Crystalline Lens Densitometry Using Rotating Camera Scheimpflug Imaging System: Normative Data
Purpose
To assess lens densitometry in normal lenses derived from Pentacam Scheimpflug imaging system.
Methods
In this prospective study, 100 eyes of 50 volunteers without any evidence of cataract on detailed slit lamp and Pentacam evaluation. All eyes were examined and slit lamp examination and Scheimpflug measurements were done through a fully dilated pupil. Images were digitalized and lens densitometry was performed at two points; anterior and at mid point. Lens density was taken as value on image 120-300 degrees for the right eye and image 240-60 degrees for the left eye.
Results
100 eyes were evaluated of age 8-45 years (mean=22.069 years), out of which 31 were males and 19 were females. Mean lens densitometry for anterior point were 8.25 and for mid point were 6.78.
Conclusion
Normative data is essential for comparing crystalline lens with any opalescence that occurs due to various causes. It is an additive tool to measure the density of cataract and to aid in diagnosing very early cataracts.