Abstract
Purpose
To evaluate the influence of strong fixation preference on clinical and surgical outcomes, in non-amblyopic patients with basic-type intermittent exotropia (IXT).
Materials and methods
The records of patients were retrospectively investigated. Non-amblyopic patients with the diagnosis of basic-type IXT were enrolled and divided into two groups according to the presence of strong fixation preference (SFP). Best-corrected visual acuity, refractive errors, deviations in near and distance, convergence patterns, motor fusion, stereopsis were evaluated and compared. Patients who underwent surgery in each group composed subgroups and postoperative deviations, convergence patterns, motor fusion, and stereopsis were compared.
Results
Seventy-seven patients were enrolled and divided into two groups according to the presence of SFP: patients with SFP composed Group 1 and patients with alternating fixation composed Group 2. Statistically significant difference was seen between groups in terms of motor fusion (p: 0.02). Other parameters did not differ between groups. Data obtained from patients in subgroups of each group were not statistically different.
Conclusion
The evaluation of basic-type exotropic patients according to their fixation preference revealed us that motor fusion might be affected by strong fixation preference. We also observed that SFP did not affect surgical success rates, convergence patterns, and stereopsis of exotropic patients.
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References
Burian HM, Spivey BE (1965) The surgical management of exodeviations. Am J Ophthalmol 59:603–620
Joyce KE, Beyer F, Thomson RG, Clarke MP (2015) A systematic review of the effectiveness of treatments in altering the natural history of intermittent exotropia. Br J Ophthalmol 99(4):440–450
Benish R, Flanders M (1994) The role of stereopsis and early postoperative alignment in long-term surgical results of intermittent exotropia. Can J Ophthal 29:119–124
Olitsky SE (1998) Early and late postoperative alignment following unilateral lateral rectus recession for intermittent exotropia. J Pediatr Ophthalmol Strabismus 35:146–148
Yoo G, Ha SG, Kim SH (2019) Distance suppression as a predictive factor in progression of intermittent exotropia. Korean J Ophthalmol 33(5):446–450. https://doi.org/10.3341/kjo.2019.0054
Jung EH, Kim SJ, Yu YS (2016) Factors associated with surgical success in adult patients with exotropia. JAAPOS 20(6):511–514
Repka MX, Chandler DL, Holmes JM, Donahue SP, Hoover DL, Mohney BG et al (2020) The relationship of age and other baseline factors to outcome of initial surgery for intermittent exotropia. Am J Ophthalmol 212:153–161
Somer D, Demirci S, Cinar FG, Duman S (2007) Accommodative ability in exotropia: predictive value of surgical success. JAAPOS 11(5):460–464
Trakanwitthayarak S, Patikulsila P (2017) Prognostic factors predicting the surgical outcomes of bilateral lateral rectus recession for patients with concomitant exotropia in Chiang Mai University Hospital. J Med Assoc Thai 100(1):64–69
Procianoy L, Procianoy E (2010) The accuracy of binocular fixation preference for the diagnosis of strabismic amblyopia. JAAPOS 14(3):205–210
Alharkan DH, Khan AO (2014) False amblyopia prediction in strabismic patients by fixation preference testing correlates with contralateral ocular dominance. JAAPOS 18(5):453–456
Attarzadeh A, Hoseinirad A, Farvadin M, Talebnejad MR, Alipour A (2009) Reliability of fixation preference for detecting amblyopia in strabismic patients. J Ophthalmic Vis Res 4(3):160–163
Çakır B, Bursalı Ö, Özmen S, Aksoy NÖ, Babashli T, Alagöz G (2019) Factors influencing stereopsis in patients with both refractive accommodative esotropia and amblyopia. Int Ophthalmol 39(6):1263–1267
Levi DM, Knill DC, Bavelier D (2015) Stereopsis and amblyopia: a mini-review. Vis Res 114:17–30. https://doi.org/10.1016/j.visres.2015.01.002
Hakim OM (2007) Association between fixation preference testing and strabismic pseudoamblyopia. J Pediatr Ophthalmol Strabismus 44(3):174–177
Pedraza IS, Clarke MP, Read J (2011) Single vision during ocular deviation in intermittent exotropia. Ophthalmic Physiol Opt 31:45–55
Chaumillon R (2017) Asymmetry in visual information processing depends on the strength of eye dominance. Neuropsychologia 96:129–136
Yıldırım C, Mutlu FM, Chen Y, Altınsoy HI (1999) Assessment of central and peripheral fusion and near and distance stereoacuity in intermittent exotropic patients before and after strabismus surgery. Am J Ophthalmol 128(2):222–230
Huh J, Ha SG, Kim SH (2000) Recovery from suppression with successful motor alignment after surgery for intermittent exotropia. J Pediatr Ophthalmol Strabismus 57(1):21–26
Yan X, Lin X (2018) Postoperative stereopsis in adult patients with horizontal comitant strabismus with normal vision who are stereoblind. J Pediatr Ophthalmol Strabismus 55(6):407–411
Yao J, Qu X, Lin J, Liu H (2019) Does successful surgical correction of childhood large angle exotropia in adults make any difference to binocularity and quality of life? Strabismus 27(3):149–155
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Prior ethical approval from the Sakarya University Institutional Review Board (IRB: 71522473/050.01.04/170) was taken. The study was performed in adherence to the 1964 Declaration of Helsinki.
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Cakir, B., Aksoy, N.Ö., Bursalı, Ö. et al. Strong fixation preference in patients with manifest exotropia: Does it matter or not?. Int Ophthalmol 41, 527–532 (2021). https://doi.org/10.1007/s10792-020-01603-1
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DOI: https://doi.org/10.1007/s10792-020-01603-1