Holi is a celebration of colour, joy, getting together with family and friends, and food. Everyone in the nation is eager to celebrate Holi with their loved ones now that it is just around the horizon. Holi is a festival…
The keratometer is a specialized instrument used by optometrists and ophthalmologists to measure the curvature of the cornea. This measurement is important because it helps optometrists/ophthalmologists diagnose and manage a variety of eye conditions, such as astigmatism and keratoconus. In…
Steps of the cross-cylinder to Spherocylinder Step 1: Choose either one cross cylinder out of two, as the sphere. Step 2: Subtract the cross-cylinder which was taken as the sphere from the other cylinder which was not taken as the…
Another way of writing lens prescriptions is cross-cylinder form. Usually, this form is never used to write spectacle lens prescriptions. However, it gives you an in-depth understanding of the power of each meridian without the need to add or subtract. …
It’s a method of converting spectacle prescriptions from one cylinder form to another i.e. plus cylinder to minus cylinder or vice-versa Steps of simple transposition: Step 1: Axis change: If the axis of the cylinder is equal or less than…
A lensometer is an optical instrument that is used to determine the refractive power and the prescription of eyeglasses or contact lenses. It is a crucial tool in the field of optometry. Mainly used for measuring the back vertex power…
Retinoscopy is an optical diagnostic test used by eye care professionals to determine the refractive error of a patient’s eyes. It is a quick and accurate method of measuring the amount of correction required to produce a clear vision. The…
Eye testing has come a long way since the traditional charts and lenses. The advent of technology has led to the development of computerized eye testing, which made the process of eye examination quicker. Is computerized eye testing always accurate?…
Introduction of JCC Jackson crossed cylinder is a combination of two cylinders of equal strength but of an opposite sign placed with their axis at 90 degrees to each other and mounted in a handle. Also known as the flip…
Colored contact lenses with power provide individuals with both a cosmetic and a functional solution to their vision needs. These contacts not only enhance the appearance of the eyes with a variety of shades, but also correct near-sightedness, far-sightedness, and…
