Uncontrolled diabetes will lead to blindness
Control your blood sugar. High blood sugar damages blood vessels in your retina.
That causes vision loss.
The medical term for this condition is diabetic retinopathy.
Here is a 10 min video that clearly explains how the condition develops...
There is a plethora of information on the internet on how to manage your diabetes / control your blood sugar - which we would recommend you sincerely follow.
The American Academy of Ophthalmology has more information on diabetic retinopathy here.
They also have an advisory video on Protecting Your Vision from Diabetes:

The Eye Centre has various solutions, and appropriate equipment to evaluate and treat retinal problems, some of which are:
Alcon Purepoint Retinal Laser
is used to treat the abnormal blood vessels that grow in the eye
Topcon Optical Coherence Tomography
provides a complete scan of the retina and optic nerve
Topcon Fundus Camera
is used to evaluate the state of blood vessels in the retina
do you need a thorough eye check up?
Here at LIONS MEDICAL - EYE & LASER CENTRE, we have experienced optometrist and ophthalmologists plus a range of sophisticated equipment to diagnose and treat a wide range of eye ailments and vision impairment.
You can book an appointment at any one of our Executive Centres (in Town and in Nyali) or visit the General Clinic (in Town) to be served on first-come-first-served basis.
Current Fees
Executive Appointments-
KES 2500/=* first visit
General Clinic (only in Town)
(No appointment required)
KES 300/=* per visit
*fees subject to change without notice