Table 2.

Methodological characteristics of 56 articles of the review.

Study (Author, year of publication)	Patient characteristics	Dysfunction	Symptoms obtained
Borsting E, 201213	218 children. Age: 9–17 years	CI	CISS V-15 + Academic Behaviour Survey
Barnhardt C, 201214	221 children. Age: 9–17 years	CI	CISS V-15
Pang Y, 201215	29 subjects. Age: 45–68 years	CI	CISS V-15
Scheiman M, 201116	221 children. Age: 9–17 years	CI + AI	CISS V-15
Serna A, 201117	42 children. Age: 5–18 years	CI	Case History
Shin S, 201118	57 children. Age: 9–13 years	CI + AI	19-Item COVD-QOL
Alvarez T, 201019	13 NBV subjects. Age: 21–35 years 4 CI subjects. Age: 20–26 years	CI	CISS V-15
Scheiman M, 201020	221 children. Age: 9–17 years	CI	CISS V-15
Wahlberg M, 201021	22 children. Age: 7–17 years	AI	Case History
Shin S, 200922	1031 children. Age: 9–13 years	AD + BD	19-Item COVD-QOL
Rouse M, 200923	102 NBV children. Age: 9–17 years 221 CI children. Age: 9–17 years	CI	CISS V-15
Rouse M, 200924	212 children. Age: 9-17years	CI	Academic Behaviour Survey
Teitelbaum B, 200925	29 subjects. Age: 45–68 years	CI	CISS V-15
Kulp M, 200926	221 children. Age: 9–17 years	CI	CISS V-15
Cooper J, 2009 27	43 subjects. Age: 9–33 years	AD + BD	CISS V-15
Chase C, 200928	88 subjects. Age: 18–22 years	AI	Conlon Survey
CITT, 200929	79 children. Age: 9–17 years	CI	CISS V-15
Bartuccio M, 200830	504 subjects. Age: 6–27 years	AI	Case History
Brautaset R, 200831	24 children. Age: not specified Mean age: 10.3 years	AI	Case History
Borsting E, 200832	23 subjects. Age: not specified Mean age: 19 years, 9 month	AD + BD	Conlon Survey +  CISS V-15
Kulp M, 200833	32 subjects. Age: 9–30 years	CI	CISS V-15
CITT, 2008a34	221 children. Age: 9–17 years	CI	CISS V-15
CITT, 2008b35	221 children. Age: 9–17 years	CI	CISS V-15 + Academic Behaviour Survey
Abdi S, 200736	12 children. Age: 8–16 children	AI	Case History
Borsting E, 200737	571 subjects. Age: 18–22 years	AD + BD	Conlon Survey
Bodack M, 200738	241 subjects. Age: 26–81 years	AD + BD	Case History
Aziz S, 200639	78 subjects. Age: 5–73 years	BD	Case History
Brautaset R, 200640	10 subjects. Age not specified Mean age: 25.4 ± 4.1 years	CI	Case History
Marran L, 20068	299 children. Age not specified Mean age: 11.5 ± 0.63 years	AI	CISS V-15
Sterner B, 200641	72 subjects. Age: 5.8–9.8 years	AI	Sterner Questionnaire
Vaughn W, 200642	91 children. Age not specified	AD + BD	19-Item COVD-QOL
Abdi S, 20057	120 children. Age: 6–16 years	CI + AI	Case History
Scheiman M, 200543	47 children. Age: 9–18 years	CI	CISS V-15
Scheiman M, 200544	46 subjects. Age: 19–30 years	CI	CISS V-15
Scheiman M, 200545	72 children. Age: 9–18 years	CI	CISS V-15
Rouse M, 200446	46 CI subjects. Age: 19–30 years 46 NBV subjects. Age: 19–30 years	CI	CISS V-15
White T, 200447	129 subjects. Age: 9–19 years	CI	19- Item COVD-QOL
Borsting E, 20039	392 children. Age: 7.6–14.8 years	CI	CISS 16 Items
Borsting E, 200348	47 CI children. Age: 9–18 years 56 NBV children. Age: 9–18 years	CI	CISS V-15
Adler P, 200249	92 subjects. Age: 5–35 years	CI	Adler Questionnaire
Cacho P, 200250	328 subjects. Age: 13–35 years	AI	Case History
Gallaway M, 200251	25 subjects. Age: 9–51 years	CI	Gallaway Questionnaire
Garcia A, 200252	69 subjects. Age: 13–35 years	AD + BD	Case History
Lara F, 200153	265 subjects. Age: 10–35 years	AD + BD	Case History
Borsting E, 199955	14 CI children. Age: 8–13 years 14 NBV children. Age: 8–13 years	CI	CIRS Symptom Questionnaire Parent version
Birnbaum M, 199956	60 subjects. Age: >40 years	CI	Birnbaum Questionnaire
Rouse M, 199854	415 children. Age: 8–12 years	CI	Case History
Porcar E, 199757	65 subjects. Age not specified Mean age: 22 ± 3 years	AD + BD	Case History
Gallaway M, 199758	83 subjects. Age: 7–32 years	CE	Case History
Russell G, 199359	15 subjects. Age: 9–34 years	AI	Russell Questionnaire
Matsuo T, 199260	9 children. Age: 6–16 years	AI + CI	Case History
Dwyer, 199261	144 children. Age: 7–18 years	AD + BD	Case History
Deshpande S, 199162	2162 subjects. Age: 15–35 years	CI	Case History
Mazow T, 198963	26 subjects. Age: 7–28 years	CI + AI	Case History
Rutstein R, 198864	17 subjects. Age: 7–39 years	AE	Case History
Chrousos G, 198865	10 subjects. Age: 10–19 years	AI	Case History

CI: convergence insufficiency, AI: accommodative insufficiency, AD: accommodative dysfunction, BD: binocular dysfunction, CE: convergence excess, AE: accommodative excess, NBV: normal binocular vision.