This K08 award will allow an experienced optometrist presently training in vision science to obtain the needed expertise in oculomotor systems, visual optics and neurophysiology to test important hypotheses regarding accommodation and the development of ametropias, in a challenging academic environment. The candidate's long-term career goals are to practice as an independent researcher in the fields of accommodation, eye movements, and visual processing. The immediate goal is to develop the skills to investigate the optical signals that specify ocular focus, the cone types that participate in the process, the visual mechanisms that might mediate the signals (Stiles-Crawford effect and fixation micro-saccades), and the neural pathways and transmit the signals. Essential skills include the ability to build, calibrate and maintain electro-optical systems for monitoring both fixational saccades and accommodation, to measure and alter the Stiles-Crawford function, and to produce computer-generated images that drive accommodation and isolate cone classes or visual pathways. The program will prepare the student to meet these goals through a series of graduate courses and seminars, a program of supervised laboratory experience, experience in presentation and discussion of research findings and teaching, and instruction in responsible conduct of research. A supervised research plan will examine several hypotheses related to these goals: 1. whether S-sensitive cones mediate the signals that drive accommodation; 2. whether L-, M- and S- cones drive accommodation by sensing the angle of incidence of light reaching the retina; 3. whether the dioptric vergence signal for accommodation is mediated by motion pathways for color and/or luminance; 4. whether a decentered Stiles-Crawford function for S-cones mediates a directional signal for accommodation, and 5. whether small fixational eye movements contribute to the signal for reflex accommodation.

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Mentored Patient-Oriented Research Career Development Award (K23)
Project #
1K23EY000394-01
Application #
2739173
Study Section
Special Emphasis Panel (ZEY1-VSN (01))
Project Start
1999-02-01
Project End
2004-01-31
Budget Start
1999-02-01
Budget End
2000-01-31
Support Year
1
Fiscal Year
1999
Total Cost
Indirect Cost
Name
State College of Optometry
Department
Ophthalmology
Type
Schools of Optometry/Ophthalmol
DUNS #
152652764
City
New York
State
NY
Country
United States
Zip Code
10036
Rucker, Frances J; Kruger, Philip B (2006) Cone contributions to signals for accommodation and the relationship to refractive error. Vision Res 46:3079-89
Kruger, Philip B; Rucker, Frances J; Hu, Caitlin et al. (2005) Accommodation with and without short-wavelength-sensitive cones and chromatic aberration. Vision Res 45:1265-74
Rucker, Frances J; Kruger, Philip B (2004) The role of short-wavelength sensitive cones and chromatic aberration in the response to stationary and step accommodation stimuli. Vision Res 44:197-208
Rucker, Frances J; Kruger, Philip B (2004) Accommodation responses to stimuli in cone contrast space. Vision Res 44:2931-44
Rucker, F J; Kruger, P B (2001) Isolated short-wavelength sensitive cones can mediate a reflex accommodation response. Vision Res 41:911-22