Overminus Spectacles versus Part-Time Occlusion for Control of Intermittent Exotropia among Children
Merna Gamal Ahmed Abdelfatah;
Abstract
Purpose: To compare the short-term effectiveness of overminus spectacles versus part-time occlusion (PTO) in improving control of intermittent exotropia X(T).
Design: A clinical, randomized, prospective, pilot study.
Participants: A total of 60 children, from 2 to 10 years with X(T). Their distance office control score started from 2 or worse.
Methods: Children were randomly assigned to overminus spectacles, PTO therapy and observation for 4 months followed by 2 months without treatment.
Results: The mean distance exotropia control score after 4 months of treatment improved significantly in the overminus spectacle and the PTO groups from (3.9 vs. 3.9) to (2.0 vs. 2.7 ) respectively. After stoppage of treatment for 2 months, the score deteriorated significantly to (3.3 and 3) respectively. The Observation group's score showed non-significant change all through the study period.
There was a significant improvement in both mean near and distance angles only in the overminus spectacle group after 4 months of treatment and a significant deterioration after 2 months without treatment. Both near and distance angles showed non-significant change in both PTO and observation groups all through the study period. There was also a significant correlation between the poor compliance of the patients and their deterioration in the PTO group.
Conclusion: Overminus spectacle therapy is proved to be more effective in control of X(T) than PTO therapy. Poor compliance in PTO therapy affects the treatment effectiveness. It's suggested to work on a protocol of treatment cessation in further studies.
Key words: Intermittent Exotropia, Overcorrecting minus spectacles, Part-time occlusion
Design: A clinical, randomized, prospective, pilot study.
Participants: A total of 60 children, from 2 to 10 years with X(T). Their distance office control score started from 2 or worse.
Methods: Children were randomly assigned to overminus spectacles, PTO therapy and observation for 4 months followed by 2 months without treatment.
Results: The mean distance exotropia control score after 4 months of treatment improved significantly in the overminus spectacle and the PTO groups from (3.9 vs. 3.9) to (2.0 vs. 2.7 ) respectively. After stoppage of treatment for 2 months, the score deteriorated significantly to (3.3 and 3) respectively. The Observation group's score showed non-significant change all through the study period.
There was a significant improvement in both mean near and distance angles only in the overminus spectacle group after 4 months of treatment and a significant deterioration after 2 months without treatment. Both near and distance angles showed non-significant change in both PTO and observation groups all through the study period. There was also a significant correlation between the poor compliance of the patients and their deterioration in the PTO group.
Conclusion: Overminus spectacle therapy is proved to be more effective in control of X(T) than PTO therapy. Poor compliance in PTO therapy affects the treatment effectiveness. It's suggested to work on a protocol of treatment cessation in further studies.
Key words: Intermittent Exotropia, Overcorrecting minus spectacles, Part-time occlusion
Other data
| Title | Overminus Spectacles versus Part-Time Occlusion for Control of Intermittent Exotropia among Children | Authors | Merna Gamal Ahmed Abdelfatah | Issue Date | 2018 |
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