A surgery on twenty six thousand and three hundred seventy eight patients with convergent squint (26378), thirteen thousand, one hundred and eighty one patients with divergent squint (13181), one thousand and twenty nine patients of vertical squint (1029), ten thousand and one hundred thirty nine patients of heterophoria (10139) and two thousand sixty one patients of paralytic squint (2061) seen during the past ten years at Giza Ophthalmic Hospit