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邢医生的博士学位研究方向是纳秒激光预防年龄相关性黄斑变性。她对视网膜激光特别感兴趣，并对不同时域激光对视网膜和视网膜色素上皮细胞的不同影响进行了广泛的研究。她的博士论文经常被用作眼科医生激光教学的教材。

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https://discovery.ucl.ac.uk/view/people/LZHEN99.html

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Lasers for Retina Diseases

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Pan Retina Photocoagulation (PRP)

Panretina photocoagulation (PRP) involves using laser to make small burns across the peripheral retina and is used in ischemic conditions where there are new blood vessels growing, for example in proliferative diabetic retinopathy or ischemic vein occlusion. 

This treatment will help to shrink new blood vessels. Usually one or more sessions of laser is required for complete treatment.

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Macular Laser

Macular lasers are usually used to prevent or treat leakage from tiny blood vessels in the macular.

It is usually used in conditions such as macular oedema from diabetes, vein occlusion and central serous retinopathy.

Ms Heng will discuss the suitability of the case and risks and benefits involved in treatment.

Other Lasers

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Photodynamic Therapy (PDT)

Photodynamic therapy (PDT) is the use of a photosensitive dye to transform light into chemical energy; this causes the release of free radicals which then reuslts in localised vascular occlusion ,with cellular destruction and minimal injury to nearby tissues. The procedure involves intravenously administered verteporfin, as the photosensitive dye, followed by the application of infrared laser. It is mainly used for central serous retinopathy and idiopathic polypoidal vasculopathy.

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Yag Capsulotomy

Yag Capsulotomy is usually performed after cataract surgery.  With age and several other causes, the natural lens of the eye becomes cloudy- this is known as a cataract and is removed during cataract surgery with replacement of a plastic lens implant . In a small proportion of patients, following cataract surgery, capsular thickening occurs and this stops the light reaching the back of the eye.

This causes gradual decrease in vision, glare and things start to look hazy again.

The aim of this laser procedure is to make a hole in the thickened lens capsule (also known as laser or yag capsulotomy).

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