Table 2

 Characteristics of patients who experience visual hallucinations

Patient 1Patient 2Patient 3Patient 4
Age (years)90787265
SexFemaleFemaleMaleMale
RaceChineseChineseIndianIndian
Number of family members staying with patient0411
Ophthalmic diagnosesBoth eyes: glaucoma, cataractRight eye: pseudophakic, left eye: cataractBoth eyes: glaucoma with superior arcuate visual field defectRight eye: clinically significant macular oedema, posterior capsule opacity, left eye: cataract
Visual acuityRight eye 20/60, left eye hand motionRight eye 20/100, left eye 20/60Right eye 20/30, left eye 20/40Right eye 20/60, left eye 20/100
Duration of symptoms1 year2 months1.5 years1 year
Frequency of symptomsDailyDailyEvery 2–3 days1–2 times per week
Duration of each episode5 minutes–1 hourSecondsSeconds5 minutes
Change in frequency of hallucinationSameStoppedIncreasedIncreased
HallucinationsChildren, Indian worker, corpseHalf body of a handsome male, flowersPeople, animals, sheets and handkerchiefsMan, dog, spectacles, and cup
Size compared to normal objectsNormalNormalSmallerNormal
Coloured imageYesYesYesYes
Solid/transparentSolidSolidVariableSolid
Movement of imagesYesNoYesYes
Clarity of image compared to normal imagesClearerClearerLess clearSame
Recurrent imageYesNoYesNo
Always occurs in same region of visual fieldNoNoNoNo
Occurs only in worse seeing eyeNoNoNoNo
Triggering factorsWatching television, eatingNoneWatching televisionNone
Actions that stop hallucinationsNoneTurn on lightsNoneApproach object
Emotional reactionAngryAngryPreviously worried, now no reactionNo reaction
Discussed with family membersYesYesYesNo
Reaction of family membersSupportiveSupportive“It’s your imagination”
Discussed with doctorNoNoYesNo
Reaction of doctor“Laughed and recommended no further action”