OPHTHALMOLOGY

Incomitant Deviations

Apr 11, 2021 by in OPHTHALMOLOGY Comments Off on Incomitant Deviations

Nature of Incomitant Deviations In some deviations, strabismus or heterophoria, the angle of the deviation varies as the patient moves the eyes to look in different parts of the field….

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Nystagmus

Apr 11, 2021 by in OPHTHALMOLOGY Comments Off on Nystagmus

Introduction Nystagmus is an eye movement disorder characterised by abnormal, involuntary rhythmic oscillations of one or both eyes, initiated by a slow phase ( Self et al., 2020 ). Jerk…

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Microtropia

Apr 11, 2021 by in OPHTHALMOLOGY Comments Off on Microtropia

Microtropia ( Lang, 1966 ), or microsquint, may be found as an apparently primary condition, or may be present as a residual deviation after the treatment of a larger strabismus….

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Amblyopia and Eccentric Fixation

Apr 11, 2021 by in OPHTHALMOLOGY Comments Off on Amblyopia and Eccentric Fixation

Amblyopia Definition Hippocrates in 400 BCE described amblyopia as ‘when the doctor and patient see nothing’ ( Day, 1997 ). Lyle and Wybar (1967) defined amblyopia as ‘a condition of…

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Eye Exercises for Heterophoria

Apr 11, 2021 by in OPHTHALMOLOGY Comments Off on Eye Exercises for Heterophoria

The preceding chapters on various heterophoric anomalies have described the general outlines for the management of these conditions. This chapter gives details of particular exercises which may be fitted into…

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Overview of Sensory Changes in Strabismus

Apr 11, 2021 by in OPHTHALMOLOGY Comments Off on Overview of Sensory Changes in Strabismus

Binocular Sensory Changes in Strabismus Diplopia and Confusion Diplopia occurs when a patient sees two images of one object. Fig. 12.1 A represents an adult with recent onset left esotropia….

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Anisometropia and Aniseikonia

Apr 11, 2021 by in OPHTHALMOLOGY Comments Off on Anisometropia and Aniseikonia

Binocular vision can be disturbed by large differences in the refractive error between the two eyes: anisometropia . When this is left uncorrected, central suppression areas can develop in the…

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Evaluation of Heterophoria

Apr 11, 2021 by in OPHTHALMOLOGY Comments Off on Evaluation of Heterophoria

Introduction A heterophoria only requires treatment if it is causing symptoms or impaired performance, if the binocular status is likely to deteriorate if it is not treated, or if the…

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