Diabetes
Mellitus is a disorder of sugar metabolism. The blood sugar levels
increase due to deficiency of insulin and if left unattended various
body organs are damaged. One of the most commonly affected organ is
eye.
- REFRACTION :
As the blood sugar level fluctuate the spectacle power of a diabetic patient changes frequently. - CATARACT :
Diabetic patients are more likely to develop early cataract. - RETINAL DAMAGE :
The retinal changes seen in diabetic is called as Diabetic Retinopathy. - GLAUCOMA :
The new vessels that form on the retina and the angels of the eye cause the intraocular pressure to rise causing irreversible damage to the optic nerve.
Due
to the high blood sugar levels the blood vessels of the retina become
swollen and leaky. Once the blood seeps out of these leaky blood
vessels it deposits in the retina causing it to swell up like a
sponge. Retinal swelling causes fall in vision. Changes in the
retinal vessels lead to decrease in the oxygen supply to the retina.
To meet its oxygen demand newer weak abnormal blood vessels develop
on the retina. Since these new vessels are weak they tend to rupture
leading to sight threatening complications such as Retinal bleeding,
Retinal Detachment and Retinal death.
Diabetic Retinopathy is detected by a routine eye examination. It is important
to grade the stage of Diabetic Retinopathy in to Early (Non Proliferative Diabetic Retinopathy) or Advanced (Prolifarative Diabetic Retinopathy) to plan the line of treatment.
Clinical
examination is further supported by tests like;
- Fundus Flourescein Angiography
- OCT of macula
The
retinologist might suggest any of the following lines of treatment
depending on the severity of the disease.
- Retinal Laser Photocoagulation : Retinal laser treatment hels to reduce the oxygen demand of the diseased retina thereby causing the new vessels to shrink and stop further damage to the retina. 2-3 Laser sitting may be required depending on the severity of the retinopathy. After the laser treatment one may experience watering from eyes and mild headache or mild eye ache. These affects are temporary.
- Vitrectomy : This is surgical procedure by which the blood that has laeked in to the vitreous cavity (Eye gel) is cleared. In most patients vision improves by this surgery. One can return home on the same day of surgery. The eye drops and tablets prescribed at the end of the surgery have to be taken regularly for as long as the doctor suggests.
Patients
with Diabetic Retinopathy have problem while
- Reading
- Outdoor activity
- Socializing
- Regular eye examination is mandatory.
- Blood glucose, blood pressure and lipid profile are to be closely monitored and maintained as close to normal as possible with the help of a physician.
- Healthy diet and exercise help to keep the blood sugar levels normal
- If vision does not improve with the conventional treatment, Low vision Aids are prescribed
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