[A case of secondary retinal detachment caused by ocular toxocariasis].

Purpose: We report a case with bullous retinal detachment secondary to ocular toxocariasis.

Case: A 68-year-old man, who was a professional dog breeder, visited an ophthalmologist because of visual field defect in the left eye, and was referred to our clinic. The patient had bilateral cataract and bullous retinal detachment in the left eye.

Charles Bonnet syndrome and visual acuity--the involvement of dynamic or acute sensory deprivation.

A 61-year-old patient suffered from Charles Bonnet syndrome (CBS) while his visual acuity declined, whereas CBS subsided after he became blind. These findings suggest that reduction of visual acuity (dynamic or acute impairment) has a greater impact on the onset of CBS than low visual acuity (static or chronic impairment) per se in some patients. They may also explain why patients with low visual acuity do not always suffer from CBS.

The rarity of Charles Bonnet syndrome.

Charles Bonnet syndrome (CBS) is characterized by complex visual hallucinations in otherwise psychologically normal people. Estimates of the prevalence of CBS in different samples vary from a small percentage (around 1%), to a relatively large percentage (about 10%). The purpose of the present study is to determine whether CBS is rare or not.

[A case of optic nerve drusen associated with Grönblad-Strandberg syndrome].

Purpose: We report a rare case of optic nerve drusen associated with Grönblad-Strandberg syndrome.

Case: The patient was a 29-year-old woman who had pseudoxanthoma elasticum on her neck.

Observations: On eye examination, there were no abnormal findings in the anterior segment or ocular media.