February 1986
Volume 27, Issue 2
Free
Articles  |   February 1986
The effects of photoperiod and lid suture on eye growth in chickens.
Investigative Ophthalmology & Visual Science February 1986, Vol.27, 255-260. doi:
  • Views
  • PDF
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      G Osol, B Schwartz, D C Foss; The effects of photoperiod and lid suture on eye growth in chickens.. Invest. Ophthalmol. Vis. Sci. 1986;27(2):255-260.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
This content is PDF only. Please click on the PDF icon to access.
Abstract

Three models of postnatal eye enlargement in leghorn chicks (surgical fusion of the eyelids, MES; exposure to continuous light, 24L; prolonged darkness, OL) were characterized on a morphologic and temporal basis, and a relationship between photoperiod and eye growth was described. While pronounced enlargement of the eye was evident in the OL and MES groups after 6 wk, a 15-wk experimental period was necessary to produce significant (P less than 0.05) eye enlargement under 24L. This enlargement was unaffected by pinealectomy and was characterized by increased equatorial diameter and decreased axial length. The macrophthalmos resulting from both MES and OL was characterized by increases in absolute and relative eye weights, axial length, and equatorial diameter. The MES eyes, however, showed a pronounced bulging of the cornea and increased anterior chamber depth and equatorial diameter, while those from the OL group had a flattened cornea and decreased anterior chamber depth. Finally, a relationship between photoperiod and eye growth was established and was best described by an inverse, continuous semilogarithmic function.

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×