Pupillary distance (PD) is the distance between the centre of pupils of the eye, measured in millimetres. An adult PD generally falls within the range of  54 mm to 68 mm and for children within the range of 41 mm to 55 mm. When and why PD measurement is important? Measured to align your spectacles with the line of sight (centre of the pupil ) for proper quality of the view. Distance PD is required when you buy Distance, Bifocal or Progressive lenses whereas Near PD is required only for the reading glasses. There are two types of PD Distance PD (DPD) Binocular PD Monocular PD Right PD (RP ..read more

Hyperopia (also known as farsightedness) is refractive condition found in children and adult, prevalently seen in children, in which the distant object appears to be clearer but the near objects fuzzy. This may be due to the decreased axial length of the eyeball (shorter eye than normal) or dioptric power of one or more of its refractive medium. Depending on grade whether moderate to severe it can lead to additional vision problems such as strabismus (squint), amblyopia (lazy eye). Symptoms of Hyperopia If you’re farsighted, you tend to have eyestrain, headaches, trouble focusing on near obj ..read more

What does the Myopia or Nearsightedness Actually Mean? Myopia (also known as Nearsightedness and Shortsightedness) is a most common refractive condition where the distant object appears to be blurred and the near object clear. In medical parlance, the eye having excessive refractive power for the axial length (AL). This may be due to the increased axial length or increased dioptric power of one or more of its refractive medium. So the correct term would be something like this “Incident parallel light from infinity are brought to focus in front of the retina (macula) with accommodation at rest ..read more

Phlyctenular Keratoconjunctivitis (PKC) is nodular inflammation secondary to an allergy, hypersensitivity reaction to a foreign antigen at the cornea and conjunctiva. Antigens of Staphylococcus aureus and Mycobacterium tuberculosis are most commonly associated. They are more commonly seen in females than males. In our practice, we generally see PKC patient’s come along with blepharitis. So check for any lid inflammation. Eradication of Mycobacterium tuberculosis (TB), makes the current scenario to be rare conjunctivitis. Clinical Picture Phlyctenules can occur anywhere on the ..read more