Cataract Surgery After LASIK eye procedure requires special expertise. There are many important points to think about. Lets divide the factors to consider into three groups. Calculations before Cataract eye procedure, Techniques during the cataract surgery and management after the cataract eye surgery.
Calculations before Cataract eye procedure
Its very important get certain data before proceeding with cataract eye surgery.
Length of the eye: This can be measure by ultrasound or laser. Laser detection with Iol Master or Lenstar.
Curvature of the cornea: This is where the fun and headaches begin. Lasik eye surgery changes the relationship between the front curvature of the cornea and its back curvature.
Power of the cornea: Detecting the true power of the Cornea is the holy grail of determing Iol power for emmetropia in patients undergoing cataract surgery after lasik eye surgeries.
Distance between cornea and the lens: Also known as anterior chamber depth.
Techniques during the cataract surgery
The style of removing the cataract and inserting the new lens.
Laser Or Manual Cataract Surgery: Will laser make corneal incisions too close to the flap?
Type of Implant – Monofocal or PIE: We need to to asses the optical zone on Corneal topography. Corneal pachymetry map needs to be evaluated.
Which PIE will work best for that eye: Crystalens or Tecnis multifocal could be an option. Some patients have loved the Restor.
Management after the cataract eye surgery
Correcting the residual refractive errors by laser or limbs relaxing incisions may be required. Aggressive management of dry eyes is essesntial.
LASIK eye surgery involves reshaping your cornea to correct a wide range of refractive errors – providing you with clear, sharp vision that either eliminates or greatly reduces your dependence on glasses and contact lenses. However, LASIK cannot prevent the development of cataracts later in life, since cataracts are a problem with the eye’s lens, not the cornea.
Because LASIK involves reshaping your cornea, you will need to consult with an experienced eye surgeon before undergoing cataract surgery in the future. Once your cornea is reshaped during LASIK, your cataract surgeon will need to perform a careful examination in order to determine the correct degree of power needed for your intraocular lens (IOL) – the artificial lens that is implanted during cataract surgery.
If an inexperienced surgeon takes the incorrect measurements, your vision may become out of focus following cataract surgery, requiring additional procedures to restore ideal vision. Thankfully, Dr. Khanna’s extensive experience with both LASIK and cataract surgery has equipped him with the skill necessary to accurately evaluate the changes in your eyes caused by LASIK surgery, ensuring the best possible vision with your IOL after cataract surgery. After removing the cataract, Dr. Khanna will perform a manifest refraction to determine the appropriate lens power for the IOL. Based on this information, the correct IOL will be implanted. You can read more about this topic in the bestseller book on cataract surgery.
If you have further questions about LASIK or cataract surgery, please contact The Khanna Institute today or call (877) 254-2662 to schedule an appointment with board-certified Beverly Hills LASIK surgeon Dr. Rajesh Khanna. We serve patients in Beverly Hills, Westlake Village, and surrounding areas of Los Angeles.
Everyone will experience presbyopia as they grow older. This universal eye disorder causes your eye’s natural lens to lose its flexibility, making it difficult to focus on objects up close. If you are currently using reading glasses or bifocals, you may be interested in some of the more permanent presbyopia treatment options that are now available.
Our experienced Beverly Hills ophthalmologist Rajesh Khanna, MD offers three main forms of presbyopia treatment:
Presbyopic Lens Exchange (PRELEX) – This revolutionary refractive surgery corrects presbyopia by replacing your aging natural lens with a new artificial lens. There are many different types of intraocular lenses (IOLs) available designed to treat a wide range of refractive errors, including myopia, hyperopia, and astigmatism.
Conductive Keratoplasty (CK) – Conducive keratoplasty uses radio frequency energy to steepen your cornea, allowing light to focus properly on your retina for clear near vision. CK can free you from your dependence on reading glasses or bifocals.
Monovision – Using LASIK technology, the cornea of one eye is adjusted for near vision, while the dominant eye is adjusted for distance vision.
There is no reason you should resign yourself to using reading glasses or bifocals for the rest of your life. Today’s presbyopia treatment options make it possible to enjoy clear vision at all distances again, freeing you to do and enjoy more on a daily basis.
To discuss presbyopia treatment in more detail, please contact The Khanna Institute today or call (888) 339-8143 to schedule a consultation with our experienced Beverly Hills eye doctor. We serve patients in Beverly Hills, Westlake Village, and surrounding areas of Los Angeles, California.
LASIK eye surgery and PRK both correct vision by re-shaping your cornea with targeted laser energy. The main difference is that in LASIK, a flap is created on the outermost layer of your cornea (the epithelium) to allow the laser to access the treatment area underneath. This flap is then replaced after treatment and allowed to heal. In PRK, no corneal flap is created; instead the entire epithelium is removed using the laser. This outermost layer then regenerates naturally over time.
Because of this difference in method, it may take longer for you to notice results with PRK compared to LASIK. However, the ultimate outcome is the same. Using a corneal flap in LASIK allows the eye to heal more quickly, meaning LASIK patients often notice improved vision as soon as the day after their procedure. PRK patients usually have to wait around three days before improved vision is noticeable, and they will experience light sensitivity for longer than a LASIK patient, as the cornea’s outer layer regenerates.
In short, there is no difference between the quality of your results with PRK and the quality of your results with LASIK. Both procedures can correct myopia, hyperopia, and astigmatism effectively. Since LASIK involves faster healing, it is usually recommended over PRK. However, PRK is ideal for patients who have a thin cornea, or specific corneal irregularities that would make the creation of a flap difficult. Dr. Khanna will discuss all of these factors with you in detail during your consultation.
If you have further questions about LASIK or PRK, please contact The Khanna Institute today or call (888) 339-8143 to schedule a free screening with our experienced Los Angeles LASIK surgeon Dr. Rajesh Khanna. We serve patients in Beverly Hills, Westlake Village, and surrounding areas of Los Angeles, California.
Most patients walk away from a single LASIK treatment with their vision restored to their satisfaction. However, there are certain rare situations where a follow-up treatment may be necessary. A variety of factors may necessitate a follow-up treatment, including medications you may have started after surgery, or simply the way that you heal. People with higher prescriptions are usually more likely to need LASIK revision treatment.
At The Khanna Institute, we cover post-op exams and revision surgery for up to one year after your original Beverly Hills LASIK surgery. Once a year has lapsed, the cost for follow-up treatment will vary. Usually, revision surgery is not performed until at least four months have passed since your initial procedure, to give your eyes time to heal and your vision time to stabilize.
LASIK revision surgery is even safer than the original LASIK procedure, since there is no need to create a new corneal flap. Instead, Dr. Khanna will use the same flap that was made during your last surgery to apply the revised treatment. Healing and recovery will be the same as it was after your initial surgery.
If you have further questions about LASIK, please contact The Khanna Institute or call us today at (877) 254-2662 to schedule a free LASIK screening. We serve patients in Beverly Hills, Westlake Village, and surrounding areas of Los Angeles, California.
LASIK eye surgery works by altering the shape of your cornea, allowing light to focus correctly at a single point. In order to access the part of your cornea that needs to be altered, a flap is created in the outermost layer (called the epithelium). In order to be a good LASIK candidate, your cornea must be thick enough to support the creation of a flap.
Pachymetry is the process of measuring the thickness of your cornea, using a medical device called a pachymeter. This method is used to determine your candidacy for LASIK, LRI surgery, and also to diagnose Keratoconus. Additionally, pachymetry is necessary for glaucoma patients, since the thickness of your cornea can have a significant effect on the accuracy of intraocular pressure readings.
If pachymetry reveals that your cornea is too thin for LASIK surgery, you may still be able to benefit from life-changing vision correction through an alternative procedure, such as LASEK, epi-LASIK, or PRK.
If you live in Beverly Hills, Westlake Village, or anywhere else in the greater Los Angeles area, please contact The Khanna Institute today to schedule a free LASIK screening with our experienced Los Angeles eye surgeon Dr. Khanna.
When you see an ophthalmologist for a regular eye exam, your eyes are tested to determine which lower order aberrations (LOAs) you have. There are three main LOAs: myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. Glasses and contact lens prescriptions are designed to correct these lower order aberrations.
However, LOAs are far from the only issues that can affect your vision. Wavefront technology – which is used in LASIK surgery – is capable of detecting higher order aberrations (HOAs) in addition to LOAs, allowing Dr. Khanna to pinpoint every problem that is interfering with your vision.
There are over 60 HOAs. Common examples include:
Ghosting (faint double vision)
Halos around light sources
Starbursts around light sources
Some of these irregularities have names, while others are expressed mathematically. Many HOAs are related to dim, low-level light conditions. By identifying your eyes’ HOAs in addition to LOAs, Wavefront technology provides the LASIK laser with a comprehensive “map” of all of your eye’s irregularities, allowing for more precise vision correction. Wavefront diagnosis can also be used in other refractive surgery procedures, including PRK, LASEK, and Epi-LASIK.
If you have further questions about higher order aberrations, please contact The Khanna Institute today or call (877) 254-2662 to schedule your free LASIK screening with Dr. Khanna. We serve patients in Beverly Hills, Westlake Village, and surrounding areas of Los Angeles, California.
We all know the damage that sunlight can cause to skin, but few people realize that the same UV rays that cause skin cancer and other problems can also harm your eyes over time. And unlike other parts of your body, the natural lens in your eye cannot repair itself once it becomes damaged. Over time, sun damage to your lenses can cause serious eye disorders and even loss of vision.
Sun damage can contribute to several different eye conditions, including:
It’s important to wear effective sunglasses that block both UV and blue light rays. It can be helpful to obtain sunglasses with larger lenses in order to better protect the delicate skin surrounding your eyes as well, which can be prone to skin cancer.
While everyone is at risk of eye damage from the sun, certain patients face an increased risk – including children under 10 years old, people with retinal disorders, people with lighter eyes, and anyone taking medication that increases light sensitivity in the eyes.
If you have further questions about proper eye care, please contact The Khanna Institute today or call (877) 254-2662 to schedule a consultation with our experienced Beverly Hills ophthalmologist Dr. Khanna. We serve patients in Beverly Hills, Westlake Village, and surrounding areas of Los Angeles, California.
Whenever you inhale cigarette smoke, nearly 4,000 chemicals are introduced into your bloodstream. If you are a habitual smoker, these chemicals will eventually damage your macula (the center of your retina), resulting in vision problems. Cataracts and macular degeneration are two common consequences of habitual smoking.
Macular degeneration is the leading cause of blindness in people 65+ years old in the United States, and smoking is the number one preventable risk factor of macular degeneration. In fact, according to a 2006 study in the British Journal of Ophthalmology, smoking is directly linked with 25% of macular degeneration cases that end in blindness. Secondhand smoke is also a problem. The study reveals that living with a person who smokes doubles your chances of developing macular degeneration.
Studies also show that the more cigarettes you smoke, and the longer you have been a smoker, the higher your risk of developing cataracts. Heavy smokers are up to three times more likely to have cataracts compared to non-smokers. The free radicals in cigarette smoke increase the oxidative stress in the lens of your eye, damaging important proteins and fiber cell membranes that ultimately result in the opacity of cataracts.
If you are a smoker, or have been a heavy smoker in the past and are concerned about your eye health, please contact The Khanna Institute today or call (877) 254-2662 to schedule an appointment with board-certified Los Angeles ophthalmologist Dr. Rajesh Khanna.
Uncontrolled diabetes poses a risk for eye health. When your blood sugar levels are not properly regulated, vision changes (such as blurriness) can occur, as well as retinal damage. The latter problem – a disease known as diabetic retinopathy – may eventually cause blindness if it is never treated.
If you have diabetes, but do not have retinopathy, you may still potentially be a good candidate for LASIK. However, diabetics do have a higher risk of complications after LASIK. Corneal abnormalities are common in patients with diabetes, which can cause healing after LASIK to be slow and imperfect. You may also experience increased light sensitivity.
In short, diabetes requires a thorough pre-surgical evaluation in order to determine your LASIK candidacy, and to anticipate possible problems. If your retina has fragile blood vessels, or if early cataracts are present in the lens, then the risks of LASIK will most likely outweigh the benefits. However, if no eye damage is found during your screening and your diabetes is adequately controlled, you can still enjoy the benefits of this life-changing procedure.
If you have diabetes and are interested in LASIK, please contact The Khanna Institute today or call (877) 254-2662 to schedule your free LASIK screening. We serve patients in Beverly Hills, Westlake Village, and surrounding areas of Los Angeles, California.