Accuracy of pattern deviation in estimating the glaucomatous damage in the central 10° visual field in eyes with glaucoma and cataract.
Tomita Ryo, Asaoka Ryo, Hirasawa Kazunori, Fujino Yuri, Nakakura Shunsuke, Murata Hiroshi, Omura Tetsuo, Shoji Nobuyuki, Obana Akira, Nishiguchi Koji M
AI Summary
This study found central 10° visual field pattern deviation can underestimate glaucoma damage as glaucoma progresses and overestimate it as cataract progresses, impacting clinical assessment.
Abstract
Background/aims: The accuracy of pattern deviation (PD) in estimating the damage to the glaucomatous visual field (VF) in the central 10° in eyes with glaucoma and cataract is unclear.
Methods
This retrospective study includes 63 eyes of 52 glaucoma patients who successfully underwent cataract surgery or cataract surgery plus iStent implantation. Using the Humphrey Field Analyser 10-2 test, VF was measured within 6 months preoperatively and postoperatively (VF pre and VF post , respectively). The mean total deviation values in VF post (mTD post ) indicates glaucomatous damage without cataract and the difference between this value and mean PD values in VF pre (mPD pre ) was evaluated (εmPD). The effect of cataract was then evaluated as the difference between mTD post and mTD pre (ΔmTD), while the effects of mTD post and ΔmTD on εmPD were also assessed. In addition, based on preoperative visual acuity (VA pre ) and VF pre , the optimal model for predicting mTD post was identified. The error of this method (εOptimalModel) was estimated as the difference against mTD post , which was compared with εmPD.
Results
Compared with mTD pre , there was a significant improvement in mTD post (p=0.028). A significant difference was observed between mPD pre and mTD post (p<0.001). Further, εmPD significantly increased with the increase of mTD post or ΔmTD (p<0.001 and p=0.0444, respectively). The absolute εOptimalModel was significantly smaller than the absolute εmPD (p<0.001).
Conclusions
This study warns clinicians that PD of the central 10° VF might underestimate the glaucomatous VF damage with the progression of glaucoma and overestimate it as a cataract progresses.
MeSH Terms
Shields Classification
Key Concepts5
In eyes with glaucoma and cataract, pattern deviation (PD) of the central 10° visual field (VF) might underestimate the glaucomatous VF damage with the progression of glaucoma.
In eyes with glaucoma and cataract, pattern deviation (PD) of the central 10° visual field (VF) might overestimate glaucomatous VF damage as a cataract progresses.
The mean total deviation values in VF post-cataract surgery (mTD post) significantly improved compared with mean total deviation values in VF pre-cataract surgery (mTD pre) (p=0.028) in 63 eyes of 52 glaucoma patients who underwent cataract surgery or cataract surgery plus iStent implantation.
A significant difference was observed between mean pattern deviation values in VF pre-cataract surgery (mPD pre) and mean total deviation values in VF post-cataract surgery (mTD post) (p<0.001) in 63 eyes of 52 glaucoma patients who underwent cataract surgery or cataract surgery plus iStent implantation.
The absolute error of an optimal model (εOptimalModel) for predicting mTD post-cataract surgery was significantly smaller than the absolute error of mean pattern deviation (εmPD) (p<0.001) in 63 eyes of 52 glaucoma patients who underwent cataract surgery or cataract surgery plus iStent implantation.
Related Articles5
Effect of the AcrySof Natural intraocular lens on blue-yellow perimetry.
Clinical TrialVisual field changes after cataract extraction: the AGIS experience.
Observational StudyEffect of cataract extraction on frequency doubling technology perimetry in patients with glaucoma.
Cohort StudyEffect of yellow-tinted intraocular lenses on short-wavelength automated perimetry.
Clinical TrialEffect of yellow-tinted intraocular lenses on short-wavelength automated perimetry.
Cross-Sectional StudyIs this article assigned to the wrong chapter(s)? Let us know.