Intraocular lens power calculations in eyes with previous corneal refractive surgery: Challenges, approaches, and outcomes
In eyes with previous corneal refractive surgery, difficulties in accurately determining corneal refractive power and in predicting the effective lens position create challenges in intraocular lens (IOL) power calculations. There are three categories of methods proposed based on the use of historica...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
Wolters Kluwer Medknow Publications
2022-01-01
|
Series: | Taiwan Journal of Ophthalmology |
Subjects: | |
Online Access: | http://www.e-tjo.org/article.asp?issn=2211-5056;year=2022;volume=12;issue=1;spage=22;epage=31;aulast=Wang |
_version_ | 1797991296739049472 |
---|---|
author | Li Wang Douglas D Koch |
author_facet | Li Wang Douglas D Koch |
author_sort | Li Wang |
collection | DOAJ |
description | In eyes with previous corneal refractive surgery, difficulties in accurately determining corneal refractive power and in predicting the effective lens position create challenges in intraocular lens (IOL) power calculations. There are three categories of methods proposed based on the use of historical data acquired prior to the corneal refractive surgery. The American Society of Cataract and Refractive Surgery postrefractive IOL calculator incorporates many commonly used methods. Accuracy of refractive prediction errors within ± 0.5 D is achieved in 0% to 85% of eyes with previous myopic LASIK/photorefractive keratectomy (PRK), 38.1% to 71.9% of eyes with prior hyperopic LASIK/PRK, and 29% to 87.5% of eyes with previous radial keratotomy. IOLs with negative spherical aberration (SA) may reduce the positive corneal SA induced by myopic correction, and IOLs with zero SA best match corneal SA in eyes with prior hyperopic correction. Toric, extended-depth-of-focus, and multifocal IOLs may provide excellent outcomes in selected cases that meet certain corneal topographic criteria. Further advances are needed to improve the accuracy of IOL power calculation in eyes with previous corneal refractive surgery. |
first_indexed | 2024-04-11T08:49:47Z |
format | Article |
id | doaj.art-98991346f56d4be09a10769eb86ddef7 |
institution | Directory Open Access Journal |
issn | 2211-5056 2211-5072 |
language | English |
last_indexed | 2024-04-11T08:49:47Z |
publishDate | 2022-01-01 |
publisher | Wolters Kluwer Medknow Publications |
record_format | Article |
series | Taiwan Journal of Ophthalmology |
spelling | doaj.art-98991346f56d4be09a10769eb86ddef72022-12-22T04:33:39ZengWolters Kluwer Medknow PublicationsTaiwan Journal of Ophthalmology2211-50562211-50722022-01-01121223110.4103/tjo.tjo_38_21Intraocular lens power calculations in eyes with previous corneal refractive surgery: Challenges, approaches, and outcomesLi WangDouglas D KochIn eyes with previous corneal refractive surgery, difficulties in accurately determining corneal refractive power and in predicting the effective lens position create challenges in intraocular lens (IOL) power calculations. There are three categories of methods proposed based on the use of historical data acquired prior to the corneal refractive surgery. The American Society of Cataract and Refractive Surgery postrefractive IOL calculator incorporates many commonly used methods. Accuracy of refractive prediction errors within ± 0.5 D is achieved in 0% to 85% of eyes with previous myopic LASIK/photorefractive keratectomy (PRK), 38.1% to 71.9% of eyes with prior hyperopic LASIK/PRK, and 29% to 87.5% of eyes with previous radial keratotomy. IOLs with negative spherical aberration (SA) may reduce the positive corneal SA induced by myopic correction, and IOLs with zero SA best match corneal SA in eyes with prior hyperopic correction. Toric, extended-depth-of-focus, and multifocal IOLs may provide excellent outcomes in selected cases that meet certain corneal topographic criteria. Further advances are needed to improve the accuracy of IOL power calculation in eyes with previous corneal refractive surgery.http://www.e-tjo.org/article.asp?issn=2211-5056;year=2022;volume=12;issue=1;spage=22;epage=31;aulast=Wangcorneal refractive surgeryintraocular lens power calculationlasikphotorefractive keratectomyradial keratotomysmall-incision lenticule extraction |
spellingShingle | Li Wang Douglas D Koch Intraocular lens power calculations in eyes with previous corneal refractive surgery: Challenges, approaches, and outcomes Taiwan Journal of Ophthalmology corneal refractive surgery intraocular lens power calculation lasik photorefractive keratectomy radial keratotomy small-incision lenticule extraction |
title | Intraocular lens power calculations in eyes with previous corneal refractive surgery: Challenges, approaches, and outcomes |
title_full | Intraocular lens power calculations in eyes with previous corneal refractive surgery: Challenges, approaches, and outcomes |
title_fullStr | Intraocular lens power calculations in eyes with previous corneal refractive surgery: Challenges, approaches, and outcomes |
title_full_unstemmed | Intraocular lens power calculations in eyes with previous corneal refractive surgery: Challenges, approaches, and outcomes |
title_short | Intraocular lens power calculations in eyes with previous corneal refractive surgery: Challenges, approaches, and outcomes |
title_sort | intraocular lens power calculations in eyes with previous corneal refractive surgery challenges approaches and outcomes |
topic | corneal refractive surgery intraocular lens power calculation lasik photorefractive keratectomy radial keratotomy small-incision lenticule extraction |
url | http://www.e-tjo.org/article.asp?issn=2211-5056;year=2022;volume=12;issue=1;spage=22;epage=31;aulast=Wang |
work_keys_str_mv | AT liwang intraocularlenspowercalculationsineyeswithpreviouscornealrefractivesurgerychallengesapproachesandoutcomes AT douglasdkoch intraocularlenspowercalculationsineyeswithpreviouscornealrefractivesurgerychallengesapproachesandoutcomes |