Iris is the coloured portion of the eye and it controls the opening called as the ‘pupil’. Indeed, diabetic patients who wear contact lenses must take extra care with lens hygiene and keeping the cornea moist and should seek advice early if any problem like irritation, blurring or redness develops. This decrease in sensation may predispose them to bacterial corneal ulcers and difficulties with contact lenses. Third Nerve Palsy and Sixth Nerve Palsy CorneaĪs diabetes can affect the nerves connecting the outer surface of the eye, diabetes patients can have decreased sensation in the eye, which may predispose them to weakness of the cornea. However, the recovery period may vary from 3-6 months. Nerve palsies due to diabetes recover completely if blood sugar is normalized. Sudden with the patient experiencing discomfort in the eye and double vision. Nerve palsy is a condition that results in an inability to move the eyes in a particular direction. The extra-ocular muscles around the eyeball that help in normal function of the eye are controlled by the 3rd, 4th and 6th nerves, which can be affected due to high blood sugar leading to nerve palsy. This can result in drying of the eyes and predispose them to infection of the outer colourless portion of the eye called ‘cornea’. In addition, among diabetic individuals, tear secretion can decrease as duration of diabetes increases, which causes burning, stinging and discomfort. Redness of the eyes accompanied by discharge and stickiness of eyelids called conjunctivitis is also common in diabetes. This condition is painless unlike the stye, however, may get infected and painful if diabetes is persistently in the higher levels. Another condition called as chalazion manifests as small swelling inside the lids. On control of blood sugar and with suitable antibiotics for the stye, the condition regresses. Recurrent styes are sometimes the first indications of diabetes and hence should prompt the individual to undergo blood tests. Recurrent occurrence of small boils known as styes may be observed in the lids characterised by pain along the lid margin, which is followed by a swelling. Scurf, or debris, found amid eyelashes in a patient with blepharitis and Stye Good control of diabetes with simultaneous treatment of blepharitis will bring about a quick recovery. In severe cases, redness and stickiness of the eyelashes with discharge as shown in the photograph may be present. Symptoms of blepharitis include: burning, itching, light sensitivity, and sandy, gritty sensation that is worse upon awakening. Blepharitis, chronic inflammation of the eyelids, is one of the primary causes for eye discomfort. The eyelids are more susceptible to infection and, hence, ulcerative blepharitis and styes are more commonly found in diabetes patients. Individuals with diabetes are generally prone to acute infections of any kind especially when there is uncontrolled diabetes.
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