What is laser eye surgery? A laser

What is laser eye surgery? A laser is an intense, focused beam of light that can heat and destroy human tissue. Since the 1960’s, focused, carefully controlled lasers have been used for the treatment of human eye diseases. By carefully selecting the type and strength, a beam of laser can be fired into the eye to destroy diseased tissue or to prevent degenerative eye conditions from worsening. The use of laser in eye diseases is known as “laser photocoagulation” or “laser photoablation”. Laser photocoagulation can be used to treat diabetic eye diseases, such as proliferative diabetic retinopathy or macular oedema. It can also be used to treat some cases of age-related macular degeneration, chronic open-angle glaucoma, retinal tears and even treat premature babies that have retinopathy of prematurity. Laser photoablation is often used in laser eye surgery procedures such as laser-assisted in situ keratomileusis (LASIK) to correct refractive errors (inability of the eye to focus light due to a misshapen cornea). Lasers can be used to carefully reshape the cornea of the eye, to correct eye conditions like short-sightedness (myopia) or astigmatism. These procedures are increasingly common and show excellent results and can remove the need for corrective lenses, such as glasses or contact lenses.
LASER PHOTOCOAGULATION Laser photocoagulation therapy is used in certain types of eye diseases due to diabetes. As diabetes advances, the tiny blood vessels in the retina are vulnerable to damage and can result in sight-threatening conditions such as diabetic retinopathy and diabetic macular oedema. These conditions can be treated by laser, which can also be used in combination with other treatments, such as injections of steroids or anti-vascular endothelial growth factor (anti-VEGF) therapies (treatments that block the activity of VEGF which is a chemical that normally promotes growth of new blood vessels) into the eye. Diabetic retinopathy Laser photocoagulation is used in diabetic retinopathy, as the retinal blood vessels have begun to leak due to vessel damage from diabetes. This leaking can cause damage to surrounding tissue, as well as preventing oxygen from reaching cells supplied by those blood vessels. Worse still, new, more fragile blood vessels may grow (proliferative diabetic retinopathy), which can also leak and cause damage. Laser photocoagulation can block off any abnormal blood vessels and stop the damaging leaks, as well as destroy tissue that is stimulating the growth of these new, abnormal blood vessels. While a very effective treatment, laser photocoagulation is not without side effects. The procedure can be uncomfortable and individuals can experience transient blurring, glare sensitivity or difficulty with light-dark adaptation in the days and weeks after the procedure. Other possible side effects are rare and can also occur due to diabetic retinopathy itself. These include peripheral field constriction, night blindness, loss of eye muscle function, mild color vision changes, retinal detachment, glaucoma or burns to the cornea, iris or lens. LASER TREATMENT FOR CORRECTING REFRACTIVE ERRORS Refractive error can be managed through the use of glasses and contact lenses. However, refractive surgery using laser can reshape the curvature of the cornea to compensate for these errors and correct vision Various techniques and approaches to corneal remodeling are now in common use, including: 1: Photorefractive keratectomy (PRK) 2: Laser assisted in-situ keratomileusis (LASIK) 3: Laser epithelial keratomileusis (LASEK) 4: Femto lasik laser 5: Femto smile laser
WHAT IS PRK? In PRK, the outer layer of the cornea is removed and the central cornea is treated with laser, reshaping it to the necessary specification. The outer layer is not replaced after the procedure, but regrows over the next few days. The cornea stabilizes over the course of the next few months. WHAT IS LASIK? LASIK uses a precision cutting tool called a microkeratome to create a flap in the outer layers of the cornea. Once this flap is lifted, the underlying layer can then be treated with laser to the correct thickness. Once this is completed, the flap is replaced, allowing rapid healing. WHAT IS LASEK? LASEK is a hybrid procedure of PRK and LASIK. The outer layer of the cornea is treated with a chemical solution, making it easier to lift off. A corneal flap is then created and pulled back, so the inner layer of the cornea can be treated with laser. The outer layer is then repositioned and stabilises after 3 to 5 days. Another variant of this surgery is called Epi-LASIK, where the outer layer is separated mechanically rather than chemically. WHAT IS FEMTO LASIK? The Femto-Lasik laser operates on the principle of photo-disruption: with infra red laser energy the surgeon creates a precise pattern of small, overlapping spaces just under the surface of the cornea. The laser works at extremely fast speeds: pulses of 1 quadrillionth of a second or 1

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ما هي جراحة العين بالليزر؟ ليزر هو شعاع ضوء يمكن الحرارة وتدمر الأنسجة البشرية مكثفة ومركزة. منذ عام 1960، استخدمت أشعة الليزر المركزة، التي تسيطر عليها بعناية لعلاج أمراض العين البشرية. بعناية تحديد نوع وقوة، يمكن إطلاق شعاع الليزر في العين لتدمير الأنسجة المريضة أو للحيلولة دون تفاقم أوضاع العين التنكسية. استخدام الليزر في أمراض العيون المعروف "الليزر الضوئي" أو "الليزر فوتوابليشن". يمكن استخدام الليزر الضوئي لعلاج أمراض العين السكري، مثل اعتلال الشبكية السكري التكاثري أو تورم القرنية. ويمكن استخدامه أيضا لعلاج بعض الحالات المتعلقة بالعمر البقعي والزرق مفتوح الزاوية المزمن، والدموع الشبكية وعلاج حتى الأطفال الخدج التي لديها اعتلال الشبكية الخداجي. غالباً ما يستخدم ليزر فوتوابليشن في إجراءات جراحة العين الليزر مثل ليزر-وساعدت كيراتوميليوسيس في الموقع (اسيك) لتصحيح الأخطاء الانكسارية (عدم قدرة العين على تركيز الضوء بسبب قرنية ممسوخ). يمكن استخدام الليزر لعناية إعادة تشكيل قرنية العين، وتصحيح أوضاع العين مثل قصر النظر (قصر النظر) أو الاستجماتيزم. هذه الإجراءات هي شائعة بشكل متزايد، وإظهار نتائج ممتازة ويمكن إزالة الحاجة إلى عدسات تصحيحية، مثل النظارات أو العدسات اللاصقة.LASER PHOTOCOAGULATION Laser photocoagulation therapy is used in certain types of eye diseases due to diabetes. As diabetes advances, the tiny blood vessels in the retina are vulnerable to damage and can result in sight-threatening conditions such as diabetic retinopathy and diabetic macular oedema. These conditions can be treated by laser, which can also be used in combination with other treatments, such as injections of steroids or anti-vascular endothelial growth factor (anti-VEGF) therapies (treatments that block the activity of VEGF which is a chemical that normally promotes growth of new blood vessels) into the eye. Diabetic retinopathy Laser photocoagulation is used in diabetic retinopathy, as the retinal blood vessels have begun to leak due to vessel damage from diabetes. This leaking can cause damage to surrounding tissue, as well as preventing oxygen from reaching cells supplied by those blood vessels. Worse still, new, more fragile blood vessels may grow (proliferative diabetic retinopathy), which can also leak and cause damage. Laser photocoagulation can block off any abnormal blood vessels and stop the damaging leaks, as well as destroy tissue that is stimulating the growth of these new, abnormal blood vessels. While a very effective treatment, laser photocoagulation is not without side effects. The procedure can be uncomfortable and individuals can experience transient blurring, glare sensitivity or difficulty with light-dark adaptation in the days and weeks after the procedure. Other possible side effects are rare and can also occur due to diabetic retinopathy itself. These include peripheral field constriction, night blindness, loss of eye muscle function, mild color vision changes, retinal detachment, glaucoma or burns to the cornea, iris or lens. LASER TREATMENT FOR CORRECTING REFRACTIVE ERRORS Refractive error can be managed through the use of glasses and contact lenses. However, refractive surgery using laser can reshape the curvature of the cornea to compensate for these errors and correct vision Various techniques and approaches to corneal remodeling are now in common use, including: 1: Photorefractive keratectomy (PRK) 2: Laser assisted in-situ keratomileusis (LASIK) 3: Laser epithelial keratomileusis (LASEK) 4: Femto lasik laser 5: Femto smile laserWHAT IS PRK? In PRK, the outer layer of the cornea is removed and the central cornea is treated with laser, reshaping it to the necessary specification. The outer layer is not replaced after the procedure, but regrows over the next few days. The cornea stabilizes over the course of the next few months. WHAT IS LASIK? LASIK uses a precision cutting tool called a microkeratome to create a flap in the outer layers of the cornea. Once this flap is lifted, the underlying layer can then be treated with laser to the correct thickness. Once this is completed, the flap is replaced, allowing rapid healing. WHAT IS LASEK? LASEK is a hybrid procedure of PRK and LASIK. The outer layer of the cornea is treated with a chemical solution, making it easier to lift off. A corneal flap is then created and pulled back, so the inner layer of the cornea can be treated with laser. The outer layer is then repositioned and stabilises after 3 to 5 days. Another variant of this surgery is called Epi-LASIK, where the outer layer is separated mechanically rather than chemically. WHAT IS FEMTO LASIK? The Femto-Lasik laser operates on the principle of photo-disruption: with infra red laser energy the surgeon creates a precise pattern of small, overlapping spaces just under the surface of the cornea. The laser works at extremely fast speeds: pulses of 1 quadrillionth of a second or 1