Blinding Eye Diseases

exp date isn't null, but text field is

Eye  Diseases  are  conditions  affecting  the  eye.  Diseases  of  most  important  are  those  leading  to  blindness or visual impairment. Blindness is defined as a presenting visual acuity of less than 3/60  or central visual field of less than 10º in the better eye. The definition of blindness in children and  infantsis the same as that in adults though there are different methods for testing vision in young  children  until  when  they  are  at  preschool  age  when  normal  visual  acuity  chart  can  be  used. The  common  causes  of  blindness  and  visual  impairment  among  adults  are  Cataract, Glaucoma, Cicatricial  Trachoma,  Vitamin  A  deficiency  (discussed  under  nutrition  chapter)  and  other  corneal  opacities, diseases of the Retina, uncorrected Refractive Errors and Low Vision. These are diseases  that  affect  both  eyes  however,  they  may  be  asymmetrical  in  their  course.  There  are  other  eye  diseases  that  do  not  lead  into  blindness  or  visual  impairment,  these  are  also  addressed  in  this  section. Patients presenting to eye clinic with uniocular eye complaint must have basic examination  of the fellow eye as well.