Session: Poster session B

Evaluation of accommodative amplitude in patients with consecutive exotropia

Bacground: We aimed to investigate the amplitude of accommodation as as risk factor in patients with consecutive exotropia.

 

Methods: We retrospectively scanned the files of patients who underwent surgery due to esotropia, between January 2009 and December 2023. Patients with at least six months of postoperative follow-up were included in the study. All patients underwent detailed eye examinations, and accommodation amplitudes and pupil sizes were measured using an objective method, Tonoref III (NIDEK Co., Ltd.). Children under the age of six and those unable to cooperate were excluded.Thirteen cases who developed consecutive exotropia after esotropia surgery (XT Group) and 17 cases who did not (ET Group) were included in the study. The data obtained were compared between the two groups.

 

Results: The mean amplitude of accommodation was 3.58 ±2.45 D and  4.05±2.70 D  in the XT Group,  3.88±2.70 D and 3.57± 2.19 D in the ET Group, in the right and the left eyes, respectively.The difference between the groups was not statistically different (p:0.79 and 0.59 right and the left eyes, respectively). No history of prematurity was detected in the control group, while prematurity was detected in 4 patients in the XT group (p:0.026). There was convergence insufficiency in 4 cases in the XT group but not in the control group (p<0.005). Strong fixation preference was more common in the XT Group (p:0.026).

 

Conclusion: The amplitude of accommodation measured by a new tool (Tonoref III) was not statistically different in patients who developed consecutive exotropia. 

 

Key words: Accommodation amplitude, consecutive exotropia, esotropia surgery