Cataract Eye Surgery
What Is a Cataract?
SYMPTOMS OF CATARACTS
WHAT CAUSES CATARACTS ?
TYPES OF CATARACTS
RISK FACTORS OF CATARACTS
HEAVY ALCOHOL USE
HIGH BLOOD PRESSURE
PREVIOUS EYE INJURIES
A FAMILY HISTORY OF CATARACTS
TOO MUCH SUN EXPOSURE
EXPOSURE TO RADIATION
There are numerous types of IOL (Intraocular lens) option that we use to replace the original one.
PREMIUM MONOFOCAL IOL (ASPHERIC IOLS)
The most suitable patient is the one who strongly desires not to wear glasses after having eliminated medical contra-indications and exposed side eff ects especially halos.
Patients with significant night activity should be avoided as halos at night may disturb patients especially when driving.
These halos disappear for 20% of patients during the first month and for 40% of patients during the first year presumably by a Neuro-adaptation phenomenon.
They persist to varying degrees for the remaining 40% without significant reduction in activities.
An orthoptic assessment will be done to eliminate any microtropia. Analysis of the cornea must be scrupulous and any disease of the tear film must be treated beforehand because meibomian gland dysfunction can greatly disturb patients postoperatively.
New apodized diffractive IOLs being pupil-dependent, photopic (Scheimpflug data) and mesopic (Colvard Pupillometer) measurement of the pupil will avoid narrow photopic or over dilated scotopic pupils.
Limits of 2mm in photopic and 5 mm in scotopic will avoid any pupillary refractive disorder postoperatively.
Astigmatism management is of paramount importance for obtaining ideal postoperative results with MFIOLs. A postoperative astigmatic error exceeding three-quarters of a diopter results in significant decline in visual quality.
A residual astigmatism lower than 0.50D does not seem to impair visual acuity, but we systematically treat astigmatism with toric lens if possible with the goal of no residual astigmatism.
Corneal limbal incisions could be performing to treat lower astigmatism.
Pathological capsular bags or capsular bags at risk because of uncontrolled healing should be avoided in order to prevent any decentration of these IOLs.
Finally a macular OCT analysis is performed when there is a doubt at fund us examination in order to eliminate an incipient macular traction syndrome or Epiretinal Membrane (ERM)
TYPES OF MULTIFOCAL INTRAOCULAR LENSES
Extended depth of focus (EDOF) IOLs
WHICH SURGICAL TECHNIQUE?
OUTLOOK OF A CATARACT
PREVENTION OF CATARACTS
7 SYMPTOMS OF CATARACTS
- Too much time in the sun without eye protection
- High blood sugar
- Using steroid medications
- Exposure to radiation
- Posterior subcapsular cataracts
- Nuclear cataracts in the center of the lens
- Cortical cataracts on the side of the lens, which appear as small streaks
- brain tumor
- corneal swelling
- multiple sclerosis
- stroke, cataracts
- brain injury
- uncontrolled diabetes or hypertension
- Graves’ disease
- myasthenia gravis