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Current practice patterns in biometry and intraocular lens calculation in Spain.

Francisco J Castro-Alonso1,2,3, David Mingo-Botín4,5,

  • 1UFR, Department of Ophthalmology, University Hospital Miguel Servet, Zaragoza, Spain.

European Journal of Ophthalmology
|June 4, 2025
PubMed
Summary

Spanish ophthalmologists widely use modern biometry technology and formulas like Barrett Universal II for intraocular lens (IOL) calculations. However, many desire further training to enhance their skills in biometry and IOL calculation practices.

Keywords:
Biometrycataract surgeryclinical practicesformulaeintraocular lens calculation

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Area of Science:

  • Ophthalmology
  • Medical Technology
  • Surgical Planning

Background:

  • Accurate biometry and intraocular lens (IOL) calculation are crucial for successful refractive outcomes in cataract surgery.
  • Understanding current practices and technological adoption is essential for advancing patient care in Spain.

Purpose of the Study:

  • To assess the current technical resources, user preferences, and common practices in biometry and IOL calculation within Spain.
  • To identify trends and areas for improvement in ophthalmic practice.

Main Methods:

  • An online survey was distributed to members of two Spanish scientific societies.
  • The survey comprised 28 questions covering professional affiliation, technical equipment, and routine biometry and IOL calculation procedures.

Main Results:

  • 300 valid responses were collected, with biometry primarily performed by optometrists, nurses, and ophthalmologists.
  • The IOLMaster 700 and 500 were the most common biometers; Barrett Universal II and Barrett toric were the preferred formulas for spherical and toric IOL calculations, respectively.
  • A significant portion of respondents (53.3%) indicated a need for additional training in biometry and IOL calculation.

Conclusions:

  • The survey provides an updated overview of biometry and IOL calculation practices in Spain.
  • While modern technologies and formulas are prevalent, traditional methods persist, indicating a need for enhanced training and evidence-based practice promotion.