Outcomes of torsional microcoaxial phacoemulsification using tips with 30-degree and 45-degree aperture angles.
OBJECTIVE
To compare the safety and efficacy of Ozil Intelligent Phaco torsional microcoaxial phacoemulsification surgeries performed using 30-degree and 45-degree aperture angled tips.


METHODS
Maltepe University School of Medicine Department of Ophthalmology, Istanbul, Turkey.


METHODS
Comparative case series.


METHODS
Eyes were assigned to 2.2 mm microcoaxial phacoemulsification using the torsional mode with a 45-degree (Group 1) or 30-degree (Group 2) aperture angled tip. A quick-chop surgical technique was used. The primary outcome measures were ultrasound time (UST), cumulative dissipated energy (CDE), longitudinal and torsional ultrasound (US) amplitudes, mean surgical time, mean balanced salt solution volume used, and mean central corneal thickness (CCT) changes.


RESULTS
The mean UST, CDE, and longitudinal and torsional US amplitudes were 58.21 seconds ± 33.81 (SD), 7.74 ± 6.23, 0.45 ± 0.30, and 26.30 ± 12.60 in Group 1 and 63.83 ± 23.42 seconds, 12.36 ± 6.75, 0.23 ± 0.26, and 44.65 ± 14.38 in Group 2, respectively. The mean CDE and torsional amplitudes were significantly lower in Group 1 (P=.002 and P=.001, respectively). The mean balanced salt solution volume was 73.30 ± 19.87 cc in Group 1 and 74.30 ± 19.44 cc in Group 2 (P=.821). The mean CCT change was 52.40 ± 38.08 μm and 99.35 ± 47.14 μm, respectively (P<.001).


CONCLUSIONS
Torsional phacoemulsification performed with a 45-degree aperture angled tip provided more effective lens removal with a lower CDE and less CCT change than a 30-degree aperture angled tip.
From the Department of Ophthalmology (Helvacioglu, Sencan, Tunc, Uyar), Maltepe University School of Medicine, and the Department of Ophthalmology (Yeter), Basaksehir State Hospital, Istanbul, Turkey. Electronic address: firathelvacioglu@yahoo.com.
Firat
F
Helvacioglu
From the Department of Ophthalmology (Helvacioglu, Sencan, Tunc, Uyar), Maltepe University School of Medicine, and the Department of Ophthalmology (Yeter), Basaksehir State Hospital, Istanbul, Turkey.
Sadik
S
Sencan
From the Department of Ophthalmology (Helvacioglu, Sencan, Tunc, Uyar), Maltepe University School of Medicine, and the Department of Ophthalmology (Yeter), Basaksehir State Hospital, Istanbul, Turkey.
Celal
C
Yeter
From the Department of Ophthalmology (Helvacioglu, Sencan, Tunc, Uyar), Maltepe University School of Medicine, and the Department of Ophthalmology (Yeter), Basaksehir State Hospital, Istanbul, Turkey.
Zeki
Z
Tunc
From the Department of Ophthalmology (Helvacioglu, Sencan, Tunc, Uyar), Maltepe University School of Medicine, and the Department of Ophthalmology (Yeter), Basaksehir State Hospital, Istanbul, Turkey.
O Murat
OM
Uyar
D000085:Acetates / Q000008:administration & dosage; D000368:Aged; D003315:Cornea / Q000473:pathology; D004338:Drug Combinations; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D008297:Male; D008866:Microsurgery / Q000379:methods; D008903:Minerals / Q000008:administration & dosage; D061646:Operative Time; D018918:Phacoemulsification / Q000295:instrumentation* / Q000379:methods*; D011446:Prospective Studies; D012965:Sodium Chloride / Q000008:administration & dosage; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology
D000085:Acetates; C030660:BSS solution; D004338:Drug Combinations; D008903:Minerals; D012965:Sodium Chloride