B. Convergent squint in emmetropia, including simple myopic astigmatism, 98 cases. (_a_) Permanent 81 cases (13 previously operated on). Visual acuteness more than 1/7 in 44 cases. V. less than 1/7 to V. = 1/12 6 cases; V. less than 1/12 to V. = 1/36 20 cases; V. less than 1/36 7. Excluded from statistics of vision 4 (3 on account of complications, 1 on account of lack of accurate information). (_b_) Alternating convergent squint with emmetropia in one, myopia in the other eye, 4 cases. The degree of the myopia was 3·75 D., 5 D., 6 D., 12 D. Vision good on both sides. (_c_) Periodic squint 13 cases (in 6 of them the refraction was objectively and subjectively determined in mydriasis by atropine). No anisometropia worth mentioning was present in any of these cases. Visual acuteness more than 1/7 9 cases. V. < 1/7 to V. = 1/12 2. V. < 1/12 to V. = 1/36 1; one case with choroiditis excluded. C. Convergent squint with doubtful hypermetropia to H. = 1 D., including simple hypermetropic astigmatism, 38 cases. (_a_) Permanent 30 cases (5 previously operated on). Visual acuteness more than 1/7 7 cases. V < 1/7 to V. = 1/12 2. V. < 1/12 to V. = 1/36 5. V. < 1/36 2 cases. 4 excluded (3 complicated with cataract, one on account of impossibility of a trial of vision). (_b_) Periodic squint 8 cases. V. more than 1/7 7. V. < 1/7 to V. = 1/12 1 case. D. Hypermetropia 1 D. to 1·5 D. 37 cases. (_a_) Permanent 23 (4 cases previously operated on). V. more than 1/7 13, V. < 1/7 to V. = 1/12 3. V. < 1/12 to V. = 1/36 3. V. < 1/36 3. One case excluded (choroiditis of the macula lutea). (_b_) Periodic squint 14 cases. V. more than 1/7 12. V. < 1/12 to V. = 1/36 1 case. One excluded on account of choroiditis. E. Hypermetropia 1·5 D. to 2 D. 61 cases. (_a_) Permanent 41 (3 previously operated on). V. more than 1/7 26 cases. V. < 1/7 to V. = 1/12 3; V. < 1/12 to V. = 1/36 3; V. < 1/36 2; (7 cases excluded, 2 as complicated, 5 on account of the impossibility of testing the vision). (_b_) Periodic 20 cases. V. more than 1/7 16; V. < 1/7 to V. = 1/12 2; V. < 1/12 to 1/36 1; V. < 1/36 1 case. F. Hypermetropia 2 D. to 3 D. 88 cases. (_a_) Permanent 58 cases. V. more than 1/7 26 cases; V. < 1/7 to V. = 1/12 5 cases (among them one with V. = 1/12 in both eyes); V. < 1/12 to V. = 1/36 17; V. < 1/36 4 cases. Six cases excluded as indeterminable. (_b_) Periodic 30 cases. V. to 1/7 24; V < 1/7 to V. = 1/12 3; V. < 1/12 to V. = 1/36 1; V < 1/36 1. One case excluded as indeterminable.