Muhammad Abbas, Hafeezur Rahman, Imran Azam Butt, Nahid Ghani.
Prevalence and mode of presentation of vertical deviations in squint patients.
Rawal Med J Jan ;30(2):79-81.

Objective: The aim was to find the prevalence and mode of presentation of vertical deviations in patients presenting with strabismus. Methods: A total of 924 consecutive patients of strabismus were examined clinically to identify those patients who had any degree of vertical deviation. Results: All vertical deviations were seen in 11.4%. Pure vertical deviations were seen in about 2% of all strabismus cases. Conclusion: Over 60% of the patients with vertical deviation were under 10 years of age, with one third under 5 years. Pure vertical deviation was seen in about 2% of all strabismus cases. A positive family history of strabismus was found in 13% of the study group. The most common refractive error was hypermetropia in 51.9%, followed by astigmatism in 23.6% and myopia in 11.3%.

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