No abstract available.
Strabismus*

No abstract available.
Strabismus*

A study on 96 children with squint of which cross-eyed (74) treated in the institute of ophthalmology during 1993-1996 has shown that the merely exercise treatment recovered the biocular vision well for squint, for the latent squint at high grade, alternant squint at high grade, local accommodative cross eyed and concomitant squint at high grade, it should combine the exercise and balance surgical treatment.
Strabismus ; child

Plication of horizontal recti with many advantages in the treatment of strabismus has been applied by many authors in the world, but not yet in Vietnam. Objectives: to evaluate the results of this surgery that applied in Vietnamese. Methods: Prescriptive, longitudinal prospective study that had been done in Hanoi National Institute of Ophthalmology from 9/2003 to 9/2004. Results: In postoperative period, 83.3% of cases with exotropia and 89.6% of cases with esotropia are well corrected after 6 months, 100% of operated eyes are well healed with a smooth conjunctive scars and 52.62 % of operated patients have got a full binocular vision after 3 months following up. The rate of the eyes with suspected amblyopia is reduced from 18.8% to 9.8%, with moderate amblyopia is also reduced from 8.8% to 2.4% by 6 months postoperatively, but the rate of the eyes with severe amblyopia is not significantly changed after surgery. Conclusion: Plication of horizontal recti is a safe, effective method for correction of strabismus, especially when it is necessary to do surgery on many extra-ocular muscles in the same eye.
Strabismus ; Therapeutics

Numerous authors published tables showing the amount of strabismus surgery and the effectivity. Although Scobee and Knapp etc. stressed the difficulty of making an accurate prediction of strabismus surgery. the standardized formula of the surgical treatment of strabismus has long been the ambition of ophthalmologist. Author agreed with the opinion of Dyer who provided the ophthalmologist with excellent tables suggesting combinations of muscles and amount of surgery to correct various types of strabismus and so 132 cases of comitant horizontal strabismus treated surgically with Dyer method at Kong Eye Clinic from August 1975 to July 1976 were analyzed. With author's data. this paper present a mathematical formula to estimate the amount of strabismus surgery.
Muscles ; Strabismus*

Anterior transposition of inferior oblique muscle(ATIO) is known to an effective procedure for correcting marked overaction of inferior oblique muscle. However, depression in abduction and elevation deficiency in primary and abduction positions have occurred without adherence syndrome after this procedure. To avoid these complications, the author modiffied ATIO by transposing only the anterior portion of inferior oblique muscle at 2mm anterior to the temporal insertion site of inferior rectus, and placing the posterior portion of muscle just posterior to the insertion site of inferior rectus. Modified ATIO was performed in 4 cases of inferior oblique overaction(IOOA) with dissociated vertical deviation(DVD), 2 cases of unilateral IOOA withcontralateral superior oblique overaction(SOOA) and 5 cases of superior oblique palsy(SOP) Knapp class IV. They were observed for over 6 months (6~18 months). Three of 4 cases of IOOA with DVD were improved but adherence syndrome occurred in one case and depression in abduction occurred in another case. In 2 cases of unilateral IOOA with contralateral SOOA, hypertropia was decreased from 20delta and 2delta respectively, after the procedure. In 5 cases of SOP Knapp class IV, preoperative hypertropia was 20delta-40delta in primary position. After modified ATIO, hypertropia was 0delta-20delta . The correction effect was 12delta-35delta , with an average of 18.4delta in primary position. In 4 of 5 cases, hypertropia was corrected within 10delta in primary position. Modified ATIO is an effective procedure for unilateral IOOA with contralateral SOOA and SOP Knapp class IV as a single muscle surgery.
Depression ; Strabismus

The surgical treatment of functional strabismus in adult is a surgery of efficacy in esthtic aspect and in functional aspect. it is a flexible dynamic operation. In case of < 30 strabismus, operation can be conducted on an eye and in case of > 300 strabismus, operation can be conducted on 2 eyes
Strabismus ; Eye Diseases ; Adult

64 patients treated in Pediatric Ophtalmology Department of National Institute of Ophtalmology in the year 1998, because functional strabisonus. The study conducted by descriptive intervention without control group in combining with a vertical study. Result showed that according to high instability, the oscillation reached 7-80, the proper method management will be choosen following clinical manifestation.
Therapeutics ; Surgery ; Strabismus

Delayed reattachment of the muscle to the sclera may be desirable to correct the deviation of eye developed after the surgery. Polytetrafluoroethylene(PTFE) was placed around the cut end of the muscle as a physical barrier between the free muscle end and the sclera in 16 rabbits in order to prevent the postoperative adhesions. PTFE was effective in delaying the adjustment for up to 4 weeks after surgery in 4 out of 10 eyes. After removal of PTFE, adjustment was possible up to 12 weeks in 24 out of 25 eyes because there was no adhesion between the muscle and PTFE. In conclusion, PTFE may be clinically helpful for delaying the timing of adjustment.
Polytetrafluoroethylene* ; Rabbits ; Sclera ; Strabismus*

In twenty five patients with vertical strabismus including dissociated vertical deviation, the auther measured the width of the superior rectus muscle insertion and the distances from posterior limbus to nasal, middle and temporal portion of the superior rectus insertion. The means of width of the insertion was 9.8mm +/- 0.92, the distances from the posterior limbus to the nasal, middle and temporal portion of the superior rectus insertion were 7.2mm +/- 0.92, 6.9mm +/- 0.7, and lO.8mm +/- 1.0 (in 7 cases) respectively. Statistically, the means of these measurements of DVD were not significantly different from other vertical strabismus patients. These reults suggest that the etiology of the DVD is not anatomic but neurogenic in origin.
Humans ; Muscles* ; Strabismus*