Although most available IOL power calculation formulas perform accurately for eyes of average axial length, they have been shown to be inaccurate for eyes that have unusually short and long axial length. To compare the prediction accuracy of new Hoffer Q with SRK-II formula, we reviewed, retrospectively, a series of 225 ECCE with PCL implantation cases, including 106 Hoffer Q group and 119 SRK-II group, each of which was further divided into subgroups based on axial length. The Hoffer Q formula overestimated the refraction and resulted in more myopic shift and was less accurate than SRK-II in all length eyes, except short length eyes. In short length eyes, both formulas had similar mean error and mean absolute error but Hoffer Q formula was more accurate than the SRK-II in +/- 0.5D prediction proportion.
Retrospective Studies

No abstract available.
Retrospective Studies*

No abstract available.
Retrospective Studies*

Authors retrospectively analyzed 22 cases of inferior oblique overaction, which were treated by means of infetior tlblique recession from May 1983 to June 1985. We compared preoperative and postoperative hyperdeviation in the primary position and adduction, and calculated the amount of corrected hyperdeviations in the prirrtary position and adduction pet millimeter of inferior oblique recession. The results were as follows: 1. The overall success rate was 84.4 % in primary inferior oblique overaction. 2. The amounts of correction in the primary position per millimeter of inferior oblique recession were 0.69 prism diopter. 3. The amounts of correction in adduction per millimeter of inferior oblique recession were 1.94 prism diopter. 4. Decrement amounts in adduction compared to in the primary position were 1.59 prism diopter per millimeter of inferior oblique recession.
Retrospective Studies

BACKGROUND/AIMS: Although both radial- and convex-arrayed endoscopic ultrasonography (EUS) scopes are widely used for observational EUS examinations, there have been few comparative studies on their power of visualization. The aim of this study was to evaluate the capability of these EUS scopes for observation of the pancreatobiliary junction. METHODS: The rate of successful visualization of the pancreatobiliary junction was retrospectively compared between a radial-arrayed and a convex-arrayed echoendoscope, from a prospectively maintained database. Study periods were defined as January 2010 to December 2012 for the radial group, and February 2015 to October 2016 for the convex group because the respective scope was mainly used during those periods. RESULTS: During the study period, 1,660 cases with radial EUS and 1,984 cases with convex EUS were recruited. The success rates of observation of the pancreatobiliary junction were 80.0% and 89.5%, respectively (p < 0.0001). CONCLUSIONS: The capability of visualization of the pancreatobiliary junction in observational EUS was found to be better with a convex-arrayed than with a radial-arrayed echoendoscope.
Endosonography ; Prospective Studies ; Retrospective Studies

PURPOSE: To investigate changes in the unoperated eye of patients who underwent unilateral surgery for asymmetrical dissociated vertical deviation. METHODS: We performed superior rectus recession and inferior oblique anterior transposition in the case of asymmetrical dissociated vertical deviation, and lateral rectus recession in the case of dissociated horizontal deviation. We excluded patients having a history of previous operation on the vertical rectus muscles, oblique muscle in the unoperated eye, nystagmus, neurologic problems, and imprecise measurement of deviation angle. Changes in the unoperated eyes of 11 patients who underwent unilateral surgery to correct asymmetrical dissociated vertical deviation in the other eye, from May 2003 to April 2004 were analyzed retrospectively at 1 year postoperative. RESULTS: Not all cases of preoperative latent dissociated vertical deviation manifested such deviation in the unoperated eye postoperatively. CONCLUSIONS: Unilateral surgery is an effective treatment in patients with asymmetrical dissociated vertical deviation and does not affect the unoperated eye.
Humans ; Muscles ; Retrospective Studies

No abstract available.
Infarction* ; Retrospective Studies*

Fifty-two patients with unstable cervical spine injuries underwent operations between January 1, 1990 to June 30, 1997 in our institution and this is retrospective study on clinical results about these patients. Patients with cervical instability resulted from injury posterior column, being included in White's criteria, were treated with Hafifax interlaminar clamps for cervical instability. We followed up forty-two cases for more than one year. All of the forty- two cervical fixations showed immediate and long term stability and there were no neurological complication. Neu rologic improvements were seen in thirty three, but thirteen cases were unchanged. These results indicate that Halifax interlaminar clamps are consider to be a safe and effective method for posterior stabilization of va rious causes of cervical spine instability.
Humans ; Retrospective Studies ; Spine*

Intradural disc herniation is a very rare condition, and multiple intradural disc herniations have not been reported to date. The latter may be confused with intradural extramedullary (IDEM) spinal tumors. Here, we report a case of multiple intradural disc herniations masquerading as multiple IDEM tumors and review the relevant literature. We retrospectively reviewed the patient's medical chart, reviewed the intraoperative microscopic findings, and reviewed of PubMed articles on intradural disc herniation. The masses considered to be IDEM tumors were confirmed to be multiple intradural disc herniations. A nonenhancing mass was found to have migrated along the intra-arachnoid space. Two enhancing masses could not migrate because of adhesion and showed peripheral neovascularization. We report an extremely rare case of multiple intradural lumbar disc herniations showing diverse enhancing patterns and masquerading as multiple IDEM tumors. In case of multiple enhancing IDEM masses suspected preoperatively, surgeons should consider the possibility of intradural disc herniation.
Lumbar Vertebrae ; Retrospective Studies

PURPOSE: To compare anterior levator resection with frontalis sling in congenital ptosis with poor levator function. METHODS: We performed a retrospective review of 19 patients (25 eyes) undergoing anterior levator resection and 25 patients (28 eyes) undergoing frontalis sling for congenital ptosis with poor levator action of 5 mm or less from January 1995 to December 2001. RESULTS: The mean postoperative MRD1 were 2.4+/-0.95 mm in the anterior levator resection group and, 2.6+/-0.94 mm in the frontalis sling group. Surgical outcomes were good, fair and poor in 11, 10, and 4 eyes of the anterior levator resection group and in 14, 9, and 5 eyes of the frontalis sling group, respectively. Success rates were 84.0% and 82.1% in each group. There were no statistically significant differences between the two groups (P>0.05). CONCLUSIONS: In congenital ptosis with poor levator function, the surgical outcomes of anterior levator resection were as good as those of frontalis sling.
Humans ; Retrospective Studies