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No evidence of drugs was found, which eliminates the possibility of the macropsia in the adolescents being drug-induced. It is also unlikely for macropsia in adolescent children to be associated with a serious disease. [18] It is usually the macropsia or other visual disturbance which precedes the painful migrainous headaches.
In ophthalmology, Functional visual loss is the reduction in visual acuity or visual field that has no physiological or organic basis. This disease can come under the spectrum of functional neurological disorder or somatic symptom disorder under the categorization of the Diagnostic and Statistical Manual of Mental Disorders-5.
Childhood blindness is an important contribution to the national prevalence of the disability of blindness. [3] Blindness in children can be defined as a visual acuity of <3/60 in the eye with better vision of a child under 16 years of age. [4]
Micropsia is a condition affecting human visual perception in which objects are perceived to be smaller than they actually are. Micropsia can be caused by optical factors (such as wearing glasses), by distortion of images in the eye (such as optically, via swelling of the cornea or from changes in the shape of the retina such as from retinal edema, macular degeneration, or central serous ...
Subjective measurement of blind spot enlargement is done using visual field testing. [4] In the early stages, using FFA peripapillary hyperfluorescence may be observed. [4] Since OCT can be used to observe the microstructural alterations in the outer retina, it is the gold standard in diagnosing AIBSES. [2]
Young children with strabismus normally suppress the visual field of one eye (or part of it), whereas adults who develop strabismus normally do not suppress and therefore suffer from double vision . This also means that adults (and older children) have a higher risk of post-operative diplopia after undergoing strabismus surgery than young children.
Even though the field of view may be very narrow indeed, it is often possible for the person to detect and track movement. Movement is handled by the 'V5' part of the visual cortex, which may have escaped the damage. Sometimes a moving object can be seen better than a stationary one; at other times the person can sense movement but cannot ...
Leber's congenital amaurosis (LCA) is a collection of inherited, degenerative eye disorders that can reduce the strength of visual clarity or sharpness in infants and can cause childhood blindness. [ 14 ] [ 15 ] These eye disorders are mostly autosomal recessive diseases, and diagnoses of LCA are linked to multiple gene variants, including the ...