Volk Optical Laser Lenses

Distributor Product Presentation

December, 2009

Overview

• Volk Optical has introduced two new high resolution (HR) lenses for laser photocoagulation– The HR Wide Field for Pan Retinal Photocoagulation (PRP)

– The HR Centralis for focal and grid laser therapy

• Both lenses feature double aspheric designs and high grade, low dispersion glass which gives superior imaging quality.

• Both lenses may also be used as diagnostic lenses only.• The lenses improve upon and replace the previous generation

Superquad 160 and Area Centralis lenses.• Primary conditions diagnosed and treated are diabetic retinopathy

and maculopathy.• Lenses can also be used to diagnose and treat other conditions

such as retinal tears, breaks and holes.

HR Centralis Lens

• Lens for detailed posterior pole examination and laser focal/grid treatment

• Lens is an upgrade or replacement for:– Volk Optical Area Centralis– Ocular Mainster 1X Retina– Ocular Mainster Focal/Grid

• Main sales argument is better image quality and stereopsis at the extreme of the lens view

• Specifications: FOV 74º, magnification 1.08x, laser spot 0.92x

• Link to lens page on Volk Optical website

Features and Benefits

• Enhanced double aspheric design eliminates distortion and improves stereopsis to the periphery of the view

• Superior, high grade, low dispersion glass delivers unsurpassed resolution

• Improved capability with pupils as small as 4mm

• Reduced sized housing helps manipulation within the orbit

HR Wide Field Lens

• Lens for extreme wide field examination and laser PRP treatment

• Lens is an upgrade or replacement for:– Rodenstock pan fundus lens– Volk Optical Superquad 160– Ocular Instruments Mainster PRP 165

• Main sales argument is better image quality at the extreme periphery of the lens view

• Specifications: FOV 160º, magnification 0.5x, laser spot 2.0x

• Link to lens page on Volk Optical website

Features and Benefits

• Widest field of view and treatment area to the ora serrata

• Superior, high grade, low dispersion glass design eliminates distortion at the extreme periphery

• Much smaller and easier to manipulate within patient’s orbit

• Short length of lens helps manipulate in front of laser

Diabetes Overview

• Diabetic retinopathy serious complication of diabetes mellitus

• Commonest cause of blindness in 20-74 age range

• Two stage progression with recognised opthalmoscopically visible signs:– Background Diabetic Retinopathy

• Microaneurysms

– Proliferative Diabetic Retinopathy• Retinal haemorrhages, cotton wool spots

• Diabetic maculopathy is involvement of macula

Diabetic Retinopathy

• Early stage background diabetic retinopathy– Hemorrhages and

‘cotton wool’ spots

• Proliferative diabetic retinopathy– Neovascularisation

with weak ateries which bleed into vitreous - ’floaters’

Laser Therapy 1Pan Retinal Photocoagulation (PRP)• Objective is to destroy oxygen-

deprived tissue and prevent neovacularisation

• Lenses used are:– HR Wide Field– Superquad 160

Focal/grid therapy• Photocoagulation near macula• Lenses used are:

– HR Centralis– Area Centralis

Laser therapy 2

Lens summary

• Diagnostic– Digital Wide Field

• Slit lamp diagnostic retinal screening even through non-dilated pupil

– Digital High Mag• Slit lamp examination of

nerve fibre layer, macula and optic disk

– Digital 1.0x• Optic disc measurement

and photographic recording

• Treatment– H-R Wide Field

• Panretinal Photocoagulation (PRP) for diabetic retinopathy

• Retinal breaks and tears

– HR Centralis• Focal/Grid Laser for

diabetic macula oedema, microaneurysms and haemorrhage

• Macular hole