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Biomedical subjects

W Marsh-Tootle

Publications and source records attributed to W Marsh-Tootle.

6 recordsLinked to original sources
PubMed2001

Acquired unilateral visual loss attributed to an accommodative spasm.

BACKGROUND: Accommodative spasm (AS) has been reported to be a rare cause of an acquired unilateral visual loss. We describe a unique case of acquired visual loss due to an apparent unilateral AS triggered by occlusion of the contralateral eye. Clinical examination and photorefraction techniques were performed during the acute phase of the disorder and in the follow-up evaluations. CASE REPORT: An otherwise healthy 27-year-old woman presented with a 2-month decrease of vision in her left eye. Unaided visual acuity in the right eye was 20/20 and in the left eye was finger counting. Orthophoria existed at distance and near. The decrease in vision in the left eye was attributed to an apparent unilateral AS of 5 D, which occurred only when the right eye was occluded. Under the occluder, the right eye also manifested an AS. With the left eye occluded or with binocular viewing, the right eye and left eye accommodated normally. With a 5 D convex lens before the right eye, the visual acuity in the left eye was 20/20. Refractive error with cycloplegia revealed low hyperopia in each eye. CONCLUSION: AS can be the cause of acquired unilateral visual loss. To our knowledge, this is the first documented report of an apparent unilateral AS triggered by occlusion of the contralateral eye.

Accommodation, Ocular↗
PubMed1998

Clinical course of accommodative esotropia.

PURPOSE: To report the clinical course of patients having accommodative esotropia and to determine whether the strabismus resolves during the adolescent years. METHODS: Patients diagnosed with accommodative esotropia from 1983 to 1991 were recalled to the clinic for re-examination. For all patients, the clinical records indicated that the esotropia had begun in early childhood and was controllable at some time during the follow-up period with plus power single vision glasses and/or bifocals. Re-examination included assessment of patient history, visual acuity, ocular alignment, versions, sensory fusion, and refractive error. The ocular alignment status with and without any current plus single vision and/or bifocal correction, and the refractive error at recall, were compared to the same findings taken at the patient's initial clinic visit. These findings were compared to determine whether the accommodative esotropia had resolved, improved, remained the same, or increased in amount. RESULTS: Thirty-nine patients participated in the study. At the time of recall their average age and follow-up period were 16.8 and 9.5 years, respectively. Before treatment, the mean eso deviation was 14.5 delta at distance and 21.6 delta at near. At recall, 15 patients used single vision glasses, 9 used glasses with bifocals, 11 used contact lenses, and 4 patients used no optical correction. Five patients (12.8%) had best corrected acuity in one eye of 20/30 or poorer. Twenty patients (57.1%) were not strabismic with their current refractive correction, whereas 15 patients (42.8%) continued to be esotropic (intermittent or constant) at distance and/or near. When assessing ocular alignment without the current plus power correction, 26 patients (82%) were esotropic and 4 patients (15.6%) were heterophoric. The mean deviation without the optical correction was 18.6 delta at distance and 19 delta at near. Of the 4 patients presenting without an optical correction, 3 were esotropic at distance and/or near and 1 patient was heterophoric. Six patients (15.3%) also had inferior oblique overaction, 2 which occurred with superior oblique palsy. Thirty-three patients (86.8%) fused the Worth dot test at distance and/or near, and 35 patients (89.7%) had stereopsis (mean, 84 sec arc). The mean spherical equivalent refractive error changed for the group from 2.77 D hyperopia at the initial evaluation to 1.95 D hyperopia at recall (mean refractive shift = -0.08 D/year). CONCLUSIONS: Accommodative esotropia persists for most patients into adolescence and early adulthood. These patients need to be carefully monitored during this period because most do not outgrow their hyperopia and some can again become esotropic.

Accommodation, Ocular↗
PubMed1991

Changes in retinal correspondence after changes in ocular alignment.

We studied the changes in retinal correspondence for 32 constant strabismic patients whose ocular alignment was altered either surgically or spontaneously over a period of time. Patients having normal retinal correspondence (N = 10) generally maintained normal correspondence after the change in ocular alignment. Patients with anomalous retinal correspondence (N = 20) behaved differently. Thirteen of these patients maintained anomalous correspondence and seven patients developed normal correspondence after the change in ocular alignment. For the patients who developed normal correspondence, the direction of the strabismus also changed. We conclude that normalization of retinal correspondence is more likely to occur in strabismic deviations that are overcorrected.

Adolescent↗
PubMed1989

Changes in refractive error for exotropes treated with overminus lenses.

The refractive changes of pediatric patients who were prescribed overminus lenses for exotropia were evaluated. Overminus lenses means additional minus power over the lenses required to correct the refractive error at distance. Forty exotropic patients, ages 1 to 15 years, were prescribed overminus lenses (-0.50 D to -3.75 D) for a period of 9 to 86 months. A small but significant correlation was found between the initial refractive error and the mean annual change toward myopia. Other factors such as age when treatment was given, duration of therapy, amount of overminus, and the amount of the exodeviation had little effect on the rate of myopic change. The mean annual changes in refractive error for hyperopes (-0.13 +/- 0.44 D, N = 15), emmetropes (-0.26 +/- 0.37 D, N = 17), and myopes (-0.75 +/- 0.77 D, N = 18) were similar to values reported in the literature for nonexotropic children.

Adolescent↗