You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Ex-Press glaucoma implant is made up of? and explain in detail?
Ans. d. Stainless steelIt is made of made of surgical-grade stainless steel, nonvalved filtration device designed to shunt aqueous humor from the anterior chamber to a subconjunctival filtration bleb.The EX-PRESS Glaucoma Filtration Device is intended to reduce IOP in glaucoma patients when medication and conventional surgical treatments have failed.The device channels aqueous humor through a secure lumen (of either 50 mm or 200 mm) to a half-thickness scleral flap, creating a subconjunctival filtration bleb.It is a minimally invasive glaucoma surgery (MIGS) to increase aqueous drainage.It has lower complications of ocular hypotony.The commonly used devices are as follows: Shunts using episcleral explants:* Ahmed glaucoma valve: Silicone* Molteno implant: Polypropelene plate and silicone plate* Baerveldt implant: Silicone Mini-shunts:* Ex-Press(tm) Mini-Shunt: Stainless steel * iStent(r): Titanium