Fixation Anomalies in Amblyopia

Fw, Brock; Givner, Isadore

doi:10.1001/archopht.1952.01700030794008

Cited by 41 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first is the eccentric fixation present in most amblyopic eyes (Brock and Givner, 1952). The first is the eccentric fixation present in most amblyopic eyes (Brock and Givner, 1952).…”

Section: Our Results Indicate That Accommodative Function In Human Ammentioning

confidence: 98%

Accommodative stimulus/response function in human amblyopia

et al. 1984

View full text Add to dashboard Cite

Three parameters are essential to describe static accommodative behavior in a comprehensive, quantitative manner: the slope of the stimulus/response curve, the depth of focus, and the tonic response. These parameters were obtained in amblyopes, former amblyopes, strabismus without amblyopia, and normals. Results showed that the accommodative response in the amblyopic eye was characterized by a reduction in the slope of the stimulus/response curve and increased depth of focus. Similar abnormalities but of lesser magnitude were found in the non-dominant eye of some former amblyopes and some strabismus without amblyopia. Orthoptic therapy always increased the slope of the stimulus/response curve in the amblyopic eye. We believe that the reduced accommodative responses found in amblyopic eyes reflect a primary sensory loss over the central retinal region that occurs as a result of prolonged, early, abnormal visual experience associated with the presence of strabismus and/or anisometropia.

show abstract

“…The first is the eccentric fixation present in most amblyopic eyes (Brock and Givner, 1952). The first is the eccentric fixation present in most amblyopic eyes (Brock and Givner, 1952).…”

Section: Our Results Indicate That Accommodative Function In Human Ammentioning

confidence: 98%

Accommodative stimulus/response function in human amblyopia

et al. 1984

View full text Add to dashboard Cite

show abstract

“…Gaze instabilities, [48][49][50][51][52] nystagmus, and eccentric fixation 35,42,53 could also contribute to increased steady-state accommodative error in amblyopic eyes, by causing the stimulus to fall on less sensitive retina, 54 or by inducing a smearing effect in the retinal image with subsequent blurring of moderate and high spatial frequency components. 41,48,55 Several studies have shown decreased accommodative lags and increased slopes of the accommodative stimulus-response function 22,35,54 with a reduction of eccentric fixation in amblyopic subjects.…”

Section: Discussionmentioning

confidence: 99%

Accommodative Performance of Children With Unilateral Amblyopia

Manh

Chen

Tarczy-Hornoch

et al. 2015

Investigative Ophthalmology & Visual Science

View full text Add to dashboard Cite

show abstract

“…Several factors act in concert to make detection and subjective appreciation of defocused stimuli difficult with the amblyopic eye (Ciuffreda et al, in press). They include reduced visual acuity (Shapero, 1971), depressed high spatial frequency suprathreshold contrast sensitivity (Hess and Jenkins, 1980;Hess and Bradley, 1980), eccentric fixation (Brock and Givner, 1952), abnormal fixational eye movements (Ciuffreda e^fl/., 1979b), fading of the target (Feinberg, 1956;Lawwill, 1968;Ciuffreda e? al., 1979a;Sireteanu and Fronius, 1981), and poor sustaining of accommodation (Ciuffreda et al, in press).…”

Section: Introductionmentioning

confidence: 99%

Measurement of Accommodative Amplitude in Amblyopia

Hokoda

Ciuffreda

1982

Ophthalmic Physiologic Optic

View full text Add to dashboard Cite

Monocular accommodative amplitudes were measured in amblyopic individuals by the subjective minus lens and push-up techniques and by objective dynamic retinoscopy. Accommodative amplitudes were always reduced in amblyopic eyes using the minus lens and retinoscopy techniques, but not with the push-up technique which inflated this measure. Owing to difficulty in detecting defocused stimuli with the amblyopic eye, it is suggested that the objective retinoscopic technique be used by clinicians for accurate assessment of accommodative amplitude in these patients.

show abstract

Fixation Anomalies in Amblyopia

Cited by 41 publications

References 5 publications

Accommodative stimulus/response function in human amblyopia

Accommodative stimulus/response function in human amblyopia

Accommodative Performance of Children With Unilateral Amblyopia

Measurement of Accommodative Amplitude in Amblyopia

Contact Info

Product

Resources

About