Stage 1 or 4 FTMH, Stage 2-3 FTMH of > 18 months duration, Visual acuity >20/40 in study eye, FTMH related to high myopia (>6 dioptres), FTMH related to trauma, any other causes of decreased vision (ie corneal scarring, age-related macular degeneration, diabetic retinopathy, glaucoma if central and/or paracentral absolute visual field defects present), patient unable to understand English, patient unable to give informed consent.