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Yoshihito Mochizuki, Mana Okamoto, Akiko Kimura, Miho Fukuda, Miho Kondo, Osamu Mimura, Fumi Gomi; Visual function responses to extraocular muscle surgery for intermittent exotropia in young and elderly patients. Invest. Ophthalmol. Vis. Sci. 2019;60(9):4442.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate the effects of surgery in young and elderly patients with intermittent exotropia (XT) measured in terms of binocular function and vision-related quality of life.
75 patients who had been diagnosed with XT and had undergone extraocular muscle surgery were recruited. We separated the patients into a young group aged < 40 years (32 patients, mean age 24.8 years) and an elderly group aged ≧ 60 years (43 patients, mean age 74.6 years ). To assess eye position and binocular function, the alternate prism cover test (APCT), the Titmus stereo test (TST), and the Distance randot stereo test (DRST) were run before and after surgery. The VFQ25 questionnaire in Japanese was used to determine the patients’ satisfaction with the surgery.
The mean near/distance deviation angles before surgery were 44.7 ± 20.1/35.4 ± 20.0 prism diopters (PD) for the young group and 66.6 ± 24.8/48.8 ± 21.1 PD for the elderly group, and both near/distance deviation angles were significantly greater for the elderly group (p = 0.0001, p = 0.0082). The mean near/distance deviation angles at 3 months after surgery improved significantly in both groups, to 16.7 ± 9.6/11.3 ± 7.5 PD for the young group and 27.1 ± 15.8/14.1 ± 12.7 PD for the elderly group (p < 0.001). The postoperative near deviation angle for the elderly group was still greater than that for the young group.The score on TST improved significantly in both groups (p = 0.0117, p = 0.0008), but that on DRST improved only in the young group (p = 0.0001). The score on VFQ25 in the young group improved from 81.1 to 89.1 (p = 0.0022), that in the elderly group improved from 70.6 to 76.9 (p = 0.1505), and there were no significant differences.
Eye position and near stereoacuity were improved by strabismus surgery in both groups.Distance stereoacuity and satisfaction were expected to improve in the young group.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.
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