Slit Lamp Biomicroscopy
Indirect & Direct Ophthalmoscopy
The indirect ophthalmoscope is a light source attached to a head band which when used with an indirect lens allows the ophthalmologist to examine the lens for opacities or cataracts. This also allows us to examine the retina and optic disc, which is the neurosensory portion of the eye which is responsible for your pet’s vision.
Corneal & Fundic Photography
Ophthalmologists utilize digital cameras, cameras attached to the slit lamp and cameras attached to the indirect ophthalmoscope to provide images for client education and long term patient follow up.
The corneal aesthesiometer measures corneal sensation. There are qualitative measures of corneal sensation (cotton tipped applicator) and quantitative measures (Cochet-Bonnet hand-held Aesthesiometer). The measurement of corneal sensation evaluates the ophthalmic branch of the 5th cranial nerve, also known as the Trigeminal Nerve.
Schirmer Tear Testing
The Schirmer tear test is performed to evaluate tear production of the eye. This test is performed by placing a paper test strip in the underside of the lower eyelid and then measuring the moistened portion of the strip after 1 minute. The moisture will wick along the paper up hash-marks on the paper and give a quantitative value for tear production for the patient.
Tear Film Break-up Time
Tear film Break-up Time (TFBT) testing uses a fluorescein stain-impregnated strip with non-preserved saline solution. The dye is applied to the eye and then the patient's corneal uptake of the dye is evaluated.
The Tono-Pen involves both applanation and indentation processes. The tonometer has an applanating surface with a tiny plunger protruding microscopically from the center. This is applied to the cornea to measure the intraocular pressure for the patient. This is a common way for evaluating uveitis or glaucoma in our patients.
Goniscopy is required to visualize the anterior chamber drainage angle of the eye. Under normal conditions, light from the angle structures (the corners of the eye) undergoes an internal reflection at the front of the eye at the level of the tear-air interface.
Ocular & Orbital Ultrasonography
When the intraocular media is opaque (cataracts, vitreal degeneration, corneal scarring) or the aqueous humor is replaced with blood or inflammatory debris, an ultrasound can be used to form an image of intraocular structures.
After a retinal examination and findings of subretinal hemorrhages in dogs or retinal detachment in cats, a diagnostic blood pressure is necessary to rule out/diagnose systemic hypertension as a cause of the retinal pathology.
Once the ophthalmologist examines your pet, we will determine if they are a candidate for restoration or preservation of vision through cataract removal and artificial lens implantation.
Cataract Phacoemulsification with artificial lens implantation
Corneal Conjunctival Transposition and Conjunctival Grafts
Eyelid tumors are removed based on size and appearance. Simple marginal eyelid tumors < 1 cm in size may be removed through a simple wedge resection or V-plasty type procedure.