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Related Experiment Video

Updated: Jul 3, 2026

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography
07:44

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography

Published on: July 24, 2020

Grading nuclear cataract opacity by densitometry and objective optical analysis.

Dolores Ortiz1, Jorge L Alió, Jose Ruiz-Colechá

  • 1Vissum-Instituto de Oftalmológico de Alicante, Alicante, Spain.

Journal of Cataract and Refractive Surgery
|July 29, 2008
PubMed
Summary
This summary is machine-generated.

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Optical quality degrades as nuclear cataract (NO) progresses, linked to increased lens density. Objective measures like Scheimpflug photography and modulation transfer function (MTF) can assess early to moderate cataract stages.

Area of Science:

  • Ophthalmology
  • Optical Engineering

Background:

  • Crystalline lens opacification, or cataract, affects visual acuity.
  • Early detection of nuclear cataract (NO) is crucial for timely intervention.
  • Understanding the relationship between lens density and optical quality is essential.

Purpose of the Study:

  • To evaluate optical quality and densitometric characteristics in early stages of nuclear cataract.
  • To correlate lens density with objective measures of visual performance.

Main Methods:

  • Included 34 eyes with early nuclear opacity (NO1-NO3) using Lens Opacities Classification System III.
  • Measured intraocular aberrations, lens density via Scheimpflug photography, and optical quality using modulation transfer function (MTF).
  • Analyzed spatial frequencies at 0.5 MTF, cutoff MTF, and root mean square of aberrations.

Related Experiment Videos

Last Updated: Jul 3, 2026

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography
07:44

In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography

Published on: July 24, 2020

Main Results:

  • Lens density significantly increased with cataract grade (NO1-NO3).
  • No significant differences in intraocular higher-order aberrations were observed between groups.
  • A significant negative correlation was found between lens density and spatial frequencies at 0.5 MTF and cutoff MTF.

Conclusions:

  • Increasing lens density in nuclear cataract correlates with degraded optical quality.
  • Scheimpflug photography and MTF analysis provide objective characterization of early to moderate nuclear cataract.
  • Morphological changes, specifically increased lens density, are key factors in visual decline.