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      Intraocular Lenses

      They are primarily used in cataract surgery, but their application extends beyond that. From monofocal to multifocal, and toric lenses, the variety of IOLs available today is vast. Each type serves a unique purpose, catering to different vision needs and lifestyles

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      Types of Intraocular Lenses

      Intraocular lenses (IOLs) are artificial lenses implanted during cataract surgery to replace the eye’s natural, clouded lens. They come in different types, each tailored to meet specific visual needs and lifestyle preferences.

      Selecting the right IOL is a critical part of your treatment plan. The choice directly affects your visual clarity and overall quality of life after surgery. Your ophthalmologist will work closely with you to determine the most suitable lens, taking into account your daily activities, vision expectations, and overall eye health.

      Here’s a closer look at the most commonly used types of IOLs:

      • Monofocal IOLs

        These lenses provide clear vision at a single distance—typically for either near, intermediate, or far vision. Most patients choose distance vision and use reading glasses for close tasks.

      • Multifocal IOLs

        Designed to offer vision correction at multiple distances, these lenses can reduce or even eliminate the need for glasses after surgery. They are ideal for people seeking greater independence from eyewear.

      • Toric IOLs

        Specifically made for patients with astigmatism, toric lenses correct both cataracts and corneal curvature, helping achieve clearer, more focused vision without the need for additional corrective procedures.

      Choosing the right IOL is not one-size-fits-all. A detailed consultation with your ophthalmologist will ensure the best option is selected based on your individual needs.

      Monofocal IOLs

      Monofocal IOLs are the most widely used type of intraocular lenses. Designed to provide sharp, focused vision at a single fixed distance—near, intermediate, or far—they offer dependable results for many patients undergoing cataract surgery.

      Most individuals who opt for monofocal IOLs choose to have them set for distance vision, allowing for clear sight when driving or watching television. For tasks that require close-up focus, such as reading or using a smartphone, reading glasses are typically needed.

      One of the key benefits of monofocal lenses is their lower risk of visual disturbances, such as glare or halos around lights—especially in low-light conditions. This makes them a practical and effective choice for patients seeking a straightforward and predictable visual outcome.

      Monofocal IOLs are an excellent option for those who prioritize visual clarity at one distance and are comfortable using glasses when needed for other ranges.

      Multifocal IOLs

      Multifocal IOLs are advanced lenses designed to provide clear vision at near, intermediate, and far distances, reducing or even eliminating the need for glasses after cataract surgery.

      These lenses have multiple zones with varying focusing powers, allowing your eyes to seamlessly shift focus between different distances. Whether you’re reading a book, working on a computer, or driving, multifocal IOLs are engineered to support a wide range of visual tasks.

      While many patients enjoy the convenience of reduced dependence on corrective eyewear, it’s important to note that some may need a short adjustment period as their brain adapts to processing images from different focal zones.

      Additionally, mild visual side effects, such as halos or glare—particularly around lights at night—can occur. These effects typically diminish over time, but it’s essential to discuss them with your ophthalmologist to determine whether this lens type aligns with your lifestyle and visual expectations.

      Multifocal IOLs are ideal for patients who value visual freedom and are comfortable with a brief period of adaptation for long-term benefits.

      Toric IOLs

      Toric IOLs are specifically designed to correct astigmatism, a common refractive error caused by an irregular curvature of the cornea. Unlike standard lenses, toric IOLs have different focusing powers across various meridians to compensate for this uneven shape.

      By directly addressing the asymmetry in the cornea, toric lenses offer sharper, clearer vision at a distance, often reducing or eliminating the need for glasses after cataract surgery in patients with moderate to high astigmatism.

      For optimal results, precise alignment of the lens during surgery is essential. Even minor rotations can affect visual outcomes, which is why these lenses are implanted with special attention to orientation.

      Toric IOLs are an excellent choice for patients seeking a more complete visual solution during cataract surgery—especially those who want greater independence from corrective eyewear.

      Intraocular Lens Replacement: When and Why?

      While intraocular lens replacement is not a routine procedure, it may be necessary in select cases where complications arise or the initial IOL does not meet the patient’s visual expectations.

      Common reasons for IOL replacement include:

      • Incorrect lens power, resulting in residual refractive errors and blurred vision

      • Lens dislocation, where the IOL shifts from its intended position

      • Visual disturbances such as glare, halos, or poor contrast sensitivity

      • Evolving visual needs over time, requiring a lens better suited to the patient’s lifestyle

      Although lens exchange can improve visual outcomes, it is a more complex procedure than the original implantation and carries additional surgical risks, such as infection, retinal detachment, or damage to eye structures.

      For these reasons, thorough consultation with your ophthalmologist is essential. Together, you can weigh the potential benefits against the risks and determine whether IOL replacement is the right choice for your individual situation.

      Preparing for Your IOL Implant

      Before undergoing intraocular lens (IOL) implantation, a detailed eye examination is essential. This allows your ophthalmologist to assess the overall health of your eyes and determine your specific vision needs.

      Precise measurements of your eye—such as its shape, size, and refractive status—will be taken. These measurements are crucial in selecting the correct lens power and ensuring optimal visual outcomes.

      Your lifestyle and visual preferences will also be carefully considered. Whether you prioritize reading without glasses, driving comfortably, or reducing dependency on corrective lenses altogether, these factors will help your doctor recommend the most appropriate type of IOL.

      How to Prepare for Your IOL Procedure:

      • Schedule a comprehensive eye exam well in advance.

      • Discuss your daily activities, visual expectations, and long-term goals with your ophthalmologist.

      • Learn about the potential benefits and risks of the procedure.

      • Arrange transportation, as you won’t be able to drive yourself home after surgery.

      • Follow all preoperative instructions from your doctor, including guidelines for eating, drinking, and medications.

      By preparing thoroughly, you can help ensure a smooth surgical experience and achieve the best possible visual results.

      Risks and Complications of IOL Surgery

      As with any surgical procedure, intraocular lens implantation is generally safe but may involve certain risks. Being aware of these potential complications can help you make an informed decision and feel more confident going into the procedure.

      Possible Risks Include:

      • Infection, bleeding, or inflammation: These are uncommon but possible complications that can typically be managed with prompt medical care.

      • Posterior capsule opacification (PCO): Often referred to as a “secondary cataract,” this condition may develop weeks or months after surgery. Fortunately, it can be effectively treated with a quick and painless laser procedure called YAG capsulotomy.

      • Residual refractive error: Although the goal is to reduce dependence on glasses, you may still require corrective eyewear for certain activities, such as reading or night driving.

      It’s important to discuss all potential risks and outcomes with your ophthalmologist in advance. This open conversation ensures that your expectations are realistic and that you’re fully informed about both the benefits and limitations of the procedure.

      Life After IOL Implantation: What to Expect

      Following IOL implantation, many patients experience a noticeable improvement in vision within the first few days. However, full visual stabilization may take several weeks as your eyes adapt to the new lens.

      Postoperative Care and Recovery Tips:

      • Carefully follow all post-surgery instructions provided by your ophthalmologist. This typically includes using prescribed eye drops to prevent infection and reduce inflammation.

      • Avoid rubbing your eyes and refrain from strenuous activities or heavy lifting during the initial healing phase.

      • It’s normal to experience temporary side effects such as light sensitivity, mild discomfort, or seeing halos around lights—these usually diminish as your eye heals.

      Long-Term Care:

      To maintain optimal eye health and ensure your IOL continues to perform effectively, it’s essential to attend regular follow-up appointments. These visits allow your eye care provider to monitor healing and address any concerns early on.

      By staying proactive with your eye care, you can enjoy clearer, more comfortable vision for years to come.

      Choosing the Right IOL for You: Factors to Consider

      Selecting the ideal IOL is a significant decision, as it not only impacts your vision but also enhances your overall quality of life. The lens you choose should align with your unique needs and preferences.

      Your lifestyle, profession, and hobbies all play a key role in determining which IOL is best for you. For example, if you love reading, crafting, or other close-up activities, a multifocal lens could be an excellent choice to give you clear vision at multiple distances.

      It’s important to have a detailed discussion with your ophthalmologist about your vision goals and daily activities. They will help guide you through the available options and ensure you make an informed decision that suits both your eye health and lifestyle needs.

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      Get ready to meet our physician staff, each of whom is an expert in their own branch and stands out with years of experience and success. Our physicians, who adopt the best practices of modern medicine, to whom you can safely entrust your health, are here to offer special solutions for your individual needs.

      Dr. Akin Ünal

      General Surgeon

      BIOGRAPHY

      He was born in Istanbul in 1982. He graduated from Kocaeli University, Faculty of Medicine. In 2012, he worked as an emergency medical assistant at Taksim First Aid EAH. Between 2013-2018, he specialized in general surgery at Haseki EAH. Then, between 2018-2020, he completed his compulsory service at Bitlis Tatvan State Hospital. Since 2020, with Dr. Hasan Lice, they have worked with the Sava team for bariatric surgeries. He is married and has two kids.

      Dr. Hasan Lice

      General Surgeon

      BIOGRAPHY

      He was born in 1967 in Istanbul. He completed primary, secondary, and high school in Istanbul. He graduated from Capa Medical Faculty in 1993.He worked as an assistant at Taksim Training and Research Hospital between 1994-1998. Between 1998 and 2012, he served on diagnosis and therapeutic solutions in General Surgery, Cancer Surgery, Laparoscopy Surgery, and Endoscopy in the 2nd Surgery Clinic at Haseki Training and Research Hospital. He is married and has 2 children. He speaks Turkish and English.

      Prof.Dr. Hanifi Onalan

      General Surgeon Assoc.

      BIOGRAPHY

      Education ;1992-1998 Istanbul University Faculty of Medicine1999-2004 Taksim Training and Research Hospital General Surgery Clinic Medical fields;Obesity treatment (Gastric balloon, Gastric Sleeve, Gastric Bypass, Gastric Botox)Gallbladder and bile duct surgeryBreast diseases and Breast surgeryAnal system diseases and surgery (haemorrhoids, anal fissure, perianal abscess and fistula surgery)Thyroid diseases and surgical treatmentHernia surgery (open and laparoscopic) (groin, umbilical, wound hernias)Colon, rectum, stomach diseases and surgical treatmentEndoscopic diagnosis and treatment interventions (gastroscopy, colonoscopy, ERCP, peg)Memberships;Turkish Surgery AssociationNational Association of Trauma and Emergency SurgeryTurkish Medical AssociationTOSS ( Turkish Bariatric Surgery Association )IFSO (International Federation for the Surgery of obesity and Metabolic disorders )Publications ;Can Postoperative Adhesions Be Prevented? The Effect of COX-2 Selective Inhibitor Rofecoxib on Intraabdominal Adhesion Model Experimental Study 19(4):145-149, 2005 Journal of Contemporary Surgery 2005 Osman YÜCEL, Yücel YANKOL, Ferda NİHAT KOKSOY, Hanifi ÖNALAN, Pelin AKBABA, Ayşenur AKYILDIZ İĞDEM Research Hospital 2nd General Surgery Clinic* and Pathology Laboratory**, IstanbulTractotomy and omentoplasty in a case of hepatic gunshot wounds A regional trauma and emergency surgery congress (international participation) 2001 A.Çelik, H. Önalan, N. Mecit, M.Er, O. YücelParenteral nutrition in patients undergoing resection for gis malignancies, early results National Surgery Congress 2002 Dr Demiray, Dr D.Gönüllü, Dr.H. Önalan, Dr S.Bilgiç, Dr F.N.Köksoy, Dr O.Yücel

      Mehmet Köksal

      Aesthetic Surgeon

      BIOGRAPHY

      He was born in Samsun in 1978. After graduating from Faculty of Medicine (Çapa Medicine) of the Istanbul University in 2003, he completed his 6-year residency training at Şişli, Etfal Training and Research Hospital Plastic Surgery Clinic and became a Plastic Reconstructive and Aesthetic Surgery Specialist.In 2008, he received training from world-renowned surgeons at the University of Plastic Surgery Clinic in the New York, United States and participated the surgeries together with the doctors from New York.He attended courses and congresses about topics such as Breast Aesthetics, Abdominal Aesthetics, Liposuction, Buttock Aesthetics, Rhinoplasty, Facial rejuvenation, Botox and Fillers.Between 2010 and 2012, he worked at the Plastic Surgery Clinic of Ahi Evran University Kırşehir State Hospital. Kırşehir has carried out many surgeries and innovations that could not be done before in its history.It constantly improves itself by participating in congresses and meetings at homecountry and abroad every year.Op.Dr.Mehmet Köksal still works in a Private Clinic in Istanbul.He is a member of Turkish Medical Association, Turkish Plastic Reconstructive and Aesthetic Surgery Association and Aesthetic Plastic Surgery Association.

      Prof. Dr. Rıfat Rasier

      MD

      BIOGRAPHY

      During his medical education and specialization in ophthalmology, he attended Louisiana State University School of Medicine in the United States, Stadtisches Klinikum Kemperhof in Koblenz, Germany, and The Western Eye Hospital, Imperial College in England. In 2007, he received medical equivalence from the General Medical Council of England and became a fully registered doctor in England. In addition to his ophthalmology education, he completed a master's program in Biomedical Engineering at Boğaziçi University in 2009. Continuing his career development without slowing down, Rasier completed his specialization in Ophthalmology at Bilim University in 2010.
      He fulfilled his mandatory service at Kırklareli State Hospital in 2012.
      He attained the title of "Associate Professor" in the Department of Ophthalmology in 2016. He completed his PhD in Biomedical Engineering at Boğaziçi University with a 4.0 GPA in 2017.
      As a result of his work at the Biomedical Engineering Laboratory of Boğaziçi University, Rıfat Rasier developed a procedure for laser-welding incisions in the transparent layer of the eye during cataract surgery, thereby closing the incision without the need for sutures. Current cataract surgeries either leave incisions open or suture them. Laser tissue welding experiments yielded positive results in closing incisions without stitches, reducing infection risks and shortening operation times.
      This work by Rıfat Rasier was published in an international book titled "Infrared Lasers for Corneal Tissue Welding."
      Awards Received:
      Best Publication Award, Turkish Journal of Ophthalmology, 2010: "Corneal Tissue Welding with Infrared Lasers of Different Wavelengths in Transparent Corneal Sections."
      Best Publication Award, Turkish Journal of Ophthalmology, 2011: "VEGF and IL-8 Levels in Vitreous Fluid in Proliferative Vitreoretinopathy Resulting from Rhegmatogenous Retinal Detachment."
      JCI Ten Outstanding Young Persons of Turkey Award, First Prize in Medical and Medical Inventions, 2010.
      Ministry of Industry, Teknogirişim Project Support, 2010.
      Prof. Dr. Necati Tanyolaç Award for Projects and Research in Biomedical Engineering and Technologies during Master's or Doctorate Studies, 2017.
      Second Prize for Best Scientific Poster, Turkish Ophthalmology Association National Congress, 2017. Academic Publications:
      A. Number of articles published in international refereed journals: 22
      B. Number of papers presented at international scientific meetings and published in proceedings: 10
      C. Number of articles published in national refereed journals: 25
      D. Number of papers presented at national scientific meetings and published in proceedings: 91

      Çağrı Geridönmez

      Medical Doctor

      BIOGRAPHY

      Dr. Cagrı Geridonmez was born in 1982 in Ankara, in the capital ofTurkey and is a graduate of medical faculty of Kirikkale University.In addition to his practice as a Chief Doctor in 2007 he obtained his medical degree and completed special medical program.Since he got his sertificate as a medical aesthetic he has performed more than 3500hair transplant operations in the one of the most well-known clinics ofTurkey.Currently he is managing a qualified medical team and performs hair restoration operations for patients from all countries of the world.Dr. Cagri’s interests also include improvement of hair loss treatment techniques and finding less invasive methods for hair transplant procedures.He participated in many local and international hair restoration surgery seminars and conferences. He received distinguishing certificates and diplomas for his valuable and well performed job.Now he is working on being a member of prominent international hair restoration organizations as İSHRS and ABHRS.In his spare time, Dr. Cagri enjoys to be engaged in sport activities, especially in motocross racing, car rally and Jiu-jitsu. He also enjoys being involved in different medical experiments on alternative medicine like acupuncture and bio resonance.Dr. Cagri’s passion is driven by the bonds he builds with his patients and the enjoyment he holds in providing high class medical service.

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