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Biomedical subjects

H S Eustis

Publications and source records attributed to H S Eustis.

23 records · Page 2Linked to original sources
PubMedDate not supplied

Inferior oblique overaction in infantile esotropia: fundus extorsion as a predictive sign.

BACKGROUND: Inferior oblique overaction develops in 72% of patients with infantile esotropia but generally is not recognized until the patient is between 2 and 4 years of age. METHODS: While undergoing bilateral medial rectus recessions, photographs were taken of the posterior pole of 27 eyes in 14 patients with infantile esotropia and graded for the presence or absence of torsion by a masked observer. Follow up ranged from 10 months to 6 years. RESULTS: Oblique muscle overaction developed in 15 of the 27 eyes. Of these 15, six demonstrated fundus torsion in infancy, before the oblique dysfunction was recognized clinically. CONCLUSION: The presence of abnormal fundus torsion can serve as a marker for patients with infantile esotropia who ultimately will develop overt oblique muscle dysfunction.

Esotropia↗
PubMedDate not supplied

Treatment for amblyopia: results using occlusive contact lens.

PURPOSE: Amblyopia treatment occasionally is complicated by patch intolerance, resulting in a poor outcome. Therefore, a prospective study was designed to examine the efficacy and safety of using occlusive contact lenses in the treatment of amblyopia. METHODS: Twenty-five patients, aged 2.5 to 9.5 years, who were using an opaque hydrogel contact lens for the treatment of amblyopia, were followed prospectively. RESULTS: Overall, 92% of patients improved at least one line of visual acuity. Eight patients improved > or = 2 octaves and 12 other patients improved > or = 1 octave. In three patients, the change in visual acuity was < 1 octave. Complications were seen in nine patients: contact lens irritation in five; poor contact fit in three; and peeking around the lens in one. The recurrence rate was high. In 11 of 25 patients, amblyopia rapidly returned to a reduced level when the contact lens was discontinued. CONCLUSIONS: Occlusive contact lenses can be used in treating amblyopia in children. This treatment is ideal in patients who were patch-intolerant and failed with conventional treatment. Patients should have close follow up, however, to monitor any anterior segment complications from contact lens use and to identify the patients in whom amblyopia recurs.

Amblyopia↗
PubMedDate not supplied

Effect of bipolar cautery on tensile strength of 6-0 polyglactin 910 suture.

PURPOSE: To determine the effect of bipolar cautery on 6-0 polyglactin 910 suture. METHODS: Three groups of sutures were tested for maximum tensile strength. The first group (direct cautery) had bipolar cautery applied directly to the suture. The second group (scleral cautery) had bipolar cautery applied directly on top of the sclera, through which the suture was passed one-half scleral thickness. The third group (control) had no application of cautery to the suture. RESULTS: The mean tensile strength for the direct cautery sutures (n=8) was 553 g; for the scleral cautery sutures (n=7), 577 g; and for the control sutures (n=5), 553 g. There was no statistically significant difference in tensile strength between the three groups, with the analysis of variance yielding P=.56. CONCLUSION: Bipolar cautery causes little to no risk of reducing the tensile strength of 6-0 polyglactin 910 suture in the setting of strabismus surgery.

Cautery↗
PubMedDate not supplied

Pseudostrabismus secondary to use of cosmetic contact lenses.

The DuraSoft 3 Colors cosmetic contact lens is manufactured with a pattern of opaque dots applied to its front surface in order to produce a change in apparent iris color. We fit ten subjects with the DuraSoft 3 Colors contact lens, and all were found to have pseudoexotropia. The deviation ranged from 10 to 22 delta (prism diopters) (average: 16 delta). The cause of the pseudoexotropia was creation of a pseudopositive angle kappa from lateral displacement of the contact lens. Physicians fitting the DuraSoft 3 Colors contact lens should pay special attention to centration characteristics during the fitting session in order to avoid creation of pseudostrabismus.

Color↗