Opening Lines


Five tips for using an automated lensmeter

By Sue Corwin, CO, COMT, Jacksonville, FL

Lensmeters, which are used to determine the prescription of a spectacle lens or contact lens, record a number of measurements, such as the optical center of the lens, its power, the axis of the correcting cylinder and the cylinder power. While new lensmeters are automated, they still require some attention for accurate measurements. Consider these five tips to obtain the best results:

  1. Keep both sides of the glasses frame against the lens table to have the correct cylinder axis.
  2. Use the lens clamp to avoid pantoscopic tilt, which can cause a change in sphere and cylinder power. The lens clamp is used on the manual lensmeter and should be used on the automated one, too.
  3. Do not move the lens table once you find the optical center of the first lens. This helps in detecting small amounts of vertical prism when you go over to the second lens.
  4. If you are unsure whether the lens is a single vision lens or a progressive, “scan” the lens on the lensmeter, from the top of the lens to the bottom, observing the sphere power. If the sphere power changes more than 0.75 in the PLUS direction, they probably are progressives. Your automated lensmeter should have a special screen that assists you in measuring progressives.
  5. When using the special screen for measuring progressives, if you cannot obtain the “indicator” for the near ADD on a progressive, go to the bottom of the lens, slightly nasal, and measure there. When the glasses were made, the optical might have cut off the maximum ADD in order to fit the lens into a small frame.

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In Brief

Alcon has added to its portfolio products from its parent company, Novartis: ISOPTO Atropine (atropine sulfate ophthalmic solution 1%), CYCLOGYL (cyclopentolate hydrochloride ophthalmic solution, USP), MYDRIACYL (tropicamide ophthalmic solution, USP), CYCLOMYDRIL (cyclopentolate hydrochloride and phenylephrine hydrochloride ophthalmic solution), FLUORESCITE (fluorescein injection, USP 10%), Tetracaine Hydrochloride Ophthalmic Solution 0.5% STERI-UNIT, an ester local anesthetic.

The company also released enhancements to WaveLight Refractive Suite, used in the management of LASIK procedures. The updates include a modern interface, ergonomic design and expanded color options.

EyePoint Pharmaceuticals received FDA approval for YUTIQ, a fluocinolone acetonide intravitreal implant, for the treatment of chronic non-infectious posterior uveitis. The company anticipates product launch in 2019.

Staar Surgical Co. received FDA approval of the PMA Supplement for Visian Toric ICL for the correction of myopia with astigmatism.

Sun Pharma announced the FDA approval of Xelpros (latanoprost ophthalmic emulsion 0.005%) for the reduction of elevated IOP in patients who have open-angle glaucoma or ocular hypertension. Xelpros is BAK free.

I-MED Pharma Inc. has an exclusive distribution agreement with Quidel Corp. for I-MED’s I-LID ‘N LASH product line, I-RELIEF hot and cold therapy eye mask with thermabeads and SMTube.

Bill West has been appointed as IJCAHPO’s chief strategic officer/chief operations officer.

BSM Consulting appointed a chief information officer: Ash Shehata, healthcare IT expert. , a subscription-based education website that helps ophthalmology and optometry practices understand how to identify, diagnose, and treat patients with Dry Eye Disease, is now available..

IRIDEX announced its Cyclo G6 Glaucoma Laser System is used in 35 of the 38 hospitals that U.S. News and World Report ranked as “Best Hospitals for Ophthalmology.”