Your complaints are blurred vision
in day light, without any pain, redness
or watering of the eyes and this symptom of blurred vision is seen only in left eye.
These symptoms may be probably because of early cataractous changes. The cataract which starts in the central part of the lens
called as posterior subcapsular cataract is known to cause blurred vision in day light. Cataract is usually seen after 40-50 years of age. You need to get examined by eye doctor for diagnosis and treatment.