This compact and durable instrument is spectacle mounted and has the following features: 

·          Pupil size adjustment from individual parallax and convergence controls 

·          Two apertures, large and small patches 

·          Integrated red-free filter 

·          Halogen light source 

·          Detachable blue and yellow filters 

·          Dustproof 

·          Strong carbon fibre construction 

Supplied with 20D lens, scleral depressors, rechargeable power pack, spare bulb, diffuser and carrying case.