Introduction: One of the most significant and intriguing feature of the human body is the human eye. The physiological function of human eye is visual perception. There are three basic types of refractive errors namely: astigmatism, hyperopia and myopia. Astigmatism is a refractive condition in which parallel rays of light entering the eye are brought to a focus at two different focal lines which are perpendicular to each other, instead of focusing to a single focal point. It happens due to meridional variations in the curvature and/or refractive index and/or alignment of the eye‟s optical components along their principal meridians. Methods: A prospective study was conducted to know about prevalence of astigmatism and its visual and functional impact in patients at the Department of Ophthalmology, Netaji Subhash Chandra Bose, Subharti Medical College, and Meerut among 2736 subjects coming for evaluation of refractive errors. Results: Out of 2736 subjects 500 subjects had astigmatism of which 46.6% and 53.4% of the subject were male and female respectively. Maximum subjects were from the age group of 5-14 years (36.8%) followed by 15-24 (23.2%) and 25-34 years (19.6%). Minimum subjects were from the age group of >44 years (8%). Cylinder severity viz. ≤ 1DC, ≥1DC-≤1.5DC, ≥1.5DC- ≤2DC and >2DC was found in 492 (98.4%), 5 (1%), 2 (0.4%) and 1 (0.2%) subjects respectively. Cylinder severity viz. ≥1.5DC was reported only among subjects having age >44 years. ≤1DC cylinder severity was reported maximum among subjects with age group of 5-14 years followed by 15-24 years. Compound myopic astigmatism 54.2% was the most common type of astigmatism among the study subjects followed by simple myopic astigmatism 31.4%. Least common type of astigmatism was mixed type astigmatism 1.4% followed by compound hypermetropic astigmatism 5.4%. Maximum subjects with magnitude ≤ 1DC had compound myopic astigmatis 53.2% followed by simple myopic astigmatism 31.2%. Headache, reading difficulty, computer use, driving difficulty was revealed in 96.8%, 92.2%. 41.2% and 29.8%. Conclusion: Astigmatism was found more in females 53.4% as compared to males 46.6%. 2. Maximum subjects with astigmatism were from the age group of 5-14 years (36.8%) followed by 15-24 (23.2%) and 25-34 years (19.6%). 3. Compound myopic astigmatism 54.2% was the most common type of astigmatism among the study subjects followed by simple myopic astigmatism 31.4%. Least common type of astigmatism was mixed astigmatism 1.4% type followed by compound hypermetropic astigmatism 5.4%. 4. Simple hypermetropic astigmatism 7.6%, compound hypermetropic astigmatism 5.4% and mixed type of astigmatism 1.4% was associated more with age >35 years while simple myopic astigmatism and compound myopic astigmatism 31.4% and 54.2% respectively was found more in 5-14 and 15-24 year age group. 5. Cylinder severity viz. ≥1.5 DC was reported only among 1.4% subjects having age >44 years. <1DC cylinder severity was reported maximum 84.4% among subjects with age group of 5-14 years followed by 15-24 years. Headache, reading difficulty, computer use and difficulty in driving was revealed in 96.8%, 92.2%, 41.2% and 29.8% of the subjects respectively.