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Finger-controlled nonultrasonic lens extractor
Luiz A F Beniz1, Marina S Chatzea, Siamak Zarei-Ghanavati
1From the Bascom Palmer Eye Institute, University of Miami, Miami, Florida (Beniz, Chatzea, Zarei-Ghanavati, Jammal, Yoo); Department of Ophthalmology and Visual Sciences, Paulista School of Medicine, Federal University of São Paulo, São Paulo, Brazil (Beniz); First Department of Ophthalmology, "G. Gennimatas" Hospital, National and Kapodistrian University of Athens, Athens, Greece (Chatzea); Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran (Zarei-Ghanavati).
Purpose:
To report initial surgical experience and learning curve with a new finger-controlled, ultrasoundless lens extractor device and provide insights for future surgical endeavors.
Setting:
Bascom Palmer Eye Institute, Miami, Florida.
Design:
Single-center, noncomparative, retrospective, consecutive case series.
Methods:
61 eyes of 51 individuals with cataract. All surgeries were performed with the miCOR 700 lens extractor by a single experienced physician. Nuclear density was graded preoperatively. Corrected distance visual acuity (CDVA), intraocular pressure (IOP), and pachymetry were evaluated preoperatively and postoperatively. Surgical videos were reviewed to collect data on time for each surgical step and complications. Regression analyses assessed the learning curve, performance improvement, and effects of nuclear density on surgical time and postoperative pachymetric variation.
Results:
Patients had a mean age of 72.2 ± 7.6 years. Increased surgical experience significantly reduced procedure time ( P < .001), nuclear removal time ( P = .018), and cortex removal time ( P = .002). Higher nuclear density resulted in a longer procedure ( P < .001) and nuclear removal time ( P < .001). One posterior capsular rent occurred, not attributed to the lens extractor. No thermal damage to the corneal wound was observed. Postoperative CDVA improved significantly ( P < .001 for eyes without ocular comorbidities, P = .016 for eyes with ocular comorbidities). All cases of corneal edema and IOP spikes resolved within a month.
Conclusions:
The miCOR 700 lens extractor offers an innovative, cost-effective approach to cataract surgery. Further research is needed to compare it with conventional phacoemulsification techniques.
