51-Title: Evaluation of intraocular pressure in small ruminants

51-Title: Evaluation of intraocular pressure in small ruminants

Authors: Arvinder, Mahendra Tanwar, Sakar Palecha, TK Gahlot, Kapil Kachwaha, Narendra Singh and P Bishnoi

Source: Ruminant Science (2022)-11(2):509-511.

How to cite this manuscript: Arvinder, Tanwar Mahendra, Palecha Sakar, Gahlot TK, Kachwaha Kapil, Singh Narendra and Bishnoi P (2022). Evaluation of intraocular pressure in small ruminants. Ruminant Science 11(2):509-511.


The present study was performed on 20 apparently healthy female adult Magra sheep (n=10) and Marwari goats (n=10) to measure the intraocular pressure (IOP). The mean IOP in eyes of sheep and goats were 8.72±0.25 mmHg and 8.52±0.22 mm Hg, respectively. There was a non-significant difference between left and right eye values of IOP in adult female sheep as well as adult female goats. The difference in IOP between sheep and goats eyes was statistically non-significant.


Beit-Yannai E and Shmulevich A (2007). Does the aqueous humor have a role in mitogen-activated protein kinase (MAPK) intracellular signaling in glaucoma? Medical Hypotheses 68(2):299-302.

Biricik HS, Oðuz H and Kose M (2003). Kuzularda gozyaþý sekresyonunun iplik testi ile klinik olarak deðerlendirilmesi. Fýrat Üniversitesi Saðlýk Bilimleri Dergisi 17:211-215.

Broadwater JJ, Schorling JJ, Herring IP and Pickett JP (2007). Ophthalmic examination findings in adult Pygmy goats (Capra hircus). Veterinary Ophthalmology 10:269-273.

Dugan S (2016). Tonovet (Gold), Tonopen (Silver), Schiotz (Bronze), and Digital Palpation (No Medal Awarded) Tonometry in Veterinary Medicine. Paper presented in CVMA Convention.

Ghaffari MS, Shojaei M, Sabzevari A and Khorami N (2011). Reference values for intraocular pressure and Schirmer tear test in clinically normal Sanjabi sheep. Small Ruminant Research 97:101-103.

Gum GG, Gelatt KN, Miller DN and Mackay EO (1998). Intraocular pressure in normal dairy cattle. Veterinary Ophthalmology 1:159-161.

Isler CT, Altug ME and Kilic S (2013). Evaluation of tear fluid secretion and intraocular pressure in normal Merinos sheep and Saanen goats. Revue de MedecineVeterinaire 164(5):278-282.

Leasure J, Gelatt KN and MacKay EO (2001). The relationship of cataract maturity to intraocular pressure in dogs. Veterinary Ophthalmology 4(4):273-276.

Leiva M, Naranjo C and Pena MT (2006). Comparison of the rebound tonometer (ICare®) to the applanation tonometer (Tonopen XL®) in normotensive dogs. Veterinary Ophthalmology 9(1):17-21.

McLaren JW, Brubaker RF and Fitz Simon JS (1996). Continuous measurement of intraocular pressure in rabbits by telemetry. Investigative Ophthalmology and Visual Science 37(6):966-975.

Ofri R, Horowitz IH and Kass PH (1998). Tonometry in three herbivorous wildlife species. Veterinary Ophthalmology 1(1):21-24.

Pietro SD, Pugliese A, Macciotta L and Pugliese M (2015). Reference values for intraocular pressure and Schirmer tear test in healthy wild European mouflons. Large Animal Review 21:173-176.

Ribeiro AP, Piso DYT, Padua IRM, Silva ML and Laus JL (2010). Intraocular pressure and tear secretion in Saanen goats with different ages. Pesquisa Veterinária Brasileira 30(9):798-802.

Salim S, Linn DJ, Echols II JR and Netland PA (2009). Comparison of intraocular pressure measurements with the portable PT100 noncontact tonometer and Goldmann applanation tonometry. Clinical Ophthalmology 3:341-344.

Slatter (2013). Fundamentals of Veterinary Ophthalmology. 5th Edn, Elsevier Saunders, St. Louis, Missouri, pp 99-100.

Snedecor GW and Cochran WG (1989). Statistical Methods. 7th Edn, Oxford, New Delhi.

Vareilles P, Conquet P and Douarec JCL (1977). A Method for the Routine Intraocular Pressure (IOP) Measurement in the Rabbit: Range of IOP Variations in this Species. Experimental Eye Research 24:369-375.