Parks–Bielschowsky three-step test (English Wikipedia)

Yeung, Pauline HN; Lam, Andrew KC (10 September 1998). "Fourth nerve palsy with monovision". Clinical and Experimental Optometry. 81 (5): 206–209. doi:10.1111/j.1444-0938.1998.tb06737.x. PMID 12482321. S2CID 25092239.
Manchandia, Ajay M. (November 12, 2014). "Sensitivity of the three-step test in diagnosis of superior oblique palsy". Journal of AAPOS. 18 (6): 567–571. doi:10.1016/j.jaapos.2014.08.007. PMC 4268244. PMID 25459202.
1 Archived 2014-02-03 at the Wayback Machine citing Harwerth, RS; Smith, EL 3rd; Boltz, RL; Crawford, ML; von Noorden, GK (1983). "Behavioral studies on the effect of abnormal early visual experience in monkeys: temporal modulation sensitivity". Vision Research. 23 (12): 1511–7. doi:10.1016/0042-6989(83)90163-3. PMID 6666052. S2CID 23006792.{{cite journal}}: CS1 maint: numeric names: authors list (link)

expertconsultbook.com (Global: low place; English: low place)

Elliott, David B. "6.16: Identifying the Defective Muscle: Parks 3-Step Test". Clinical Procedures in Primary Eye Care (4th ed.). Archived from the original on 21 February 2014. Retrieved 2 February 2014. citing von Noorden GK: Binocular vision and ocular motility: Theory and management of strabismus. London, CV Mosby, 2002.

Yeung, Pauline HN; Lam, Andrew KC (10 September 1998). "Fourth nerve palsy with monovision". Clinical and Experimental Optometry. 81 (5): 206–209. doi:10.1111/j.1444-0938.1998.tb06737.x. PMID 12482321. S2CID 25092239.
Manchandia, Ajay M. (November 12, 2014). "Sensitivity of the three-step test in diagnosis of superior oblique palsy". Journal of AAPOS. 18 (6): 567–571. doi:10.1016/j.jaapos.2014.08.007. PMC 4268244. PMID 25459202.
1 Archived 2014-02-03 at the Wayback Machine citing Harwerth, RS; Smith, EL 3rd; Boltz, RL; Crawford, ML; von Noorden, GK (1983). "Behavioral studies on the effect of abnormal early visual experience in monkeys: temporal modulation sensitivity". Vision Research. 23 (12): 1511–7. doi:10.1016/0042-6989(83)90163-3. PMID 6666052. S2CID 23006792.{{cite journal}}: CS1 maint: numeric names: authors list (link)

Wang, Frederick M. "Strabismus" (PDF): 6. Archived from the original (PDF) on 28 May 2010. Retrieved 2 February 2014. {{cite journal}}: Cite journal requires |journal= (help)

Helveston, Eugene M. (ed.). "Diagnosis and Classification of Superior Oblique Palsy". Project ORBIS International Inc. Retrieved 2 February 2014.
"Head Tilt Test." Head Tilt Test. Orbis Telemedicine, 2003. Web. 08 Dec. 2011. <http://telemedicine.orbis.org/bins/content_page.asp?cid=735-2858-4397-2804-3110-3021-3037>.
1 Archived 2014-02-03 at the Wayback Machine citing Spielmann A: A translucent occluder for study of eye position under unilateral or bilateral cover test. Am Orthopt J 36:65, 1986.
1 Archived 2014-02-03 at the Wayback Machine citing Harwerth, RS; Smith, EL 3rd; Boltz, RL; Crawford, ML; von Noorden, GK (1983). "Behavioral studies on the effect of abnormal early visual experience in monkeys: temporal modulation sensitivity". Vision Research. 23 (12): 1511–7. doi:10.1016/0042-6989(83)90163-3. PMID 6666052. S2CID 23006792.{{cite journal}}: CS1 maint: numeric names: authors list (link)
"Head Tilt Test". Archived from the original on 3 February 2014. Retrieved 2 February 2014.

Yeung, Pauline HN; Lam, Andrew KC (10 September 1998). "Fourth nerve palsy with monovision". Clinical and Experimental Optometry. 81 (5): 206–209. doi:10.1111/j.1444-0938.1998.tb06737.x. PMID 12482321. S2CID 25092239.
1 Archived 2014-02-03 at the Wayback Machine citing Harwerth, RS; Smith, EL 3rd; Boltz, RL; Crawford, ML; von Noorden, GK (1983). "Behavioral studies on the effect of abnormal early visual experience in monkeys: temporal modulation sensitivity". Vision Research. 23 (12): 1511–7. doi:10.1016/0042-6989(83)90163-3. PMID 6666052. S2CID 23006792.{{cite journal}}: CS1 maint: numeric names: authors list (link)

Elliott, David B. "6.16: Identifying the Defective Muscle: Parks 3-Step Test". Clinical Procedures in Primary Eye Care (4th ed.). Archived from the original on 21 February 2014. Retrieved 2 February 2014. citing von Noorden GK: Binocular vision and ocular motility: Theory and management of strabismus. London, CV Mosby, 2002.
Wang, Frederick M. "Strabismus" (PDF): 6. Archived from the original (PDF) on 28 May 2010. Retrieved 2 February 2014. {{cite journal}}: Cite journal requires |journal= (help)
1 Archived 2014-02-03 at the Wayback Machine citing Spielmann A: A translucent occluder for study of eye position under unilateral or bilateral cover test. Am Orthopt J 36:65, 1986.
1 Archived 2014-02-03 at the Wayback Machine citing Harwerth, RS; Smith, EL 3rd; Boltz, RL; Crawford, ML; von Noorden, GK (1983). "Behavioral studies on the effect of abnormal early visual experience in monkeys: temporal modulation sensitivity". Vision Research. 23 (12): 1511–7. doi:10.1016/0042-6989(83)90163-3. PMID 6666052. S2CID 23006792.{{cite journal}}: CS1 maint: numeric names: authors list (link)
"Head Tilt Test". Archived from the original on 3 February 2014. Retrieved 2 February 2014.