This article on Epainassist.com has been critique by a medical professional , as well as checked for facts , to assure the reader the well possible truth .
We abide by a rigid editorial policy and we have a zero - tolerance policy regarding any degree of plagiarisation . Our articles are resourced from reputable on-line varlet . This article may contains scientific extension . The phone number in the digression ( 1 , 2 , 3 ) are clickable liaison to equal - brush up scientific papers .
The feedback tie “ Was this Article Helpful ” on this pageboy can be used to report content that is not exact , up - to - escort or questionable in any personal manner .
This article does not provide medical advice .
Cataract is the pathological condition in which the normal transparency of the lens is touch due to the degenerative change leading to opacification of the electron lens fibers . growing of the opacity of the lens is know as cataract .
What Are The Different Types Of Cataract?
Etiological Classification-
Morphological Classification-
Capsular Cataract-
Sub - Capsular Cataract-
Cortical Cataract
Nuclear Cataract-
Nuclear Cataract are classified as-
Embryonic Nuclear Cataract – This type of Cataract go on due to some genetic freakishness . This type of Cataract has a predominant genetic trait and thus make the inhibition of lens development at a very early phase of fetal development and hence involves only atomic part of the lens . This type of Cataract usually occurs bilaterally .
As Nucleus is the center most part of the lens , so it is characteristically present with little , rotund , central opacities which rest exactly at the center of the middle .
embryonal nuclear Cataract germinate during the intrauterine life so these are usually not progressive in nature .
Total Nuclear Cataract – In this , there is involvement of embryonic , fetal , and sometimes infantile nucleus . These are characterise by calcareous livid central opacities seriously affecting vision . These are ordinarily bilateral and non- progressing in nature .
Nuclear Senile Cataract – In this of Cataract , the Degenerative changes are just the intensification of age - related sclerosis of the nucleus part of the lens which is commonly colligate with drying up and compaction of nuclear part of the lens system which results in concentrated Cataract . There is a significant upgrade in the water - soluble protein content . However , the full protein subject and the ionic balance are maintained .
Cortical Cataract –
Cortical Cataract mention to as the development of the white or cloudy opacities in the lens cortex of the lens . Due to the participation of the cortex , these cataract are peripheral .
The diseased variety in the associated with cortical cataract are fall in the content of full protein , amino window pane , and potassium . There is also increase in the concentration of atomic number 11 and there is marked hydration of lens which have the coagulation of the lens proteins .
Maturation of Senile cortical Cataract-
A Sign Of Lamellar Separation – This stagecoach is two-sided . The other sign of senile change is the demarcation of the cortical fibers due to their separation by the increased hydration by the fluid .
stagecoach of Incipient Cataract- It is of two types :
Immature Senile Cataract – Here the opacification get on further to involve a large area of the lense . In advance stage , there is no differentiation of cuneiform and Cupuliform types . Some light cortex is still present so Iris vestige is seeable and the lens appear greyish livid .
Mature Senile Cataract – This stage is also known as a ripe cataract . Here the opacification completes and there is no readable cortex remains . The lens system appear pearly white in colour .
Hypermature Senile Cataract – When the mature cataract is leave in situ , and then the phase of hypermaturity sets in . In some patient , the cataract liquefy and the crystalline lens is converted into a milky old bag .
Sub - Capsular Cataract – This type of cataract develops just beneath the capsule , so is the name . The condensation is a bag like structure which enclosed the lens . It holds the lens in its shoes . Subcapsular cataract interfere with the sight and grow a Halo force and limelight . This type of cataract progresses rapidly and the symptoms become noticeable within few month .
Conclusion
Cataract is the developing opacities in the lens system . They are classified on the footing of etiology involved or on the basis of their morphology . atomic cataract is hard and cause an early mar in key vision . A cortical cataract modernise from fringe and progress to central part so there is the loss of peripheral theater in the acuate stage . Subcapsular cataract loosely develops in the posterior part of the lense below the capsule .
reference :
Also scan :
