Thursday, February 14, 2008

ZYOPTIX Laser Surgery

ZYOPTIX Laser Surgery

Human eye is an optical marvel Light rays pass through the clear lens which focuses onto the screen at the back of the eye called retina There are billions of photo receptors which convert the image into electrical impulses that are transmitted into the brain When corena lens or eye is in abnormal shape light cannot focus accurately on retina and images are blurred The most common eye defects are Myopia which is Nerasightedness Hyperopia which is Farsightedness and Astigmatism Zyoptic laser is based on the wave font technology which uses systems more precise and less invasive than any other known technique developed so far Zyoptix treatment is the preferred choice for refractive surgery by surgeons worldwide There is no need for any injections sultures and hospitalization Clarity of your vision can ba regained withon hours of surgery Both eyes can be treated and cured the same day itself

Conventional lasik corrects only small spherical powers whereas Zyoptix can correct all powers perfectly and more accurately than Lasik Zyoptix is considered as the safest refractive error correction method since the software attached with the machine is inbuilt with various counterchecking mechanisms cataract surgery,corrective eye surgery,laser eye surgery,laser eye surgery clinics,laser eye treatment,laser vision correction,lasik clinic,lasik eye surgery,zyoptix surgery Zyoptix laser has a higher potential for perfect vision with reduced chance for visual compromise unusual corneal shapes or for thos who want the best visual outcome will benefit from Zyoptix Every patients eye differs in corneal thickness shape and pupil size Zyoptix technology analyses the entire visual systems from the corneal surface through the crystalline lens of the eye The new Aberrometer selectively measures the refractive power of the eye at more than 50 sites The measurement performed this way is designed to produce customized individual result

The very latest development in laser eye treatment from Bausch and Lomb is a system called Zyoptix a system that takes LASIK to a new frontier Essentially Zyoptix Personalised Vision SolutionWith Zyoptix treatment is designed specifically to treat your individual vision errors Each Zyoptix assessment involves an extra diagnostic screening process to let the surgeon understand your vision better and select the most suitable solution for you In the Zyoptix system the latest most advanced technology is used to detect and treat very small vision errors Zyoptix like standard treatment is very fast and virtually painless In the worlds largest study evaluation of patient data comparing Zyoptix treatment with standard LASIK Zyoptix patients had significantly better vision than patient given Bausch Lomb standard LASIK Although based on the same technique of standard Lasik Zyoptix is a much more advanced form of LASIK Specifically Zyoptix is different because its highly sophisticated technology allows the surgeon to Examine each eye for previously unseen details Known as aberrations Plan the treatment that can correct individual errors and aberrations in each eye Programme a laser with a combination of smaller and larger beams to deliver a precise treatment a treatment that is unique to each patient
ZyoptixTM surgery provides several advantages over traditional Lasik surgery Less postoperative discomfort as the cornea is only slightly disturbed it is rare for the Lasik patient to experience discomfort Minimal irritation is expected initially With PRK to takes about 3 days for the surface epithelial layer to regenerate and some pain or discomfort is likely in this time LASEK lies between PRK and LASEK in terms of discomfort Faster Visual Recovery as the epithelium is only minimally disturbed during LASIK the recovery is usually very fast with the majority of patients having a good level of unaided vision by the next day Useful vision in PRK occurs only when the epithelium has regrown and vision may take a little longer to become clear Lower incidence of corneal haze and scarring with ZYOPTIX corneal haze is a significant side effect of PRK particularly with higher refractive errors Haze can cause or exacerbate symptoms such as glare and haloes and contribute to myopic regression LASIK allows surgeons to approach higher errors with greater confidence in relation to the end refractive result Faster stability less fluctuation through the healing process i e regression and decreased corneal haze or scarring offers a faster and more stable correction with LASIK For mild to moderate degrees of myopia up to 5 0 dioptres LASIK provides similar clinical results to PRK but visual rehabilitation is improved For several degrees of myopia over 5 0 dioptres improved clinical results and a lower incidence of complications such as haze and steroid usage make LASIK the procedure of choice.

LASIK eye surgery

LASIK eye surgery
LASIK is a surgical procedure intended to reduce a persons dependency on glasses or contact lenses LASIK stands for LaserAssisted In Situ Keratomileusis and is a procedure that permanently changes the shape of the cornea the clear covering of the front of the eye using an excimer laser A knife called a microkeratome is used to cut a flap in the cornea A hinge is left at one end of this flap The flap is folded back revealing the stroma the middlesection of the cornea Pulses from a computercontrolled laser vaporize a portion of the stroma and the flap is replaced
The surgery improves the vision in patients who have nearsightedness farsightedness and astigmatism LASIK surgery usually takes less than one minute per eye Treatment involves reshaping the cornea the protruding portion of surface of the eye to improve vision A large percentage of nearsighted farsighted and astigmatic patients are potential candidates for LASIK Patients who are 18 years of age or older have healthy eyes that are free from retinal problems corneal scars and any eye disease are suitable Along with being medically suitable the best candidates are people with a lifestyle or occupation in which they are dissatisfied with their contact lenses or glasses By having an evaluation examination and consultation with you the doctor will be able to determine if you are a good candidate

Advantages of LASIK surgeryThe LASIK technique takes less than 30 minutes to perform and is very effective The technical advancements incorporated in the LASIK technique eliminates the clinically significant risks leading to visual impairment after a refractive surgery Most surveys show that 9298% of people who undergo the surgery are satisfied with the results The LASIK surgery done on the most sensitive part of the eye and is not reversible Even after a LASIK surgery a person may require reading glasses during midlife The moments after a major lifealtering event are usually filled with joy laughter and camaraderie but this usually doesnt happen after surgery LASIK surgery is no different than any other surgery but its drawbacks may be a little different than others The results of LASIK surgery are much akin to the results of being pestered by a pet day after day Instead of the healing of bruises or incisions LASIK surgery is accompanied by more burning and itching of an area that you are completely unable to scratch or cool At this point any touching of the eye could undo everything the surgery just repaired Your vision will be blurry because of the watering and tearing up of your eye but you cannot under any circumstances touch your eye The eye may appear dry or bloodshot for several days if this occurs you should consider taking time off of work If you experience severe pain from LASIK surgery at any time you should contact your surgeon Within 24 to 48 hours after your surgery you should have a postoperative exam to make sure everything is healing well At regular intervals after the LASIK surgery up to six months you should continue seeing your doctor for checkups At the first visit after LASIK surgery your doctor will remove the shield and make sure your eye is responding correctly to the surgery You will not be able to use contact lenses for sometime to keep from further irritation and you may have to use drops or artificial tears to help with lubricating the eye

The possibility of complications or imperfect vision after LASIK vision correction can be greatly reduced if you simply find out if you are a good prospect for the surgery Not everyone who wants LASIK vision correction is necessarily a good candidate to have the surgery You should consider a few things before you settle on LASIK If you dont like to take a chance every now and then you probably shouldnt have LASIK vision correction There are possibilities of complications as a result of LASIK that you should research before having the procedure done If having LASIK vision correction could affect your career or is not covered by your insurance you should think of another alternative The cost of LASIK is getting cheaper but is still quite expensive and youll want to make sure it isnt prohibited by your employer You must be an adult with refractive stability to be accepted for LASIK vision correction Refractive instability is determined by patients who are 20 or younger with fluctuating hormones due to such things as diabetes or someone who is pregnant or breastfeeding or taking medications that cause fluctuation in vision Preparing for any type of surgery is an unenviable and tedious process You must make sure you have everything ready and your body in tiptop shape While preparing for LASIK eye surgery may not be quite as difficult there are some things you need to prepare for before LASIK You definitely need to stop wearing your contact lenses in the weeks leading up to your consultation before LASIK Since the surgery is dependent on the shape and measurement of your cornea you must let it regain its shape Lenses sometimes reshape the cornea themselves causing problems with LASIK

Soft contact lenses should be removed and not worn for at least two weeks prior to your LASIK evaluation Rigid gas permeable lenses should be removed and not worn for at least three weeks prior to LASIK evaluation Hard lenses should be removed and not worn for at least four weeks prior to LASIK evaluation When you meet the doctor to discuss LASIK eye surgery you should let him know a few things about yourself Let the doctor know about any past or present medical and eye conditions as well as all medications you are taking or are allergic to It is important that you disclose all of this to your doctor before deciding if LASIK is right for you After you have disclosed this personal information to the doctor you should then discuss if you are a good candidate for LASIK surgery Let him explain to you the risks benefits and alternatives of the surgery as well as what you can expect from beginning to end
You should stop using any lotions perfumes or creams the day before the surgery as well as any makeup that may cause debris to get in the eye The doctor may even request that you scrub and wash out your eyes for a good time before LASIK surgery to prevent the chance of any type of infection Finally you should definitely arrange with a loved one for transportation to and from the LASIK surgery Before LASIK surgery some doctors will arrange for you to take some medicine to help you relax that could impair your vision and reaction time After LASIK surgery you may need a few days to recover your vision hence the need to arrange for a drive home

LASIK has advantages over other procedures including a relative lack of pain afterward and the fact that good vision is usually achieved almost immediately or at least by the very next day LASIK Eye Surgery Laser vision correction gives most people the freedom to enjoy their normal daily activities without the dependence of corrective lenses It also allows people to pursue careers that they would not have been eligible for without excellent vision In general laser vision correction can make your life much simpler and more enjoyable An instrument called a microkeratome is used in LASIK eye surgery to create a thin circular flap in the cornea Another newer way of making the flap is with a laser The surgeon folds the flap back out of the way then removes some corneal tissue underneath using a laser The laser uses a cool ultraviolet light beam to precisely remove very tiny bits of tissue from the cornea to reshape it When the cornea is reshaped in the right way it works better to focus light into the eye and onto the retina providing clearer vision than before The flap is then laid back in place covering the area where the corneal tissue was removed.

CATARACT Surgery

CATARACT Surgery

Normally the lens of the eye is clear and allows light rays to pass through easily When a cataract develops the lens becomes cloudy and opaque The light rays no longer pass through the lens easily so the patient cannot see clearly
Cataract is not a new growth or a film over the eye In most cases it is just part of the aging process
There are many types of cataracts
A change in the chemical composition of the lens causes most cataracts The following are the various types of cataracts

Senile Cataract This is the most common type of cataract comprising 80 percent of the total cataracts It occurs in patients above the age of 50
Congenital Cataract Cataracts in children are rare They can be caused by infection of the mother during pregnancy or they may be hereditary
Traumatic Cataract Eye injuries may cause cataracts in patients of any age

Secondary Cataract Eye diseases like glaucoma iritis eye tumours and diabetes may cause cataracts

Druginduced Cataract Prolonged treatment with steroid drugs either for local e g allergic conjunctivitis or systemic diseases e g asthma may lead to cataract formation

Symptoms of Cataract
Cataract formation is not associated with signals such as pain redness or tearing The common symptoms are Blurring or dimness of visionFeeling of a film over the eyesSensitivity to light and glareChange in colour of pupil.Double vision dulling of colour sense Cataract cannot be cured by medicines or spectacles Removal of the clouded lens through surgery is the only treatment

Routine method old method
After administering a local anaesthesia a 10 mm incision is made in the eye The cataract lens is removed and it may be replaced by an Aphakic glass The incision is then closed with sutures After the surgery glasses with high power called ophakic spectacles are prescribed to the operated person Intra Ocular lens IOL is a tiny transparent convex lens It is made of polymethyl methacrylate a harmless plastic substance Unlike contact lens an IOL stays permanently in the eye and does not cause irritationAfter administering a local anaesthesia a 10 mm incision is made in the eye The clouded lens is removed and replaced by an IOL and the incision is then closed with sutures The entire procedure takes only 15minutes .Phaco or sutureless surgery with implantation of IOL
After giving a local anaesthesia a 5mm incision is made in the eye The cataract lens is broken into small pieces by a machine with ultrasonic waves and removed with a needle A specially prepared IOL is inserted into the eye and the wound heals without sutures Early surgery can be done so that patient need not wait for the cataract to mature,SmallIncision,No sutures and no need of suture removal,No irritation no watering ,Early return to work ,No need to continue drops for a long time,No need for hospital stay.Even if the patient stays it is only for a short time.Only one postoperative visit ,Stable refraction after one month The ophthalmic surgeon decides whether the patient can undergo phaco or not.

GLAUCOMA Treatment

GLAUCOMA Treatment

Glaucoma is a condition wherein the pressure of fluid within the eye hydrostatic pressures within the eye gradually increases to a level not tolerated by the sensitive tissues of the eye The optic nerve which is similar to a cable wire carrying visual images to the brain is the portion of the eye susceptible to damage from glaucoma Such damage is irreparable and visual loss due to glaucoma is irreversible There is a fluid filled chamber in the front of the eye called the anterior chamber It is filled with aqueous humour which bathes and nourishes the tissues of the eye If the drainage of this fluid is restricted for reasons yet unknown pressure builds up within the eye causing glaucoma One of the leading causes of blindness in India about 3 percent of the general population have some form of glaucoma Persons over the age of 40 are more likely to develop glaucoma However the disease may occur in people of all ages including newborns Persons with myopia diabetes systemic hypertension and family history of glaucoma have an increased risk In most cases of glaucoma the patient is not aware of the gradual loss of sight until vision is significantly impaired However if glaucoma progresses without adequate treatment the following symptoms may occur in some individuals Pain around the eyes when coming out from darkness, as soon as the person comes out of a cinema hall Coloured halo rings seen around light bulbs especially in the mornings and nights Frequent change of reading glasses headaches pain and redness of the eyes Reduced vision in dim illumination and during nightsGradual decrease of side vision with progression of glaucoma Blurring of vision A simple test with a device called the tonometer measures pressure within the eye This test alone cannot detect all glaucomas The back of the eye should be inspected to view the optic nerve after dilating the pupils Side vision may also be examined by a computerassisted simple test called perimetry visual field examination
The loss of vision due to glaucoma is irreversible However appropriate treatment and regular followup can preserve residual vision Earlier the diagnosis better the chances of arresting visual impairment For most people with glaucoma regular use of medications will control the increased fluid pressure However in some drugs may stop working after a period of time In these situations the ophthalmologist can help by adding or changing medications or by choosing another type of treatment laser or surgical methods Periodical eye examinations are therefore essential to ensure that the medications are working In some type of glaucomas called angle closure glaucomas laser treatment is the primary form of reducing the eye pressure This is a simple outpatient procedure which uses a strong beam of light to relieve the fluid pressure In open angle type glaucomas laser treatment is applied only if various medications fail to control the fluid pressure Medications need to be continued regularly even after laser treatment Laser treatment has very minimal complications but its effect in reducing the eye pressure may wear off over time In some persons with glaucoma medical or laser treatment is insufficient to arrest glaucoma and surgery is indicated But this treatment option has its risks and limitations and is reserved as the treatment of last resort Even after surgical treatment individuals with glaucoma should continue periodical checkups by an ophthalmologist and additional medications may be required indefinitely to control eye pressures

Diabetic Retinopathy Treatment

Diabetic Retinopathy Treatment Diabetics are twice as likely as nondiabetics to develop eye problems The most common eye complication in diabetes is diabetic retinopathy other complications are cataract and glaucoma Fifty percent of diabetics develop some degree of diabetic eye disease The risk of blindness is 25 times higher in diabetics than in nondiabetics Early detection and timely treatment of diabetic eye disease significantly reduces the risk of vision loss Diabetic retinopathy is often symptomless in the early stages Since only an ophthalmologist can detect early signs of diabetic retinopathy all diabetics should have their eyes examined at least once every year.
Diabetes causes weakening of the blood vessels in the body The tiny delicate retinal blood vessels are particularly susceptible This deterioration of retinal blood vessels accompanied by structural changes in the retina is termed diabetic retinopathy and will lead to loss of vision Diabetic retinopathy is gradual in onset and is related to the duration of diabetes High blood glucose levels high blood pressure and genetics influence the development and progression of diabetic retinopathy
Eye examination in diabetic retinopathy Every diabetic is a potential candidate for diabetic retinopathy There are no symptoms at the initial stages Periodic eye examination with dilated pupils is the only way to detect early disease and prevent further deterioration of vision Diagnostic tools such as a slit lamp ultrasound and procedures such as fluorescein angiography are used in addition to an ophthalmoscope to assess whether the patient has diabetic retinopathy or other eye problems.

Fluorescein Angiography is a magnified photography of the retina using an injectable dye It helps classify the condition record changes in the retinal blood vessels decide on the mode of treatment and evaluate the treatment Lasers are widely used in treating diabetic retinopathy Lasers are formed by an intense and highly energetic beam of light They can slow down or stop the progression of diabetic retinopathy and stabilise vision Laser treatment is usually performed as an outpatient procedure The patient is given topical anaesthesia to prevent any discomfort and is then positioned before a slit lamp The ophthalmologist directs the laser beam precisely on the target with the aid of the slit lamp and a special contact lens Absorption by the diseased tissue either seals or destroys the tissue Additional treatment may be required according to the patients condition
Some patients may experience side effects after laser treatment These are usually temporary Possible side effects include watering eyes mild headache double vision glare or blurred vision In the event of sudden pain or vision loss the ophthalmologist must be contacted immediately In some patients there may be bleeding into the vitreous or the vitreous may pull the retina reducing vision severely In such instances a surgical procedure called vitrectomy replacing the vitreous by a clear artificial solution is performed Vitrectomy is done only after other forms of treatment have been unsuccessful Vitrectomy is a type of eye surgery that treats the disorders of the retina and the vitreous The retina is the lightsensing tissue at the back of the eye The vitreous is the clear jellylike substance that fills the middle of the eye The Vitreous is removed during vitrectomy surgery and usually replace by a salt water solution