Reliability of automatic biometric iris recognition after phacoemulsification or drug-induced pupil dilation.
Eur J Ophthalmol
; 24(1): 58-62, 2014.
Article
in En
| MEDLINE
| ID: mdl-23873488
ABSTRACT
PURPOSE:
To investigate the reliability of a biometric iris recognition system for personal authentication after cataract surgery or iatrogenic pupil dilation.METHODS:
This was a prospective, nonrandomized, single-center, cohort study for evaluating the performance of an iris recognition system 2-24 hours after phacoemulsification and intraocular lens implantation (group 1) and before and after iatrogenic pupil dilation (group 2).RESULTS:
Of the 173 eyes that could be enrolled before cataract surgery, 164 (94.8%) were easily recognized postoperatively, whereas in 9 (5.2%) this was not possible. However, these 9 eyes could be reenrolled and afterwards recognized successfully. In group 2, of a total of 184 eyes that were enrolled in miosis, a total of 22 (11.9%) could not be recognized in mydriasis and therefore needed reenrollment. No single case of false-positive acceptance occurred in either group.CONCLUSIONS:
The results of this trial indicate that standard cataract surgery seems not to be a limiting factor for iris recognition in the large majority of cases. Some patients (5.2% in this study) might need "reenrollment" after cataract surgery. Iris recognition was primarily successful in eyes with medically dilated pupils in nearly 9 out of 10 eyes. No single case of false-positive acceptance occurred in either group in this trial. It seems therefore that iris recognition is a valid biometric method in the majority of cases after cataract surgery or after pupil dilation.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pattern Recognition, Automated
/
Pupil
/
Iris
/
Phacoemulsification
/
Biometric Identification
/
Mydriatics
Type of study:
Observational_studies
/
Prognostic_studies
Limits:
Female
/
Humans
/
Male
Language:
En
Journal:
Eur J Ophthalmol
Journal subject:
OFTALMOLOGIA
Year:
2014
Document type:
Article