-pixel resolution).
RESULTS: Absolute values for rotation postoperatively were
1.60° ± 1.13° at 1 to 3 days, 1.58° ± 1.36° at 30 days, and 1.83°
± 1.44° at 90 to 180 days. No lens rotated more than 5°. The
average centration relative to the limbus was -0.04 ± 0.25 mm
horizontally and 0.04 ± 0.26 mm vertically at 1 to 3 days, 0.00 ±
0.38 mm vertically and 0.01 ± 0.28 mm horizontally at 30 days,
and 0.08 ± 0.37 mm vertically and 0.07 ± 0.47 mm horizontally
at 90 to 180 days.
CONCLUSIONS: The Rayner 600S IOL showed exceptional
rotational stability and centration after implantation, meeting
the U.S. Food and Drug Administration prescribed
American National Standards Institute standards for toric
IOLs.
Original languageEnglish
Pages (from-to)48-53
Number of pages6
JournalJournal of Refractive Surgery
Volume35
Issue number1
DOIs
Publication statusPublished - 14 Jan 2019

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Intraocular Lenses
Lenses
Pupil
Tropicamide
United States Food and Drug Administration
Cataract
Blood Vessels
Head

Keywords

  • intraocular lens
  • cataracts

Cite this

@article{25433e9b48cb4919996a13637a20aa69,
title = "Rotational Stability and Centration of a New Toric Lens Design Platform Using Objective Image Analysis Over 6 Months",
abstract = "PURPOSE: To determine the rotational stability of the Rayner600S intraocular lens (IOL) (Rayner, Worthing, United Kingdom)using objective image analysis techniques.METHODS: A total of 66 patients (mean age: 69.92 ± 8.45 years)with healthy eyes presenting for routine cataract surgery wereimplanted monocularly with the 600S IOL and followed up over90 to 180 days postoperatively. Images of the IOL were capturedthrough a maximally dilated pupil (tropicamide 1.0{\%}, phenylephrine2.5{\%}) immediately after surgery and after 1 to 3 days,30 days, and 90 to 180 days using a digital slit-lamp biomicroscope.The orientation of the IOL markings were image analyzedcompared to conjunctival blood vessel landmarks visible acrossall time points to correct for head and rotation. Centration wasassessed by drawing ovals to circumscribe the IOL, pupil, andlimbus to compare the centers (0.01 mm per-pixel resolution).RESULTS: Absolute values for rotation postoperatively were1.60° ± 1.13° at 1 to 3 days, 1.58° ± 1.36° at 30 days, and 1.83°± 1.44° at 90 to 180 days. No lens rotated more than 5°. Theaverage centration relative to the limbus was -0.04 ± 0.25 mmhorizontally and 0.04 ± 0.26 mm vertically at 1 to 3 days, 0.00 ±0.38 mm vertically and 0.01 ± 0.28 mm horizontally at 30 days,and 0.08 ± 0.37 mm vertically and 0.07 ± 0.47 mm horizontallyat 90 to 180 days.CONCLUSIONS: The Rayner 600S IOL showed exceptionalrotational stability and centration after implantation, meetingthe U.S. Food and Drug Administration prescribedAmerican National Standards Institute standards for toricIOLs.",
keywords = "intraocular lens, cataracts",
author = "Bhogal-Bhamra, {Gurpreet Kaur} and Wolffsohn, {James S.} and Sheppard, {Amy L}",
year = "2019",
month = "1",
day = "14",
doi = "10.3928/1081597X-20181204-01",
language = "English",
volume = "35",
pages = "48--53",
journal = "Journal of Refractive Surgery",
issn = "1081-597X",
publisher = "Slack Incorporated",
number = "1",

}

TY - JOUR

T1 - Rotational Stability and Centration of a New Toric Lens Design Platform Using Objective Image Analysis Over 6 Months

AU - Bhogal-Bhamra, Gurpreet Kaur

AU - Wolffsohn, James S.

AU - Sheppard, Amy L

PY - 2019/1/14

Y1 - 2019/1/14

N2 - PURPOSE: To determine the rotational stability of the Rayner600S intraocular lens (IOL) (Rayner, Worthing, United Kingdom)using objective image analysis techniques.METHODS: A total of 66 patients (mean age: 69.92 ± 8.45 years)with healthy eyes presenting for routine cataract surgery wereimplanted monocularly with the 600S IOL and followed up over90 to 180 days postoperatively. Images of the IOL were capturedthrough a maximally dilated pupil (tropicamide 1.0%, phenylephrine2.5%) immediately after surgery and after 1 to 3 days,30 days, and 90 to 180 days using a digital slit-lamp biomicroscope.The orientation of the IOL markings were image analyzedcompared to conjunctival blood vessel landmarks visible acrossall time points to correct for head and rotation. Centration wasassessed by drawing ovals to circumscribe the IOL, pupil, andlimbus to compare the centers (0.01 mm per-pixel resolution).RESULTS: Absolute values for rotation postoperatively were1.60° ± 1.13° at 1 to 3 days, 1.58° ± 1.36° at 30 days, and 1.83°± 1.44° at 90 to 180 days. No lens rotated more than 5°. Theaverage centration relative to the limbus was -0.04 ± 0.25 mmhorizontally and 0.04 ± 0.26 mm vertically at 1 to 3 days, 0.00 ±0.38 mm vertically and 0.01 ± 0.28 mm horizontally at 30 days,and 0.08 ± 0.37 mm vertically and 0.07 ± 0.47 mm horizontallyat 90 to 180 days.CONCLUSIONS: The Rayner 600S IOL showed exceptionalrotational stability and centration after implantation, meetingthe U.S. Food and Drug Administration prescribedAmerican National Standards Institute standards for toricIOLs.

AB - PURPOSE: To determine the rotational stability of the Rayner600S intraocular lens (IOL) (Rayner, Worthing, United Kingdom)using objective image analysis techniques.METHODS: A total of 66 patients (mean age: 69.92 ± 8.45 years)with healthy eyes presenting for routine cataract surgery wereimplanted monocularly with the 600S IOL and followed up over90 to 180 days postoperatively. Images of the IOL were capturedthrough a maximally dilated pupil (tropicamide 1.0%, phenylephrine2.5%) immediately after surgery and after 1 to 3 days,30 days, and 90 to 180 days using a digital slit-lamp biomicroscope.The orientation of the IOL markings were image analyzedcompared to conjunctival blood vessel landmarks visible acrossall time points to correct for head and rotation. Centration wasassessed by drawing ovals to circumscribe the IOL, pupil, andlimbus to compare the centers (0.01 mm per-pixel resolution).RESULTS: Absolute values for rotation postoperatively were1.60° ± 1.13° at 1 to 3 days, 1.58° ± 1.36° at 30 days, and 1.83°± 1.44° at 90 to 180 days. No lens rotated more than 5°. Theaverage centration relative to the limbus was -0.04 ± 0.25 mmhorizontally and 0.04 ± 0.26 mm vertically at 1 to 3 days, 0.00 ±0.38 mm vertically and 0.01 ± 0.28 mm horizontally at 30 days,and 0.08 ± 0.37 mm vertically and 0.07 ± 0.47 mm horizontallyat 90 to 180 days.CONCLUSIONS: The Rayner 600S IOL showed exceptionalrotational stability and centration after implantation, meetingthe U.S. Food and Drug Administration prescribedAmerican National Standards Institute standards for toricIOLs.

KW - intraocular lens

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