The prevalence of strabismus types in strabismic Iranian patients

Figures & data

Figure 1 The relative prevalence of various types of strabismus to the total number of strabismic patients.

Abbreviation: DVD, dissociated vertical deviation.

Table 1 Prevalence of various types of esotropia related to the total number of strabismic patients

Types of esotropia	Gender				Total
	Female		Female		In esotropic patients		In strabismic patients
	N	%	N	%	N	%	%
Accommodative esotropia	154	52.4	140	47.6	294	39.72	25.04
Nonaccommodative esotropia	71	53.8	61	46.2	132	17.83	11.24
Partially accommodative esotropia	63	51.7	59	48.3	122	16.48	10.39
Early onset esotropia	28	38.9	44	61.1	72	9.7	6.13
DRS type 1	26	61.9	16	38.1	42	5.7	3.57
Micro esotropia	6	27.3	16	72.7	22	3	1.83
Sensory esotropia	2	25	6	75	8	1.1	0.68
Other type	16	33.3	32	66.7	48	6.5	4.08
Total	366		374		740	100	63.03

Abbreviation: DRS, Duane’s retraction syndrome.

Table 2 Prevalence of various types of exotropia related to the total

Types of exotropia	Gender				Total
	Female		Male		In exotropic patients		In strabismic patients
	N	%	N	%	N	%	%
Intermittent XT	72	50.7	70	49.3	142	49.3	12.09
Constant XT	66	55.9	52	44.1	118	41.8	10.05
DRS type 2	5	62.5	3	27.5	8	2.8	0.68
Other type	7	35	13	65	20	6.9	1.70
Total	150	52.08	138	47.92	288	100	24.53

Abbreviations: XT, exotropia; DRS, Duane’s retraction syndrome.

Table 3 Frequency distribution of patients with vertical deviation

Vertical deviation types	Gender
	Female		Male
	N	%	N	%
Dissociated vertical deviation	26	37.1	44	62.9
Hypertropia	22	52.4	20	47.6
Hypotropia	8	57.1	6	42.9
Total	56	44.4	70	55.5

Figure 2 Number of patients with ocular abnormalities and ptosis distribution in strabismic patients.

Table 4 The prevalence of cranial nerve palsy and some signs associated with various types of strabismus

	In strabismic patients
	N	%
IOOA	130	11.07
DVD	51	4.34
V pattern	39	3.32
Ptosis	28	2.38
4 nerve palsy	21	1.79
A pattern	18	1.53
6 nerve palsy	14	1.92
Epicanthal fold	12	1.02
Cross fixation	11	0.93
SOOA	8	0.68
3 nerve palsy	3	0.26
Total	335	28.53

Abbreviations: IOOA, inferior oblique over action; DVD, dissociated vertical deviation: SOOA, superior oblique over action.